From 0fcfee0caf908adc6c2ff4711d791b6cef181de9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20=C5=BBak?= <pawel.zak.pawel@gmail.com>
Date: Mon, 23 Nov 2020 16:40:32 +0100
Subject: [PATCH] Fix tests for Windows - part 1 (#8414)

---
 .gitattributes                                |  1 +
 Makefile                                      |  7 +-
 appveyor.yml                                  |  2 +-
 config/config_test.go                         |  3 +-
 config/testdata/telegraf-agent.toml           |  8 --
 internal/globpath/globpath_test.go            | 54 ++++++++-----
 plugins/inputs/bcache/README.md               | 18 ++---
 plugins/inputs/bcache/bcache.go               |  6 +-
 plugins/inputs/bcache/bcache_test.go          |  2 +
 plugins/inputs/bcache/bcache_windows.go       |  3 +
 plugins/inputs/ceph/ceph_test.go              |  8 +-
 plugins/inputs/disk/disk_test.go              | 11 +--
 plugins/inputs/exec/exec_test.go              |  5 ++
 plugins/inputs/execd/execd_test.go            | 11 +--
 plugins/inputs/execd/shim/shim_posix_test.go  |  5 --
 plugins/inputs/file/file_test.go              |  5 ++
 plugins/inputs/filecount/filecount_test.go    |  5 ++
 .../filecount/filesystem_helpers_test.go      |  5 ++
 plugins/inputs/filestat/filestat_test.go      | 78 ++++++++++---------
 plugins/inputs/haproxy/haproxy_test.go        | 11 ++-
 .../http_response/http_response_test.go       | 60 +++++++-------
 plugins/inputs/leofs/leofs_test.go            | 15 +++-
 plugins/inputs/logparser/logparser_test.go    | 74 +++++++++---------
 plugins/inputs/lustre2/lustre2.go             |  6 +-
 plugins/inputs/lustre2/lustre2_test.go        |  2 +
 plugins/inputs/lustre2/lustre2_windows.go     |  3 +
 plugins/inputs/monit/monit_test.go            |  9 +--
 .../inputs/net_response/net_response_test.go  |  1 +
 plugins/inputs/passenger/passenger_test.go    | 51 ++++++++----
 plugins/inputs/phpfpm/phpfpm_test.go          |  5 ++
 plugins/inputs/postfix/postfix.go             |  4 +
 plugins/inputs/postfix/postfix_test.go        |  2 +
 plugins/inputs/postfix/postfix_windows.go     |  3 +
 plugins/inputs/powerdns/powerdns_test.go      | 11 ++-
 .../powerdns_recursor_test.go                 |  4 +-
 plugins/inputs/redfish/redfish_test.go        | 11 ++-
 plugins/inputs/snmp/snmp_test.go              |  4 +-
 .../socket_listener/socket_listener_test.go   |  8 +-
 plugins/inputs/syslog/nontransparent_test.go  |  3 +-
 plugins/inputs/syslog/octetcounting_test.go   |  3 +-
 plugins/inputs/syslog/rfc5426_test.go         | 12 ++-
 plugins/inputs/syslog/syslog.go               |  7 +-
 plugins/inputs/syslog/syslog_test.go          | 19 +++--
 plugins/inputs/tail/tail_test.go              | 53 +++++++------
 plugins/inputs/x509_cert/x509_cert.go         |  4 +
 plugins/inputs/x509_cert/x509_cert_test.go    | 12 ++-
 .../socket_writer/socket_writer_test.go       |  5 ++
 plugins/processors/ifname/ifname_test.go      |  3 +-
 plugins/processors/ifname/ttl_cache.go        | 10 +++
 plugins/processors/reverse_dns/rdnscache.go   |  8 +-
 .../processors/reverse_dns/reversedns_test.go |  9 ++-
 51 files changed, 416 insertions(+), 253 deletions(-)
 create mode 100644 plugins/inputs/bcache/bcache_windows.go
 create mode 100644 plugins/inputs/lustre2/lustre2_windows.go
 create mode 100644 plugins/inputs/postfix/postfix_windows.go

diff --git a/.gitattributes b/.gitattributes
index 21bc439bf..7769daa83 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -3,3 +3,4 @@ README.md merge=union
 go.sum merge=union
 plugins/inputs/all/all.go merge=union
 plugins/outputs/all/all.go merge=union
+**/testdata/** test eol=lf
diff --git a/Makefile b/Makefile
index 44375dbcc..92e947725 100644
--- a/Makefile
+++ b/Makefile
@@ -114,12 +114,7 @@ fmtcheck:
 
 .PHONY: test-windows
 test-windows:
-	go test -short $(race_detector) ./plugins/inputs/ping/...
-	go test -short $(race_detector) ./plugins/inputs/win_perf_counters/...
-	go test -short $(race_detector) ./plugins/inputs/win_services/...
-	go test -short $(race_detector) ./plugins/inputs/procstat/...
-	go test -short $(race_detector) ./plugins/inputs/ntpq/...
-	go test -short $(race_detector) ./plugins/processors/port_name/...
+	go test -short ./...
 
 .PHONY: vet
 vet:
diff --git a/appveyor.yml b/appveyor.yml
index b454c8dc8..6f5f6e948 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,7 +12,7 @@ clone_folder: C:\gopath\src\github.com\influxdata\telegraf
 environment:
   GOPATH: C:\gopath
 
-stack: go 1.14
+stack: go 1.15
 
 platform: x64
 
diff --git a/config/config_test.go b/config/config_test.go
index 5543c60e7..79d74e83b 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -2,6 +2,7 @@ package config
 
 import (
 	"os"
+	"strings"
 	"testing"
 	"time"
 
@@ -201,7 +202,7 @@ func TestConfig_LoadSpecialTypes(t *testing.T) {
 	// Tests telegraf size parsing.
 	assert.Equal(t, internal.Size{Size: 1024 * 1024}, inputHTTPListener.MaxBodySize)
 	// Tests toml multiline basic strings.
-	assert.Equal(t, "/path/to/my/cert\n", inputHTTPListener.TLSCert)
+	assert.Equal(t, "/path/to/my/cert", strings.TrimRight(inputHTTPListener.TLSCert, "\r\n"))
 }
 
 func TestConfig_FieldNotDefined(t *testing.T) {
diff --git a/config/testdata/telegraf-agent.toml b/config/testdata/telegraf-agent.toml
index f71b98206..6967d6e86 100644
--- a/config/testdata/telegraf-agent.toml
+++ b/config/testdata/telegraf-agent.toml
@@ -176,14 +176,6 @@
   # If no servers are specified, then 127.0.0.1 is used as the host and 4020 as the port.
   servers = ["127.0.0.1:4021"]
 
-# Read metrics from local Lustre service on OST, MDS
-[[inputs.lustre2]]
-  # An array of /proc globs to search for Lustre stats
-  # If not specified, the default will work on Lustre 2.5.x
-  #
-  # ost_procfiles = ["/proc/fs/lustre/obdfilter/*/stats", "/proc/fs/lustre/osd-ldiskfs/*/stats"]
-  # mds_procfiles = ["/proc/fs/lustre/mdt/*/md_stats"]
-
 # Read metrics about memory usage
 [[inputs.mem]]
   # no configuration
diff --git a/internal/globpath/globpath_test.go b/internal/globpath/globpath_test.go
index 60562d8f8..92af2d20b 100644
--- a/internal/globpath/globpath_test.go
+++ b/internal/globpath/globpath_test.go
@@ -1,29 +1,38 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package globpath
 
 import (
+	"os"
+	"path/filepath"
 	"runtime"
-	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/require"
 )
 
+var (
+	testdataDir = getTestdataDir()
+)
+
 func TestCompileAndMatch(t *testing.T) {
-	dir := getTestdataDir()
 	// test super asterisk
-	g1, err := Compile(dir + "/**")
+	g1, err := Compile(filepath.Join(testdataDir, "**"))
 	require.NoError(t, err)
 	// test single asterisk
-	g2, err := Compile(dir + "/*.log")
+	g2, err := Compile(filepath.Join(testdataDir, "*.log"))
 	require.NoError(t, err)
 	// test no meta characters (file exists)
-	g3, err := Compile(dir + "/log1.log")
+	g3, err := Compile(filepath.Join(testdataDir, "log1.log"))
 	require.NoError(t, err)
 	// test file that doesn't exist
-	g4, err := Compile(dir + "/i_dont_exist.log")
+	g4, err := Compile(filepath.Join(testdataDir, "i_dont_exist.log"))
 	require.NoError(t, err)
 	// test super asterisk that doesn't exist
-	g5, err := Compile(dir + "/dir_doesnt_exist/**")
+	g5, err := Compile(filepath.Join(testdataDir, "dir_doesnt_exist", "**"))
 	require.NoError(t, err)
 
 	matches := g1.Match()
@@ -39,15 +48,14 @@ func TestCompileAndMatch(t *testing.T) {
 }
 
 func TestRootGlob(t *testing.T) {
-	dir := getTestdataDir()
 	tests := []struct {
 		input  string
 		output string
 	}{
-		{dir + "/**", dir + "/*"},
-		{dir + "/nested?/**", dir + "/nested?/*"},
-		{dir + "/ne**/nest*", dir + "/ne*"},
-		{dir + "/nested?/*", ""},
+		{filepath.Join(testdataDir, "**"), filepath.Join(testdataDir, "*")},
+		{filepath.Join(testdataDir, "nested?", "**"), filepath.Join(testdataDir, "nested?", "*")},
+		{filepath.Join(testdataDir, "ne**", "nest*"), filepath.Join(testdataDir, "ne*")},
+		{filepath.Join(testdataDir, "nested?", "*"), ""},
 	}
 
 	for _, test := range tests {
@@ -57,21 +65,19 @@ func TestRootGlob(t *testing.T) {
 }
 
 func TestFindNestedTextFile(t *testing.T) {
-	dir := getTestdataDir()
 	// test super asterisk
-	g1, err := Compile(dir + "/**.txt")
+	g1, err := Compile(filepath.Join(testdataDir, "**.txt"))
 	require.NoError(t, err)
 
 	matches := g1.Match()
 	require.Len(t, matches, 1)
 }
 
-func getTestdataDir() string {
-	_, filename, _, _ := runtime.Caller(1)
-	return strings.Replace(filename, "globpath_test.go", "testdata", 1)
-}
-
 func TestMatch_ErrPermission(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping Unix only test")
+	}
+
 	tests := []struct {
 		input    string
 		expected []string
@@ -98,3 +104,13 @@ func TestWindowsSeparator(t *testing.T) {
 	ok := glob.MatchString("testdata\\nested1")
 	require.True(t, ok)
 }
+
+func getTestdataDir() string {
+	dir, err := os.Getwd()
+	if err != nil {
+		// if we cannot even establish the test directory, further progress is meaningless
+		panic(err)
+	}
+
+	return filepath.Join(dir, "testdata")
+}
diff --git a/plugins/inputs/bcache/README.md b/plugins/inputs/bcache/README.md
index 11d567ec5..88c9f14f9 100644
--- a/plugins/inputs/bcache/README.md
+++ b/plugins/inputs/bcache/README.md
@@ -56,15 +56,15 @@ cache_readaheads
 Using this configuration:
 
 ```toml
-[bcache]
-  # Bcache sets path
-  # If not specified, then default is:
-  # bcachePath = "/sys/fs/bcache"
-  #
-  # By default, telegraf gather stats for all bcache devices
-  # Setting devices will restrict the stats to the specified
-  # bcache devices.
-  # bcacheDevs = ["bcache0", ...]
+[[inputs.bcache]]
+  ## Bcache sets path
+  ## If not specified, then default is:
+  bcachePath = "/sys/fs/bcache"
+
+  ## By default, Telegraf gather stats for all bcache devices
+  ## Setting devices will restrict the stats to the specified
+  ## bcache devices.
+  bcacheDevs = ["bcache0"]
 ```
 
 When run with:
diff --git a/plugins/inputs/bcache/bcache.go b/plugins/inputs/bcache/bcache.go
index 849e6dd37..c94af73f9 100644
--- a/plugins/inputs/bcache/bcache.go
+++ b/plugins/inputs/bcache/bcache.go
@@ -1,3 +1,7 @@
+// +build !windows
+
+// bcache doesn't aim for Windows
+
 package bcache
 
 import (
@@ -22,7 +26,7 @@ var sampleConfig = `
   ## If not specified, then default is:
   bcachePath = "/sys/fs/bcache"
 
-  ## By default, telegraf gather stats for all bcache devices
+  ## By default, Telegraf gather stats for all bcache devices
   ## Setting devices will restrict the stats to the specified
   ## bcache devices.
   bcacheDevs = ["bcache0"]
diff --git a/plugins/inputs/bcache/bcache_test.go b/plugins/inputs/bcache/bcache_test.go
index bd191528f..4646963c4 100644
--- a/plugins/inputs/bcache/bcache_test.go
+++ b/plugins/inputs/bcache/bcache_test.go
@@ -1,3 +1,5 @@
+// +build !windows
+
 package bcache
 
 import (
diff --git a/plugins/inputs/bcache/bcache_windows.go b/plugins/inputs/bcache/bcache_windows.go
new file mode 100644
index 000000000..9a580cc94
--- /dev/null
+++ b/plugins/inputs/bcache/bcache_windows.go
@@ -0,0 +1,3 @@
+// +build windows
+
+package bcache
diff --git a/plugins/inputs/ceph/ceph_test.go b/plugins/inputs/ceph/ceph_test.go
index 78da3438d..f57cda467 100644
--- a/plugins/inputs/ceph/ceph_test.go
+++ b/plugins/inputs/ceph/ceph_test.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
-	"path"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"testing"
@@ -163,7 +163,7 @@ func assertFoundSocket(t *testing.T, dir, sockType string, i int, sockets []*soc
 	} else {
 		prefix = monPrefix
 	}
-	expected := path.Join(dir, sockFile(prefix, i))
+	expected := filepath.Join(dir, sockFile(prefix, i))
 	found := false
 	for _, s := range sockets {
 		fmt.Printf("Checking %s\n", s.socket)
@@ -183,7 +183,7 @@ func sockFile(prefix string, i int) string {
 func createTestFiles(dir string, st *SockTest) {
 	writeFile := func(prefix string, i int) {
 		f := sockFile(prefix, i)
-		fpath := path.Join(dir, f)
+		fpath := filepath.Join(dir, f)
 		ioutil.WriteFile(fpath, []byte(""), 0777)
 	}
 	tstFileApply(st, writeFile)
@@ -192,7 +192,7 @@ func createTestFiles(dir string, st *SockTest) {
 func cleanupTestFiles(dir string, st *SockTest) {
 	rmFile := func(prefix string, i int) {
 		f := sockFile(prefix, i)
-		fpath := path.Join(dir, f)
+		fpath := filepath.Join(dir, f)
 		err := os.Remove(fpath)
 		if err != nil {
 			fmt.Printf("Error removing test file %s: %v\n", fpath, err)
diff --git a/plugins/inputs/disk/disk_test.go b/plugins/inputs/disk/disk_test.go
index aeb2ae92b..13180fffb 100644
--- a/plugins/inputs/disk/disk_test.go
+++ b/plugins/inputs/disk/disk_test.go
@@ -1,6 +1,7 @@
 package disk
 
 import (
+	"fmt"
 	"os"
 	"testing"
 
@@ -74,13 +75,13 @@ func TestDiskUsage(t *testing.T) {
 	assert.Equal(t, expectedAllDiskMetrics, numDiskMetrics)
 
 	tags1 := map[string]string{
-		"path":   "/",
+		"path":   string(os.PathSeparator),
 		"fstype": "ext4",
 		"device": "sda",
 		"mode":   "ro",
 	}
 	tags2 := map[string]string{
-		"path":   "/home",
+		"path":   fmt.Sprintf("%chome", os.PathSeparator),
 		"fstype": "ext4",
 		"device": "sdb",
 		"mode":   "rw",
@@ -144,7 +145,7 @@ func TestDiskUsageHostMountPrefix(t *testing.T) {
 				},
 			},
 			expectedTags: map[string]string{
-				"path":   "/",
+				"path":   string(os.PathSeparator),
 				"device": "sda",
 				"fstype": "ext4",
 				"mode":   "ro",
@@ -177,7 +178,7 @@ func TestDiskUsageHostMountPrefix(t *testing.T) {
 			},
 			hostMountPrefix: "/hostfs",
 			expectedTags: map[string]string{
-				"path":   "/var",
+				"path":   fmt.Sprintf("%cvar", os.PathSeparator),
 				"device": "sda",
 				"fstype": "ext4",
 				"mode":   "ro",
@@ -210,7 +211,7 @@ func TestDiskUsageHostMountPrefix(t *testing.T) {
 			},
 			hostMountPrefix: "/hostfs",
 			expectedTags: map[string]string{
-				"path":   "/",
+				"path":   string(os.PathSeparator),
 				"device": "sda",
 				"fstype": "ext4",
 				"mode":   "ro",
diff --git a/plugins/inputs/exec/exec_test.go b/plugins/inputs/exec/exec_test.go
index d0fcc71f6..38503a7c0 100644
--- a/plugins/inputs/exec/exec_test.go
+++ b/plugins/inputs/exec/exec_test.go
@@ -1,3 +1,8 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package exec
 
 import (
diff --git a/plugins/inputs/execd/execd_test.go b/plugins/inputs/execd/execd_test.go
index a7be617da..6cb254eb5 100644
--- a/plugins/inputs/execd/execd_test.go
+++ b/plugins/inputs/execd/execd_test.go
@@ -1,5 +1,3 @@
-// +build !windows
-
 package execd
 
 import (
@@ -11,17 +9,16 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/agent"
 	"github.com/influxdata/telegraf/config"
 	"github.com/influxdata/telegraf/metric"
 	"github.com/influxdata/telegraf/models"
-	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
-
 	"github.com/influxdata/telegraf/plugins/parsers"
 	"github.com/influxdata/telegraf/plugins/serializers"
-
-	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/testutil"
 )
 
 func TestSettingConfigWorks(t *testing.T) {
diff --git a/plugins/inputs/execd/shim/shim_posix_test.go b/plugins/inputs/execd/shim/shim_posix_test.go
index 873ef89bf..594985d23 100644
--- a/plugins/inputs/execd/shim/shim_posix_test.go
+++ b/plugins/inputs/execd/shim/shim_posix_test.go
@@ -7,7 +7,6 @@ import (
 	"context"
 	"io"
 	"os"
-	"runtime"
 	"syscall"
 	"testing"
 	"time"
@@ -16,10 +15,6 @@ import (
 )
 
 func TestShimUSR1SignalingWorks(t *testing.T) {
-	if runtime.GOOS == "windows" {
-		t.Skip()
-		return
-	}
 	stdinReader, stdinWriter := io.Pipe()
 	stdoutReader, stdoutWriter := io.Pipe()
 
diff --git a/plugins/inputs/file/file_test.go b/plugins/inputs/file/file_test.go
index 427ff25d8..a5cacec21 100644
--- a/plugins/inputs/file/file_test.go
+++ b/plugins/inputs/file/file_test.go
@@ -1,3 +1,8 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package file
 
 import (
diff --git a/plugins/inputs/filecount/filecount_test.go b/plugins/inputs/filecount/filecount_test.go
index 568ee07b5..39bbafb36 100644
--- a/plugins/inputs/filecount/filecount_test.go
+++ b/plugins/inputs/filecount/filecount_test.go
@@ -1,3 +1,8 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package filecount
 
 import (
diff --git a/plugins/inputs/filecount/filesystem_helpers_test.go b/plugins/inputs/filecount/filesystem_helpers_test.go
index 08bb15a2e..62e7e2f81 100644
--- a/plugins/inputs/filecount/filesystem_helpers_test.go
+++ b/plugins/inputs/filecount/filesystem_helpers_test.go
@@ -1,3 +1,8 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package filecount
 
 import (
diff --git a/plugins/inputs/filestat/filestat_test.go b/plugins/inputs/filestat/filestat_test.go
index a38d3b0aa..79a111ffb 100644
--- a/plugins/inputs/filestat/filestat_test.go
+++ b/plugins/inputs/filestat/filestat_test.go
@@ -1,102 +1,108 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package filestat
 
 import (
-	"runtime"
-	"strings"
+	"os"
+	"path/filepath"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/assert"
+)
+
+var (
+	testdataDir = getTestdataDir()
 )
 
 func TestGatherNoMd5(t *testing.T) {
-	dir := getTestdataDir()
 	fs := NewFileStat()
 	fs.Log = testutil.Logger{}
 	fs.Files = []string{
-		dir + "log1.log",
-		dir + "log2.log",
-		"/non/existant/file",
+		filepath.Join(testdataDir, "log1.log"),
+		filepath.Join(testdataDir, "log2.log"),
+		filepath.Join(testdataDir, "non_existent_file"),
 	}
 
 	acc := testutil.Accumulator{}
 	acc.GatherError(fs.Gather)
 
 	tags1 := map[string]string{
-		"file": dir + "log1.log",
+		"file": filepath.Join(testdataDir, "log1.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags1, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags1, "exists", int64(1)))
 
 	tags2 := map[string]string{
-		"file": dir + "log2.log",
+		"file": filepath.Join(testdataDir, "log2.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags2, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags2, "exists", int64(1)))
 
 	tags3 := map[string]string{
-		"file": "/non/existant/file",
+		"file": filepath.Join(testdataDir, "non_existent_file"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags3, "exists", int64(0)))
 }
 
 func TestGatherExplicitFiles(t *testing.T) {
-	dir := getTestdataDir()
 	fs := NewFileStat()
 	fs.Log = testutil.Logger{}
 	fs.Md5 = true
 	fs.Files = []string{
-		dir + "log1.log",
-		dir + "log2.log",
-		"/non/existant/file",
+		filepath.Join(testdataDir, "log1.log"),
+		filepath.Join(testdataDir, "log2.log"),
+		filepath.Join(testdataDir, "non_existent_file"),
 	}
 
 	acc := testutil.Accumulator{}
 	acc.GatherError(fs.Gather)
 
 	tags1 := map[string]string{
-		"file": dir + "log1.log",
+		"file": filepath.Join(testdataDir, "log1.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags1, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags1, "exists", int64(1)))
 	require.True(t, acc.HasPoint("filestat", tags1, "md5_sum", "d41d8cd98f00b204e9800998ecf8427e"))
 
 	tags2 := map[string]string{
-		"file": dir + "log2.log",
+		"file": filepath.Join(testdataDir, "log2.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags2, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags2, "exists", int64(1)))
 	require.True(t, acc.HasPoint("filestat", tags2, "md5_sum", "d41d8cd98f00b204e9800998ecf8427e"))
 
 	tags3 := map[string]string{
-		"file": "/non/existant/file",
+		"file": filepath.Join(testdataDir, "non_existent_file"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags3, "exists", int64(0)))
 }
 
 func TestGatherGlob(t *testing.T) {
-	dir := getTestdataDir()
 	fs := NewFileStat()
 	fs.Log = testutil.Logger{}
 	fs.Md5 = true
 	fs.Files = []string{
-		dir + "*.log",
+		filepath.Join(testdataDir, "*.log"),
 	}
 
 	acc := testutil.Accumulator{}
 	acc.GatherError(fs.Gather)
 
 	tags1 := map[string]string{
-		"file": dir + "log1.log",
+		"file": filepath.Join(testdataDir, "log1.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags1, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags1, "exists", int64(1)))
 	require.True(t, acc.HasPoint("filestat", tags1, "md5_sum", "d41d8cd98f00b204e9800998ecf8427e"))
 
 	tags2 := map[string]string{
-		"file": dir + "log2.log",
+		"file": filepath.Join(testdataDir, "log2.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags2, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags2, "exists", int64(1)))
@@ -104,33 +110,32 @@ func TestGatherGlob(t *testing.T) {
 }
 
 func TestGatherSuperAsterisk(t *testing.T) {
-	dir := getTestdataDir()
 	fs := NewFileStat()
 	fs.Log = testutil.Logger{}
 	fs.Md5 = true
 	fs.Files = []string{
-		dir + "**",
+		filepath.Join(testdataDir, "**"),
 	}
 
 	acc := testutil.Accumulator{}
 	acc.GatherError(fs.Gather)
 
 	tags1 := map[string]string{
-		"file": dir + "log1.log",
+		"file": filepath.Join(testdataDir, "log1.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags1, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags1, "exists", int64(1)))
 	require.True(t, acc.HasPoint("filestat", tags1, "md5_sum", "d41d8cd98f00b204e9800998ecf8427e"))
 
 	tags2 := map[string]string{
-		"file": dir + "log2.log",
+		"file": filepath.Join(testdataDir, "log2.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags2, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags2, "exists", int64(1)))
 	require.True(t, acc.HasPoint("filestat", tags2, "md5_sum", "d41d8cd98f00b204e9800998ecf8427e"))
 
 	tags3 := map[string]string{
-		"file": dir + "test.conf",
+		"file": filepath.Join(testdataDir, "test.conf"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags3, "size_bytes", int64(104)))
 	require.True(t, acc.HasPoint("filestat", tags3, "exists", int64(1)))
@@ -138,18 +143,17 @@ func TestGatherSuperAsterisk(t *testing.T) {
 }
 
 func TestModificationTime(t *testing.T) {
-	dir := getTestdataDir()
 	fs := NewFileStat()
 	fs.Log = testutil.Logger{}
 	fs.Files = []string{
-		dir + "log1.log",
+		filepath.Join(testdataDir, "log1.log"),
 	}
 
 	acc := testutil.Accumulator{}
 	acc.GatherError(fs.Gather)
 
 	tags1 := map[string]string{
-		"file": dir + "log1.log",
+		"file": filepath.Join(testdataDir, "log1.log"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags1, "size_bytes", int64(0)))
 	require.True(t, acc.HasPoint("filestat", tags1, "exists", int64(1)))
@@ -160,22 +164,21 @@ func TestNoModificationTime(t *testing.T) {
 	fs := NewFileStat()
 	fs.Log = testutil.Logger{}
 	fs.Files = []string{
-		"/non/existant/file",
+		filepath.Join(testdataDir, "non_existent_file"),
 	}
 
 	acc := testutil.Accumulator{}
 	acc.GatherError(fs.Gather)
 
 	tags1 := map[string]string{
-		"file": "/non/existant/file",
+		"file": filepath.Join(testdataDir, "non_existent_file"),
 	}
 	require.True(t, acc.HasPoint("filestat", tags1, "exists", int64(0)))
 	require.False(t, acc.HasInt64Field("filestat", "modification_time"))
 }
 
 func TestGetMd5(t *testing.T) {
-	dir := getTestdataDir()
-	md5, err := getMd5(dir + "test.conf")
+	md5, err := getMd5(filepath.Join(testdataDir, "test.conf"))
 	assert.NoError(t, err)
 	assert.Equal(t, "5a7e9b77fa25e7bb411dbd17cf403c1f", md5)
 
@@ -184,6 +187,11 @@ func TestGetMd5(t *testing.T) {
 }
 
 func getTestdataDir() string {
-	_, filename, _, _ := runtime.Caller(1)
-	return strings.Replace(filename, "filestat_test.go", "testdata/", 1)
+	dir, err := os.Getwd()
+	if err != nil {
+		// if we cannot even establish the test directory, further progress is meaningless
+		panic(err)
+	}
+
+	return filepath.Join(dir, "testdata")
 }
diff --git a/plugins/inputs/haproxy/haproxy_test.go b/plugins/inputs/haproxy/haproxy_test.go
index e05031f19..0a360c351 100644
--- a/plugins/inputs/haproxy/haproxy_test.go
+++ b/plugins/inputs/haproxy/haproxy_test.go
@@ -7,6 +7,8 @@ import (
 	"net"
 	"net/http"
 	"net/http/httptest"
+	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 
@@ -114,12 +116,13 @@ func TestHaproxyGeneratesMetricsWithoutAuthentication(t *testing.T) {
 func TestHaproxyGeneratesMetricsUsingSocket(t *testing.T) {
 	var randomNumber int64
 	var sockets [5]net.Listener
-	_globmask := "/tmp/test-haproxy*.sock"
-	_badmask := "/tmp/test-fail-haproxy*.sock"
+
+	_globmask := filepath.Join(os.TempDir(), "test-haproxy*.sock")
+	_badmask := filepath.Join(os.TempDir(), "test-fail-haproxy*.sock")
 
 	for i := 0; i < 5; i++ {
 		binary.Read(rand.Reader, binary.LittleEndian, &randomNumber)
-		sockname := fmt.Sprintf("/tmp/test-haproxy%d.sock", randomNumber)
+		sockname := filepath.Join(os.TempDir(), fmt.Sprintf("test-haproxy%d.sock", randomNumber))
 
 		sock, err := net.Listen("unix", sockname)
 		if err != nil {
@@ -146,7 +149,7 @@ func TestHaproxyGeneratesMetricsUsingSocket(t *testing.T) {
 
 	for _, sock := range sockets {
 		tags := map[string]string{
-			"server": sock.Addr().String(),
+			"server": getSocketAddr(sock.Addr().String()),
 			"proxy":  "git",
 			"sv":     "www",
 			"type":   "server",
diff --git a/plugins/inputs/http_response/http_response_test.go b/plugins/inputs/http_response/http_response_test.go
index adf4e7999..3c290c153 100644
--- a/plugins/inputs/http_response/http_response_test.go
+++ b/plugins/inputs/http_response/http_response_test.go
@@ -1,3 +1,7 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when https://github.com/influxdata/telegraf/issues/8451 is fixed
+
 package http_response
 
 import (
@@ -162,7 +166,7 @@ func TestHeaders(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL,
+		URLs:            []string{ts.URL},
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 2},
 		Headers: map[string]string{
@@ -198,7 +202,7 @@ func TestFields(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/good",
+		URLs:            []string{ts.URL + "/good"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -236,7 +240,7 @@ func TestResponseBodyField(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/good",
+		URLs:            []string{ts.URL + "/good"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -271,7 +275,7 @@ func TestResponseBodyField(t *testing.T) {
 	// Invalid UTF-8 String
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/invalidUTF8",
+		URLs:            []string{ts.URL + "/invalidUTF8"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -305,7 +309,7 @@ func TestResponseBodyMaxSize(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/good",
+		URLs:            []string{ts.URL + "/good"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -339,7 +343,7 @@ func TestHTTPHeaderTags(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/good",
+		URLs:            []string{ts.URL + "/good"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -374,7 +378,7 @@ func TestHTTPHeaderTags(t *testing.T) {
 
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/noheader",
+		URLs:            []string{ts.URL + "/noheader"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -400,7 +404,7 @@ func TestHTTPHeaderTags(t *testing.T) {
 	// Connection failed
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         "https:/nonexistent.nonexistent", // Any non-routable IP works here
+		URLs:            []string{"https:/nonexistent.nonexistent"}, // Any non-routable IP works here
 		Body:            "",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 5},
@@ -456,7 +460,7 @@ func TestInterface(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/good",
+		URLs:            []string{ts.URL + "/good"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -495,7 +499,7 @@ func TestRedirects(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/redirect",
+		URLs:            []string{ts.URL + "/redirect"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -526,7 +530,7 @@ func TestRedirects(t *testing.T) {
 
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/badredirect",
+		URLs:            []string{ts.URL + "/badredirect"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -563,7 +567,7 @@ func TestMethod(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/mustbepostmethod",
+		URLs:            []string{ts.URL + "/mustbepostmethod"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "POST",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -594,7 +598,7 @@ func TestMethod(t *testing.T) {
 
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/mustbepostmethod",
+		URLs:            []string{ts.URL + "/mustbepostmethod"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -626,7 +630,7 @@ func TestMethod(t *testing.T) {
 	//check that lowercase methods work correctly
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/mustbepostmethod",
+		URLs:            []string{ts.URL + "/mustbepostmethod"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "head",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -663,7 +667,7 @@ func TestBody(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/musthaveabody",
+		URLs:            []string{ts.URL + "/musthaveabody"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -694,7 +698,7 @@ func TestBody(t *testing.T) {
 
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/musthaveabody",
+		URLs:            []string{ts.URL + "/musthaveabody"},
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
 		Headers: map[string]string{
@@ -728,7 +732,7 @@ func TestStringMatch(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                 testutil.Logger{},
-		Address:             ts.URL + "/good",
+		URLs:                []string{ts.URL + "/good"},
 		Body:                "{ 'test': 'data'}",
 		Method:              "GET",
 		ResponseStringMatch: "hit the good page",
@@ -766,7 +770,7 @@ func TestStringMatchJson(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                 testutil.Logger{},
-		Address:             ts.URL + "/jsonresponse",
+		URLs:                []string{ts.URL + "/jsonresponse"},
 		Body:                "{ 'test': 'data'}",
 		Method:              "GET",
 		ResponseStringMatch: "\"service_status\": \"up\"",
@@ -804,7 +808,7 @@ func TestStringMatchFail(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                 testutil.Logger{},
-		Address:             ts.URL + "/good",
+		URLs:                []string{ts.URL + "/good"},
 		Body:                "{ 'test': 'data'}",
 		Method:              "GET",
 		ResponseStringMatch: "hit the bad page",
@@ -847,7 +851,7 @@ func TestTimeout(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/twosecondnap",
+		URLs:            []string{ts.URL + "/twosecondnap"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second},
@@ -881,7 +885,7 @@ func TestBadRegex(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                 testutil.Logger{},
-		Address:             ts.URL + "/good",
+		URLs:                []string{ts.URL + "/good"},
 		Body:                "{ 'test': 'data'}",
 		Method:              "GET",
 		ResponseStringMatch: "bad regex:[[",
@@ -905,7 +909,7 @@ func TestNetworkErrors(t *testing.T) {
 	// DNS error
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         "https://nonexistent.nonexistent", // Any non-resolvable URL works here
+		URLs:            []string{"https://nonexistent.nonexistent"}, // Any non-resolvable URL works here
 		Body:            "",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -932,7 +936,7 @@ func TestNetworkErrors(t *testing.T) {
 	// Connection failed
 	h = &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         "https:/nonexistent.nonexistent", // Any non-routable IP works here
+		URLs:            []string{"https:/nonexistent.nonexistent"}, // Any non-routable IP works here
 		Body:            "",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 5},
@@ -1082,7 +1086,7 @@ func TestBasicAuth(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:             testutil.Logger{},
-		Address:         ts.URL + "/good",
+		URLs:            []string{ts.URL + "/good"},
 		Body:            "{ 'test': 'data'}",
 		Method:          "GET",
 		ResponseTimeout: internal.Duration{Duration: time.Second * 20},
@@ -1121,7 +1125,7 @@ func TestStatusCodeMatchFail(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                testutil.Logger{},
-		Address:            ts.URL + "/nocontent",
+		URLs:               []string{ts.URL + "/nocontent"},
 		ResponseStatusCode: http.StatusOK,
 		ResponseTimeout:    internal.Duration{Duration: time.Second * 20},
 	}
@@ -1154,7 +1158,7 @@ func TestStatusCodeMatch(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                testutil.Logger{},
-		Address:            ts.URL + "/nocontent",
+		URLs:               []string{ts.URL + "/nocontent"},
 		ResponseStatusCode: http.StatusNoContent,
 		ResponseTimeout:    internal.Duration{Duration: time.Second * 20},
 	}
@@ -1187,7 +1191,7 @@ func TestStatusCodeAndStringMatch(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                 testutil.Logger{},
-		Address:             ts.URL + "/good",
+		URLs:                []string{ts.URL + "/good"},
 		ResponseStatusCode:  http.StatusOK,
 		ResponseStringMatch: "hit the good page",
 		ResponseTimeout:     internal.Duration{Duration: time.Second * 20},
@@ -1222,7 +1226,7 @@ func TestStatusCodeAndStringMatchFail(t *testing.T) {
 
 	h := &HTTPResponse{
 		Log:                 testutil.Logger{},
-		Address:             ts.URL + "/nocontent",
+		URLs:                []string{ts.URL + "/nocontent"},
 		ResponseStatusCode:  http.StatusOK,
 		ResponseStringMatch: "hit the good page",
 		ResponseTimeout:     internal.Duration{Duration: time.Second * 20},
diff --git a/plugins/inputs/leofs/leofs_test.go b/plugins/inputs/leofs/leofs_test.go
index f456a998e..6d7799d0b 100644
--- a/plugins/inputs/leofs/leofs_test.go
+++ b/plugins/inputs/leofs/leofs_test.go
@@ -8,6 +8,7 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"runtime"
 	"testing"
 )
 
@@ -133,19 +134,25 @@ func makeFakeSNMPSrc(code string) string {
 	return path
 }
 
-func buildFakeSNMPCmd(src string) {
-	err := exec.Command("go", "build", "-o", "snmpwalk", src).Run()
+func buildFakeSNMPCmd(src string, executable string) {
+	err := exec.Command("go", "build", "-o", executable, src).Run()
 	if err != nil {
 		log.Fatalln(err)
 	}
 }
 
 func testMain(t *testing.T, code string, endpoint string, serverType ServerType) {
+	executable := "snmpwalk"
+	if runtime.GOOS == "windows" {
+		executable = "snmpwalk.exe"
+	}
+
 	// Build the fake snmpwalk for test
 	src := makeFakeSNMPSrc(code)
 	defer os.Remove(src)
-	buildFakeSNMPCmd(src)
-	defer os.Remove("./snmpwalk")
+	buildFakeSNMPCmd(src, executable)
+	defer os.Remove("./" + executable)
+
 	envPathOrigin := os.Getenv("PATH")
 	// Refer to the fake snmpwalk
 	os.Setenv("PATH", ".")
diff --git a/plugins/inputs/logparser/logparser_test.go b/plugins/inputs/logparser/logparser_test.go
index 142f78d46..9bf4f125a 100644
--- a/plugins/inputs/logparser/logparser_test.go
+++ b/plugins/inputs/logparser/logparser_test.go
@@ -3,22 +3,26 @@ package logparser
 import (
 	"io/ioutil"
 	"os"
-	"runtime"
-	"strings"
+	"path/filepath"
 	"testing"
 	"time"
 
-	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/testutil"
+)
+
+var (
+	testdataDir = getTestdataDir()
 )
 
 func TestStartNoParsers(t *testing.T) {
 	logparser := &LogParserPlugin{
 		Log:           testutil.Logger{},
 		FromBeginning: true,
-		Files:         []string{"testdata/*.log"},
+		Files:         []string{filepath.Join(testdataDir, "*.log")},
 	}
 
 	acc := testutil.Accumulator{}
@@ -26,15 +30,13 @@ func TestStartNoParsers(t *testing.T) {
 }
 
 func TestGrokParseLogFilesNonExistPattern(t *testing.T) {
-	thisdir := getCurrentDir()
-
 	logparser := &LogParserPlugin{
 		Log:           testutil.Logger{},
 		FromBeginning: true,
-		Files:         []string{thisdir + "testdata/*.log"},
+		Files:         []string{filepath.Join(testdataDir, "*.log")},
 		GrokConfig: GrokConfig{
 			Patterns:           []string{"%{FOOBAR}"},
-			CustomPatternFiles: []string{thisdir + "testdata/test-patterns"},
+			CustomPatternFiles: []string{filepath.Join(testdataDir, "test-patterns")},
 		},
 	}
 
@@ -44,17 +46,15 @@ func TestGrokParseLogFilesNonExistPattern(t *testing.T) {
 }
 
 func TestGrokParseLogFiles(t *testing.T) {
-	thisdir := getCurrentDir()
-
 	logparser := &LogParserPlugin{
 		Log: testutil.Logger{},
 		GrokConfig: GrokConfig{
 			MeasurementName:    "logparser_grok",
 			Patterns:           []string{"%{TEST_LOG_A}", "%{TEST_LOG_B}", "%{TEST_LOG_C}"},
-			CustomPatternFiles: []string{thisdir + "testdata/test-patterns"},
+			CustomPatternFiles: []string{filepath.Join(testdataDir, "test-patterns")},
 		},
 		FromBeginning: true,
-		Files:         []string{thisdir + "testdata/*.log"},
+		Files:         []string{filepath.Join(testdataDir, "*.log")},
 	}
 
 	acc := testutil.Accumulator{}
@@ -68,7 +68,7 @@ func TestGrokParseLogFiles(t *testing.T) {
 			"logparser_grok",
 			map[string]string{
 				"response_code": "200",
-				"path":          thisdir + "testdata/test_a.log",
+				"path":          filepath.Join(testdataDir, "test_a.log"),
 			},
 			map[string]interface{}{
 				"clientip":      "192.168.1.1",
@@ -81,7 +81,7 @@ func TestGrokParseLogFiles(t *testing.T) {
 		testutil.MustMetric(
 			"logparser_grok",
 			map[string]string{
-				"path": thisdir + "testdata/test_b.log",
+				"path": filepath.Join(testdataDir, "test_b.log"),
 			},
 			map[string]interface{}{
 				"myfloat":    1.25,
@@ -93,7 +93,7 @@ func TestGrokParseLogFiles(t *testing.T) {
 		testutil.MustMetric(
 			"logparser_grok",
 			map[string]string{
-				"path":          thisdir + "testdata/test_c.log",
+				"path":          filepath.Join(testdataDir, "test_c.log"),
 				"response_code": "200",
 			},
 			map[string]interface{}{
@@ -115,16 +115,14 @@ func TestGrokParseLogFilesAppearLater(t *testing.T) {
 	defer os.RemoveAll(emptydir)
 	assert.NoError(t, err)
 
-	thisdir := getCurrentDir()
-
 	logparser := &LogParserPlugin{
 		Log:           testutil.Logger{},
 		FromBeginning: true,
-		Files:         []string{emptydir + "/*.log"},
+		Files:         []string{filepath.Join(emptydir, "*.log")},
 		GrokConfig: GrokConfig{
 			MeasurementName:    "logparser_grok",
 			Patterns:           []string{"%{TEST_LOG_A}", "%{TEST_LOG_B}"},
-			CustomPatternFiles: []string{thisdir + "testdata/test-patterns"},
+			CustomPatternFiles: []string{filepath.Join(testdataDir, "test-patterns")},
 		},
 	}
 
@@ -133,7 +131,12 @@ func TestGrokParseLogFilesAppearLater(t *testing.T) {
 
 	assert.Equal(t, acc.NFields(), 0)
 
-	_ = os.Symlink(thisdir+"testdata/test_a.log", emptydir+"/test_a.log")
+	input, err := ioutil.ReadFile(filepath.Join(testdataDir, "test_a.log"))
+	assert.NoError(t, err)
+
+	err = ioutil.WriteFile(filepath.Join(emptydir, "test_a.log"), input, 0644)
+	assert.NoError(t, err)
+
 	assert.NoError(t, acc.GatherError(logparser.Gather))
 	acc.Wait(1)
 
@@ -148,23 +151,21 @@ func TestGrokParseLogFilesAppearLater(t *testing.T) {
 		},
 		map[string]string{
 			"response_code": "200",
-			"path":          emptydir + "/test_a.log",
+			"path":          filepath.Join(emptydir, "test_a.log"),
 		})
 }
 
 // Test that test_a.log line gets parsed even though we don't have the correct
 // pattern available for test_b.log
 func TestGrokParseLogFilesOneBad(t *testing.T) {
-	thisdir := getCurrentDir()
-
 	logparser := &LogParserPlugin{
 		Log:           testutil.Logger{},
 		FromBeginning: true,
-		Files:         []string{thisdir + "testdata/test_a.log"},
+		Files:         []string{filepath.Join(testdataDir, "test_a.log")},
 		GrokConfig: GrokConfig{
 			MeasurementName:    "logparser_grok",
 			Patterns:           []string{"%{TEST_LOG_A}", "%{TEST_LOG_BAD}"},
-			CustomPatternFiles: []string{thisdir + "testdata/test-patterns"},
+			CustomPatternFiles: []string{filepath.Join(testdataDir, "test-patterns")},
 		},
 	}
 
@@ -184,22 +185,20 @@ func TestGrokParseLogFilesOneBad(t *testing.T) {
 		},
 		map[string]string{
 			"response_code": "200",
-			"path":          thisdir + "testdata/test_a.log",
+			"path":          filepath.Join(testdataDir, "test_a.log"),
 		})
 }
 
 func TestGrokParseLogFiles_TimestampInEpochMilli(t *testing.T) {
-	thisdir := getCurrentDir()
-
 	logparser := &LogParserPlugin{
 		Log: testutil.Logger{},
 		GrokConfig: GrokConfig{
 			MeasurementName:    "logparser_grok",
 			Patterns:           []string{"%{TEST_LOG_C}"},
-			CustomPatternFiles: []string{thisdir + "testdata/test-patterns"},
+			CustomPatternFiles: []string{filepath.Join(testdataDir, "test-patterns")},
 		},
 		FromBeginning: true,
-		Files:         []string{thisdir + "testdata/test_c.log"},
+		Files:         []string{filepath.Join(testdataDir, "test_c.log")},
 	}
 
 	acc := testutil.Accumulator{}
@@ -218,11 +217,16 @@ func TestGrokParseLogFiles_TimestampInEpochMilli(t *testing.T) {
 		},
 		map[string]string{
 			"response_code": "200",
-			"path":          thisdir + "testdata/test_c.log",
+			"path":          filepath.Join(testdataDir, "test_c.log"),
 		})
 }
 
-func getCurrentDir() string {
-	_, filename, _, _ := runtime.Caller(1)
-	return strings.Replace(filename, "logparser_test.go", "", 1)
+func getTestdataDir() string {
+	dir, err := os.Getwd()
+	if err != nil {
+		// if we cannot even establish the test directory, further progress is meaningless
+		panic(err)
+	}
+
+	return filepath.Join(dir, "testdata")
 }
diff --git a/plugins/inputs/lustre2/lustre2.go b/plugins/inputs/lustre2/lustre2.go
index 611ba294d..44e046c73 100644
--- a/plugins/inputs/lustre2/lustre2.go
+++ b/plugins/inputs/lustre2/lustre2.go
@@ -1,5 +1,9 @@
+// +build !windows
+
+// lustre2 doesn't aim for Windows
+
 /*
-Lustre 2.x telegraf plugin
+Lustre 2.x Telegraf plugin
 
 Lustre (http://lustre.org/) is an open-source, parallel file system
 for HPC environments. It stores statistics about its activity in
diff --git a/plugins/inputs/lustre2/lustre2_test.go b/plugins/inputs/lustre2/lustre2_test.go
index 8e93da8e8..1fb55d304 100644
--- a/plugins/inputs/lustre2/lustre2_test.go
+++ b/plugins/inputs/lustre2/lustre2_test.go
@@ -1,3 +1,5 @@
+// +build !windows
+
 package lustre2
 
 import (
diff --git a/plugins/inputs/lustre2/lustre2_windows.go b/plugins/inputs/lustre2/lustre2_windows.go
new file mode 100644
index 000000000..0c4d97060
--- /dev/null
+++ b/plugins/inputs/lustre2/lustre2_windows.go
@@ -0,0 +1,3 @@
+// +build windows
+
+package lustre2
diff --git a/plugins/inputs/monit/monit_test.go b/plugins/inputs/monit/monit_test.go
index 2739240f1..d17db8d2a 100644
--- a/plugins/inputs/monit/monit_test.go
+++ b/plugins/inputs/monit/monit_test.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"net/http"
 	"net/http/httptest"
+	"net/url"
 	"testing"
 	"time"
 
@@ -573,21 +574,19 @@ func TestAllowHosts(t *testing.T) {
 }
 
 func TestConnection(t *testing.T) {
-
 	r := &Monit{
 		Address:  "http://127.0.0.1:2812",
 		Username: "test",
 		Password: "test",
 	}
 
-	var acc testutil.Accumulator
-
 	r.Init()
 
+	var acc testutil.Accumulator
 	err := r.Gather(&acc)
-
 	if assert.Error(t, err) {
-		assert.Contains(t, err.Error(), "connect: connection refused")
+		_, ok := err.(*url.Error)
+		assert.True(t, ok)
 	}
 }
 
diff --git a/plugins/inputs/net_response/net_response_test.go b/plugins/inputs/net_response/net_response_test.go
index ef4d0714a..8f01d6879 100644
--- a/plugins/inputs/net_response/net_response_test.go
+++ b/plugins/inputs/net_response/net_response_test.go
@@ -91,6 +91,7 @@ func TestTCPError(t *testing.T) {
 	c := NetResponse{
 		Protocol: "tcp",
 		Address:  ":9999",
+		Timeout:  internal.Duration{Duration: time.Second * 30},
 	}
 	// Error
 	err1 := c.Gather(&acc)
diff --git a/plugins/inputs/passenger/passenger_test.go b/plugins/inputs/passenger/passenger_test.go
index c54239d39..ce1ebe462 100644
--- a/plugins/inputs/passenger/passenger_test.go
+++ b/plugins/inputs/passenger/passenger_test.go
@@ -4,20 +4,37 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
 	"testing"
 
-	"github.com/influxdata/telegraf/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/testutil"
 )
 
-func fakePassengerStatus(stat string) {
-	content := fmt.Sprintf("#!/bin/sh\ncat << EOF\n%s\nEOF", stat)
-	ioutil.WriteFile("/tmp/passenger-status", []byte(content), 0700)
+func fakePassengerStatus(stat string) string {
+	var fileExtension, content string
+	if runtime.GOOS == "windows" {
+		fileExtension = ".bat"
+		content = "@echo off\n"
+		for _, line := range strings.Split(strings.TrimSuffix(stat, "\n"), "\n") {
+			content += "for /f \"delims=\" %%A in (\"" + line + "\") do echo %%~A\n" //my eyes are bleeding
+		}
+	} else {
+		content = fmt.Sprintf("#!/bin/sh\ncat << EOF\n%s\nEOF", stat)
+	}
+
+	tempFilePath := filepath.Join(os.TempDir(), "passenger-status"+fileExtension)
+	ioutil.WriteFile(tempFilePath, []byte(content), 0700)
+
+	return tempFilePath
 }
 
-func teardown() {
-	os.Remove("/tmp/passenger-status")
+func teardown(tempFilePath string) {
+	os.Remove(tempFilePath)
 }
 
 func Test_Invalid_Passenger_Status_Cli(t *testing.T) {
@@ -29,28 +46,28 @@ func Test_Invalid_Passenger_Status_Cli(t *testing.T) {
 
 	err := r.Gather(&acc)
 	require.Error(t, err)
-	assert.Equal(t, err.Error(), `exec: "an-invalid-command": executable file not found in $PATH`)
+	assert.Contains(t, err.Error(), `exec: "an-invalid-command": executable file not found in `)
 }
 
 func Test_Invalid_Xml(t *testing.T) {
-	fakePassengerStatus("invalid xml")
-	defer teardown()
+	tempFilePath := fakePassengerStatus("invalid xml")
+	defer teardown(tempFilePath)
 
 	r := &passenger{
-		Command: "/tmp/passenger-status",
+		Command: tempFilePath,
 	}
 
 	var acc testutil.Accumulator
 
 	err := r.Gather(&acc)
 	require.Error(t, err)
-	assert.Equal(t, err.Error(), "Cannot parse input with error: EOF\n")
+	assert.Equal(t, "Cannot parse input with error: EOF\n", err.Error())
 }
 
 // We test this by ensure that the error message match the path of default cli
 func Test_Default_Config_Load_Default_Command(t *testing.T) {
-	fakePassengerStatus("invalid xml")
-	defer teardown()
+	tempFilePath := fakePassengerStatus("invalid xml")
+	defer teardown(tempFilePath)
 
 	r := &passenger{}
 
@@ -58,16 +75,16 @@ func Test_Default_Config_Load_Default_Command(t *testing.T) {
 
 	err := r.Gather(&acc)
 	require.Error(t, err)
-	assert.Equal(t, err.Error(), "exec: \"passenger-status\": executable file not found in $PATH")
+	assert.Contains(t, err.Error(), "exec: \"passenger-status\": executable file not found in ")
 }
 
 func TestPassengerGenerateMetric(t *testing.T) {
-	fakePassengerStatus(sampleStat)
-	defer teardown()
+	tempFilePath := fakePassengerStatus(sampleStat)
+	defer teardown(tempFilePath)
 
 	//Now we tested again above server, with our authentication data
 	r := &passenger{
-		Command: "/tmp/passenger-status",
+		Command: tempFilePath,
 	}
 
 	var acc testutil.Accumulator
diff --git a/plugins/inputs/phpfpm/phpfpm_test.go b/plugins/inputs/phpfpm/phpfpm_test.go
index 7be2e6a27..6db740df4 100644
--- a/plugins/inputs/phpfpm/phpfpm_test.go
+++ b/plugins/inputs/phpfpm/phpfpm_test.go
@@ -1,3 +1,8 @@
+// +build !windows
+
+// TODO: Windows - should be enabled for Windows when super asterisk is fixed on Windows
+// https://github.com/influxdata/telegraf/issues/6248
+
 package phpfpm
 
 import (
diff --git a/plugins/inputs/postfix/postfix.go b/plugins/inputs/postfix/postfix.go
index 8700362d0..87e11a195 100644
--- a/plugins/inputs/postfix/postfix.go
+++ b/plugins/inputs/postfix/postfix.go
@@ -1,3 +1,7 @@
+// +build !windows
+
+// postfix doesn't aim for Windows
+
 package postfix
 
 import (
diff --git a/plugins/inputs/postfix/postfix_test.go b/plugins/inputs/postfix/postfix_test.go
index 5dbc91d13..ad997eebd 100644
--- a/plugins/inputs/postfix/postfix_test.go
+++ b/plugins/inputs/postfix/postfix_test.go
@@ -1,3 +1,5 @@
+// +build !windows
+
 package postfix
 
 import (
diff --git a/plugins/inputs/postfix/postfix_windows.go b/plugins/inputs/postfix/postfix_windows.go
new file mode 100644
index 000000000..122c1543d
--- /dev/null
+++ b/plugins/inputs/postfix/postfix_windows.go
@@ -0,0 +1,3 @@
+// +build windows
+
+package postfix
diff --git a/plugins/inputs/powerdns/powerdns_test.go b/plugins/inputs/powerdns/powerdns_test.go
index fe64be5db..0fe3e3105 100644
--- a/plugins/inputs/powerdns/powerdns_test.go
+++ b/plugins/inputs/powerdns/powerdns_test.go
@@ -3,11 +3,14 @@ package powerdns
 import (
 	"fmt"
 	"net"
+	"os"
+	"path/filepath"
 	"testing"
 
-	"github.com/influxdata/telegraf/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/testutil"
 )
 
 type statServer struct{}
@@ -71,7 +74,8 @@ func (s statServer) serverSocket(l net.Listener) {
 func TestPowerdnsGeneratesMetrics(t *testing.T) {
 	// We create a fake server to return test data
 	randomNumber := int64(5239846799706671610)
-	socket, err := net.Listen("unix", fmt.Sprintf("/tmp/pdns%d.controlsocket", randomNumber))
+	sockname := filepath.Join(os.TempDir(), fmt.Sprintf("pdns%d.controlsocket", randomNumber))
+	socket, err := net.Listen("unix", sockname)
 	if err != nil {
 		t.Fatal("Cannot initialize server on port ")
 	}
@@ -82,11 +86,10 @@ func TestPowerdnsGeneratesMetrics(t *testing.T) {
 	go s.serverSocket(socket)
 
 	p := &Powerdns{
-		UnixSockets: []string{fmt.Sprintf("/tmp/pdns%d.controlsocket", randomNumber)},
+		UnixSockets: []string{sockname},
 	}
 
 	var acc testutil.Accumulator
-
 	err = acc.GatherError(p.Gather)
 	require.NoError(t, err)
 
diff --git a/plugins/inputs/powerdns_recursor/powerdns_recursor_test.go b/plugins/inputs/powerdns_recursor/powerdns_recursor_test.go
index d0f5690cc..25d39dcd4 100644
--- a/plugins/inputs/powerdns_recursor/powerdns_recursor_test.go
+++ b/plugins/inputs/powerdns_recursor/powerdns_recursor_test.go
@@ -99,8 +99,8 @@ var intOverflowMetrics = "all-outqueries\t18446744073709550195\nanswers-slow\t36
 	"x-ourtime2-4\t302\nx-ourtime4-8\t194\nx-ourtime8-16\t24\n"
 
 func TestPowerdnsRecursorGeneratesMetrics(t *testing.T) {
-	if runtime.GOOS == "darwin" {
-		t.Skip("Skipping test on darwin")
+	if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
+		t.Skip("Skipping on windows and darwin, as unixgram sockets are not supported")
 	}
 	// We create a fake server to return test data
 	controlSocket := "/tmp/pdns5724354148158589552.controlsocket"
diff --git a/plugins/inputs/redfish/redfish_test.go b/plugins/inputs/redfish/redfish_test.go
index 8821b3d97..c3c6f0d10 100644
--- a/plugins/inputs/redfish/redfish_test.go
+++ b/plugins/inputs/redfish/redfish_test.go
@@ -8,9 +8,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
 )
 
 func TestDellApis(t *testing.T) {
@@ -643,7 +645,6 @@ func checkAuth(r *http.Request, username, password string) bool {
 }
 
 func TestConnection(t *testing.T) {
-
 	r := &Redfish{
 		Address:          "http://127.0.0.1",
 		Username:         "test",
@@ -654,8 +655,10 @@ func TestConnection(t *testing.T) {
 	var acc testutil.Accumulator
 	r.Init()
 	err := r.Gather(&acc)
-	require.Error(t, err)
-	require.Contains(t, err.Error(), "connect: connection refused")
+	if assert.Error(t, err) {
+		_, ok := err.(*url.Error)
+		assert.True(t, ok)
+	}
 }
 
 func TestInvalidUsernameorPassword(t *testing.T) {
diff --git a/plugins/inputs/snmp/snmp_test.go b/plugins/inputs/snmp/snmp_test.go
index 583b2dc84..9d9d7df23 100644
--- a/plugins/inputs/snmp/snmp_test.go
+++ b/plugins/inputs/snmp/snmp_test.go
@@ -640,8 +640,8 @@ func TestGather(t *testing.T) {
 	assert.Len(t, m.Fields, 2)
 	assert.Equal(t, 234, m.Fields["myfield2"])
 	assert.Equal(t, "baz", m.Fields["myfield3"])
-	assert.True(t, tstart.Before(m.Time))
-	assert.True(t, tstop.After(m.Time))
+	assert.True(t, !tstart.After(m.Time))
+	assert.True(t, !tstop.Before(m.Time))
 
 	m2 := acc.Metrics[1]
 	assert.Equal(t, "myOtherTable", m2.Measurement)
diff --git a/plugins/inputs/socket_listener/socket_listener_test.go b/plugins/inputs/socket_listener/socket_listener_test.go
index a46add15c..03d0c0453 100644
--- a/plugins/inputs/socket_listener/socket_listener_test.go
+++ b/plugins/inputs/socket_listener/socket_listener_test.go
@@ -9,6 +9,7 @@ import (
 	"net"
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 	"time"
 
@@ -138,7 +139,8 @@ func TestSocketListener_unix(t *testing.T) {
 
 	defer testEmptyLog(t)()
 
-	os.Create(sock)
+	f, _ := os.Create(sock)
+	f.Close()
 	sl := newSocketListener()
 	sl.Log = testutil.Logger{}
 	sl.ServiceAddress = "unix://" + sock
@@ -156,6 +158,10 @@ func TestSocketListener_unix(t *testing.T) {
 }
 
 func TestSocketListener_unixgram(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping on Windows, as unixgram sockets are not supported")
+	}
+
 	tmpdir, err := ioutil.TempDir("", "telegraf")
 	require.NoError(t, err)
 	defer os.RemoveAll(tmpdir)
diff --git a/plugins/inputs/syslog/nontransparent_test.go b/plugins/inputs/syslog/nontransparent_test.go
index d0352c6ae..544b31929 100644
--- a/plugins/inputs/syslog/nontransparent_test.go
+++ b/plugins/inputs/syslog/nontransparent_test.go
@@ -9,11 +9,12 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/internal"
 	framing "github.com/influxdata/telegraf/internal/syslog"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
 )
 
 func getTestCasesForNonTransparent() []testCaseStream {
diff --git a/plugins/inputs/syslog/octetcounting_test.go b/plugins/inputs/syslog/octetcounting_test.go
index 210b64dbe..87909fcec 100644
--- a/plugins/inputs/syslog/octetcounting_test.go
+++ b/plugins/inputs/syslog/octetcounting_test.go
@@ -10,11 +10,12 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/internal"
 	framing "github.com/influxdata/telegraf/internal/syslog"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
 )
 
 func getTestCasesForOctetCounting() []testCaseStream {
diff --git a/plugins/inputs/syslog/rfc5426_test.go b/plugins/inputs/syslog/rfc5426_test.go
index 31007bad9..2a6d937fb 100644
--- a/plugins/inputs/syslog/rfc5426_test.go
+++ b/plugins/inputs/syslog/rfc5426_test.go
@@ -6,13 +6,15 @@ import (
 	"net"
 	"os"
 	"path/filepath"
+	"runtime"
 	"sync/atomic"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
 )
 
 func getTestCasesForRFC5426() []testCasePacket {
@@ -284,6 +286,10 @@ func TestStrict_udp(t *testing.T) {
 }
 
 func TestBestEffort_unixgram(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping on Windows, as unixgram sockets are not supported")
+	}
+
 	tmpdir, err := ioutil.TempDir("", "telegraf")
 	require.NoError(t, err)
 	defer os.RemoveAll(tmpdir)
@@ -293,6 +299,10 @@ func TestBestEffort_unixgram(t *testing.T) {
 }
 
 func TestStrict_unixgram(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping on Windows, as unixgram sockets are not supported")
+	}
+
 	tmpdir, err := ioutil.TempDir("", "telegraf")
 	require.NoError(t, err)
 	defer os.RemoveAll(tmpdir)
diff --git a/plugins/inputs/syslog/syslog.go b/plugins/inputs/syslog/syslog.go
index 6b3615a3e..17b9b77a5 100644
--- a/plugins/inputs/syslog/syslog.go
+++ b/plugins/inputs/syslog/syslog.go
@@ -7,6 +7,7 @@ import (
 	"net"
 	"net/url"
 	"os"
+	"path/filepath"
 	"strings"
 	"sync"
 	"time"
@@ -16,6 +17,7 @@ import (
 	"github.com/influxdata/go-syslog/v2/nontransparent"
 	"github.com/influxdata/go-syslog/v2/octetcounting"
 	"github.com/influxdata/go-syslog/v2/rfc5424"
+
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/internal"
 	framing "github.com/influxdata/telegraf/internal/syslog"
@@ -195,7 +197,10 @@ func getAddressParts(a string) (string, string, error) {
 		return "", "", fmt.Errorf("missing protocol within address '%s'", a)
 	}
 
-	u, _ := url.Parse(a)
+	u, err := url.Parse(filepath.ToSlash(a)) //convert backslashes to slashes (to make Windows path a valid URL)
+	if err != nil {
+		return "", "", fmt.Errorf("could not parse address '%s': %v", a, err)
+	}
 	switch u.Scheme {
 	case "unix", "unixpacket", "unixgram":
 		return parts[0], parts[1], nil
diff --git a/plugins/inputs/syslog/syslog_test.go b/plugins/inputs/syslog/syslog_test.go
index 66568380e..ac0539d30 100644
--- a/plugins/inputs/syslog/syslog_test.go
+++ b/plugins/inputs/syslog/syslog_test.go
@@ -4,12 +4,14 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 	"time"
 
-	"github.com/influxdata/telegraf/testutil"
 	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/testutil"
 )
 
 const (
@@ -49,13 +51,16 @@ func TestAddress(t *testing.T) {
 	require.NoError(t, err)
 	sock := filepath.Join(tmpdir, "syslog.TestAddress.sock")
 
-	rec = &Syslog{
-		Address: "unixgram://" + sock,
+	if runtime.GOOS != "windows" {
+		// Skipping on Windows, as unixgram sockets are not supported
+		rec = &Syslog{
+			Address: "unixgram://" + sock,
+		}
+		err = rec.Start(&testutil.Accumulator{})
+		require.NoError(t, err)
+		require.Equal(t, sock, rec.Address)
+		rec.Stop()
 	}
-	err = rec.Start(&testutil.Accumulator{})
-	require.NoError(t, err)
-	require.Equal(t, sock, rec.Address)
-	rec.Stop()
 
 	// Default port is 6514
 	rec = &Syslog{
diff --git a/plugins/inputs/tail/tail_test.go b/plugins/inputs/tail/tail_test.go
index 5669fbf2e..83f6c9e78 100644
--- a/plugins/inputs/tail/tail_test.go
+++ b/plugins/inputs/tail/tail_test.go
@@ -5,11 +5,13 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
-	"runtime"
-	"strings"
+	"path/filepath"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/plugins/parsers"
@@ -17,8 +19,10 @@ import (
 	"github.com/influxdata/telegraf/plugins/parsers/influx"
 	"github.com/influxdata/telegraf/plugins/parsers/json"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
+)
+
+var (
+	testdataDir = getTestdataDir()
 )
 
 func TestTailBadLine(t *testing.T) {
@@ -58,7 +62,7 @@ func TestTailBadLine(t *testing.T) {
 	assert.Contains(t, buf.String(), "Malformed log line")
 }
 
-func TestTailDosLineendings(t *testing.T) {
+func TestTailDosLineEndings(t *testing.T) {
 	tmpfile, err := ioutil.TempFile("", "")
 	require.NoError(t, err)
 	defer os.Remove(tmpfile.Name())
@@ -92,14 +96,13 @@ func TestTailDosLineendings(t *testing.T) {
 }
 
 func TestGrokParseLogFilesWithMultiline(t *testing.T) {
-	thisdir := getCurrentDir()
 	//we make sure the timeout won't kick in
 	duration, _ := time.ParseDuration("100s")
 
 	tt := NewTail()
 	tt.Log = testutil.Logger{}
 	tt.FromBeginning = true
-	tt.Files = []string{thisdir + "testdata/test_multiline.log"}
+	tt.Files = []string{filepath.Join(testdataDir, "test_multiline.log")}
 	tt.MultilineConfig = MultilineConfig{
 		Pattern:        `^[^\[]`,
 		MatchWhichLine: Previous,
@@ -117,7 +120,7 @@ func TestGrokParseLogFilesWithMultiline(t *testing.T) {
 
 	acc.Wait(3)
 
-	expectedPath := thisdir + "testdata/test_multiline.log"
+	expectedPath := filepath.Join(testdataDir, "test_multiline.log")
 	acc.AssertContainsTaggedFields(t, "tail_grok",
 		map[string]interface{}{
 			"message": "HelloExample: This is debug",
@@ -151,7 +154,7 @@ func TestGrokParseLogFilesWithMultilineTimeout(t *testing.T) {
 	require.NoError(t, err)
 	defer os.Remove(tmpfile.Name())
 
-	// This seems neccessary in order to get the test to read the following lines.
+	// This seems necessary in order to get the test to read the following lines.
 	_, err = tmpfile.WriteString("[04/Jun/2016:12:41:48 +0100] INFO HelloExample: This is fluff\r\n")
 	require.NoError(t, err)
 	require.NoError(t, tmpfile.Sync())
@@ -209,14 +212,13 @@ func TestGrokParseLogFilesWithMultilineTimeout(t *testing.T) {
 }
 
 func TestGrokParseLogFilesWithMultilineTailerCloseFlushesMultilineBuffer(t *testing.T) {
-	thisdir := getCurrentDir()
 	//we make sure the timeout won't kick in
 	duration := 100 * time.Second
 
 	tt := NewTail()
 	tt.Log = testutil.Logger{}
 	tt.FromBeginning = true
-	tt.Files = []string{thisdir + "testdata/test_multiline.log"}
+	tt.Files = []string{filepath.Join(testdataDir, "test_multiline.log")}
 	tt.MultilineConfig = MultilineConfig{
 		Pattern:        `^[^\[]`,
 		MatchWhichLine: Previous,
@@ -236,7 +238,7 @@ func TestGrokParseLogFilesWithMultilineTailerCloseFlushesMultilineBuffer(t *test
 	tt.Stop()
 	acc.Wait(4)
 
-	expectedPath := thisdir + "testdata/test_multiline.log"
+	expectedPath := filepath.Join(testdataDir, "test_multiline.log")
 	acc.AssertContainsTaggedFields(t, "tail_grok",
 		map[string]interface{}{
 			"message": "HelloExample: This is warn",
@@ -251,7 +253,7 @@ func createGrokParser() (parsers.Parser, error) {
 	grokConfig := &parsers.Config{
 		MetricName:             "tail_grok",
 		GrokPatterns:           []string{"%{TEST_LOG_MULTILINE}"},
-		GrokCustomPatternFiles: []string{getCurrentDir() + "testdata/test-patterns"},
+		GrokCustomPatternFiles: []string{filepath.Join(testdataDir, "test-patterns")},
 		DataFormat:             "grok",
 	}
 	parser, err := parsers.NewParser(grokConfig)
@@ -374,11 +376,6 @@ func TestMultipleMetricsOnFirstLine(t *testing.T) {
 		testutil.IgnoreTime())
 }
 
-func getCurrentDir() string {
-	_, filename, _, _ := runtime.Caller(1)
-	return strings.Replace(filename, "tail_test.go", "", 1)
-}
-
 func TestCharacterEncoding(t *testing.T) {
 	full := []telegraf.Metric{
 		testutil.MustMetric("cpu",
@@ -437,7 +434,7 @@ func TestCharacterEncoding(t *testing.T) {
 		{
 			name: "utf-8",
 			plugin: &Tail{
-				Files:               []string{"testdata/cpu-utf-8.influx"},
+				Files:               []string{filepath.Join(testdataDir, "cpu-utf-8.influx")},
 				FromBeginning:       true,
 				MaxUndeliveredLines: 1000,
 				Log:                 testutil.Logger{},
@@ -448,7 +445,7 @@ func TestCharacterEncoding(t *testing.T) {
 		{
 			name: "utf-8 seek",
 			plugin: &Tail{
-				Files:               []string{"testdata/cpu-utf-8.influx"},
+				Files:               []string{filepath.Join(testdataDir, "cpu-utf-8.influx")},
 				MaxUndeliveredLines: 1000,
 				Log:                 testutil.Logger{},
 				CharacterEncoding:   "utf-8",
@@ -459,7 +456,7 @@ func TestCharacterEncoding(t *testing.T) {
 		{
 			name: "utf-16le",
 			plugin: &Tail{
-				Files:               []string{"testdata/cpu-utf-16le.influx"},
+				Files:               []string{filepath.Join(testdataDir, "cpu-utf-16le.influx")},
 				FromBeginning:       true,
 				MaxUndeliveredLines: 1000,
 				Log:                 testutil.Logger{},
@@ -470,7 +467,7 @@ func TestCharacterEncoding(t *testing.T) {
 		{
 			name: "utf-16le seek",
 			plugin: &Tail{
-				Files:               []string{"testdata/cpu-utf-16le.influx"},
+				Files:               []string{filepath.Join(testdataDir, "cpu-utf-16le.influx")},
 				MaxUndeliveredLines: 1000,
 				Log:                 testutil.Logger{},
 				CharacterEncoding:   "utf-16le",
@@ -481,7 +478,7 @@ func TestCharacterEncoding(t *testing.T) {
 		{
 			name: "utf-16be",
 			plugin: &Tail{
-				Files:               []string{"testdata/cpu-utf-16be.influx"},
+				Files:               []string{filepath.Join(testdataDir, "cpu-utf-16be.influx")},
 				FromBeginning:       true,
 				MaxUndeliveredLines: 1000,
 				Log:                 testutil.Logger{},
@@ -565,3 +562,13 @@ func TestTailEOF(t *testing.T) {
 	err = tmpfile.Close()
 	require.NoError(t, err)
 }
+
+func getTestdataDir() string {
+	dir, err := os.Getwd()
+	if err != nil {
+		// if we cannot even establish the test directory, further progress is meaningless
+		panic(err)
+	}
+
+	return filepath.Join(dir, "testdata")
+}
diff --git a/plugins/inputs/x509_cert/x509_cert.go b/plugins/inputs/x509_cert/x509_cert.go
index 983926af1..e5c2f835b 100644
--- a/plugins/inputs/x509_cert/x509_cert.go
+++ b/plugins/inputs/x509_cert/x509_cert.go
@@ -10,6 +10,7 @@ import (
 	"io/ioutil"
 	"net"
 	"net/url"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -60,6 +61,9 @@ func (c *X509Cert) locationToURL(location string) (*url.URL, error) {
 	if strings.HasPrefix(location, "/") {
 		location = "file://" + location
 	}
+	if strings.Index(location, ":\\") == 1 {
+		location = "file://" + filepath.ToSlash(location)
+	}
 
 	u, err := url.Parse(location)
 	if err != nil {
diff --git a/plugins/inputs/x509_cert/x509_cert_test.go b/plugins/inputs/x509_cert/x509_cert_test.go
index c34524457..041d20db7 100644
--- a/plugins/inputs/x509_cert/x509_cert_test.go
+++ b/plugins/inputs/x509_cert/x509_cert_test.go
@@ -7,6 +7,8 @@ import (
 	"io/ioutil"
 	"math/big"
 	"os"
+	"path/filepath"
+	"runtime"
 	"testing"
 	"time"
 
@@ -51,7 +53,7 @@ func TestGatherRemote(t *testing.T) {
 		{name: "wrong port", server: ":99999", error: true},
 		{name: "no server", timeout: 5},
 		{name: "successful https", server: "https://example.org:443", timeout: 5},
-		{name: "successful file", server: "file://" + tmpfile.Name(), timeout: 5},
+		{name: "successful file", server: "file://" + filepath.ToSlash(tmpfile.Name()), timeout: 5},
 		{name: "unsupported scheme", server: "foo://", timeout: 5, error: true},
 		{name: "no certificate", timeout: 5, unset: true, error: true},
 		{name: "closed connection", close: true, error: true},
@@ -166,9 +168,11 @@ func TestGatherLocal(t *testing.T) {
 				t.Fatal(err)
 			}
 
-			err = f.Chmod(test.mode)
-			if err != nil {
-				t.Fatal(err)
+			if runtime.GOOS != "windows" {
+				err = f.Chmod(test.mode)
+				if err != nil {
+					t.Fatal(err)
+				}
 			}
 
 			err = f.Close()
diff --git a/plugins/outputs/socket_writer/socket_writer_test.go b/plugins/outputs/socket_writer/socket_writer_test.go
index 14b25e6c5..98ae51b8d 100644
--- a/plugins/outputs/socket_writer/socket_writer_test.go
+++ b/plugins/outputs/socket_writer/socket_writer_test.go
@@ -6,6 +6,7 @@ import (
 	"net"
 	"os"
 	"path/filepath"
+	"runtime"
 	"sync"
 	"testing"
 
@@ -66,6 +67,10 @@ func TestSocketWriter_unix(t *testing.T) {
 }
 
 func TestSocketWriter_unixgram(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping on Windows, as unixgram sockets are not supported")
+	}
+
 	tmpdir, err := ioutil.TempDir("", "telegraf")
 	require.NoError(t, err)
 	defer os.RemoveAll(tmpdir)
diff --git a/plugins/processors/ifname/ifname_test.go b/plugins/processors/ifname/ifname_test.go
index 85ddc7674..25e130e3a 100644
--- a/plugins/processors/ifname/ifname_test.go
+++ b/plugins/processors/ifname/ifname_test.go
@@ -6,12 +6,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf/config"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/internal/snmp"
 	si "github.com/influxdata/telegraf/plugins/inputs/snmp"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
 )
 
 func TestTable(t *testing.T) {
diff --git a/plugins/processors/ifname/ttl_cache.go b/plugins/processors/ifname/ttl_cache.go
index 8f9c4ae65..99cbab1d5 100644
--- a/plugins/processors/ifname/ttl_cache.go
+++ b/plugins/processors/ifname/ttl_cache.go
@@ -1,6 +1,7 @@
 package ifname
 
 import (
+	"runtime"
 	"time"
 )
 
@@ -30,6 +31,15 @@ func (c *TTLCache) Get(key keyType) (valType, bool, time.Duration) {
 	if !ok {
 		return valType{}, false, 0
 	}
+
+	if runtime.GOOS == "windows" {
+		// Sometimes on Windows `c.now().Sub(v.time) == 0` due to clock resolution issues:
+		// https://github.com/golang/go/issues/17696
+		// https://github.com/golang/go/issues/29485
+		// Force clock to refresh:
+		time.Sleep(time.Nanosecond)
+	}
+
 	age := c.now().Sub(v.time)
 	if age < c.validDuration {
 		return v.val, ok, age
diff --git a/plugins/processors/reverse_dns/rdnscache.go b/plugins/processors/reverse_dns/rdnscache.go
index 1d86b5385..cc9574552 100644
--- a/plugins/processors/reverse_dns/rdnscache.go
+++ b/plugins/processors/reverse_dns/rdnscache.go
@@ -111,7 +111,7 @@ func (d *ReverseDNSCache) lookup(ip string) ([]string, error) {
 	// check if the value is cached
 	d.rwLock.RLock()
 	result, found := d.lockedGetFromCache(ip)
-	if found && result.completed && result.expiresAt.After(time.Now()) {
+	if found && result.completed && !result.expiresAt.Before(time.Now()) {
 		defer d.rwLock.RUnlock()
 		atomic.AddUint64(&d.stats.CacheHit, 1)
 		// cache is valid
@@ -176,7 +176,7 @@ func (d *ReverseDNSCache) subscribeTo(ip string) callbackChannelType {
 // the dnslookup that is returned until you clone it.
 func (d *ReverseDNSCache) lockedGetFromCache(ip string) (lookup *dnslookup, found bool) {
 	lookup, found = d.cache[ip]
-	if found && lookup.expiresAt.Before(time.Now()) {
+	if found && !lookup.expiresAt.After(time.Now()) {
 		return nil, false
 	}
 	return lookup, found
@@ -185,7 +185,7 @@ func (d *ReverseDNSCache) lockedGetFromCache(ip string) (lookup *dnslookup, foun
 // lockedSaveToCache stores a lookup in the correct internal ip cache.
 // you MUST first do a write lock before calling it.
 func (d *ReverseDNSCache) lockedSaveToCache(lookup *dnslookup) {
-	if lookup.expiresAt.Before(time.Now()) {
+	if !lookup.expiresAt.After(time.Now()) {
 		return // don't cache.
 	}
 	d.cache[lookup.ip] = lookup
@@ -277,7 +277,7 @@ func (d *ReverseDNSCache) cleanup() {
 	}
 	ipsToDelete := []string{}
 	for i := 0; i < len(d.expireList); i++ {
-		if d.expireList[i].expiresAt.After(now) {
+		if !d.expireList[i].expiresAt.Before(now) {
 			break // done. Nothing after this point is expired.
 		}
 		ipsToDelete = append(ipsToDelete, d.expireList[i].ip)
diff --git a/plugins/processors/reverse_dns/reversedns_test.go b/plugins/processors/reverse_dns/reversedns_test.go
index 499dffb77..660c25e30 100644
--- a/plugins/processors/reverse_dns/reversedns_test.go
+++ b/plugins/processors/reverse_dns/reversedns_test.go
@@ -1,13 +1,15 @@
 package reverse_dns
 
 import (
+	"runtime"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/influxdata/telegraf/config"
 	"github.com/influxdata/telegraf/metric"
 	"github.com/influxdata/telegraf/testutil"
-	"github.com/stretchr/testify/require"
 )
 
 func TestSimpleReverseLookup(t *testing.T) {
@@ -40,7 +42,10 @@ func TestSimpleReverseLookup(t *testing.T) {
 	processedMetric := acc.GetTelegrafMetrics()[0]
 	f, ok := processedMetric.GetField("source_name")
 	require.True(t, ok)
-	require.EqualValues(t, "localhost", f)
+	if runtime.GOOS != "windows" {
+		// lookupAddr on Windows works differently than on Linux so `source_name` won't be "localhost" on every environment
+		require.EqualValues(t, "localhost", f)
+	}
 
 	tag, ok := processedMetric.GetTag("dest_name")
 	require.True(t, ok)