chore(deps): Bump golangci-lint from v1.64.5 to v2.0.2 (#16683)

.circleci/config.yml

@@ -106,7 +106,7 @@ jobs:
       - run: 'make check-deps'
       - run:
           name: "Install golangci-lint"
-          command: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.64.5
+          command: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.0.2
       - run:
           name: "golangci-lint/Linux"
           # There are only 4 vCPUs available for this executor, so use only 4 instead of the default number
@@ -120,7 +120,7 @@ jobs:
       - check-changed-files-or-halt
       - run:
           name: "Install golangci-lint"
-          command: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.64.5
+          command: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.0.2
       - run:
           name: "golangci-lint/macOS"
           # There are only 4 vCPUs available for this executor, so use only 4 instead of the default number
@@ -134,7 +134,7 @@ jobs:
       - check-changed-files-or-halt
       - run:
           name: "Install golangci-lint"
-          command: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.64.5
+          command: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.0.2
       - run:
           name: "golangci-lint/Windows"
           # There are only 4 vCPUs available for this executor, so use only 4 instead of the default number

Makefile

@@ -180,7 +180,7 @@ vet:
 .PHONY: lint-install
 lint-install:
 	@echo "Installing golangci-lint"
-	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.64.5
+	go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.0.2
 
 	@echo "Installing markdownlint"
 	npm install -g markdownlint-cli

config/config_test.go

@@ -903,7 +903,7 @@ func TestConfig_MultipleProcessorsOrder(t *testing.T) {
 			}
 			require.NoError(t, c.LoadAll(filenames...))
 
-			require.Equal(t, len(test.expectedOrder), len(c.Processors))
+			require.Len(t, c.Processors, len(test.expectedOrder))
 
 			var order []string
 			for _, p := range c.Processors {

internal/internal_test.go

@@ -85,7 +85,7 @@ func TestRunTimeoutFastExit(t *testing.T) {
 
 	// Verify "process already finished" log doesn't occur.
 	time.Sleep(time.Millisecond * 75)
-	require.Equal(t, "", buf.String())
+	require.Empty(t, buf.String())
 }
 
 func TestCombinedOutputTimeout(t *testing.T) {

internal/templating/engine_test.go

@@ -19,7 +19,7 @@ func TestEngineAlternateSeparator(t *testing.T) {
 	require.Equal(t, map[string]string{
 		"origin": "host01",
 	}, tags)
-	require.Equal(t, "", field)
+	require.Empty(t, field)
 }
 
 func TestEngineWithWildcardTemplate(t *testing.T) {

migrations/global_agent/migration_test.go

@@ -88,6 +88,7 @@ func TestCases(t *testing.T) {
 			output, n, err := config.ApplyMigrations(input)
 			require.NoError(t, err)
 			require.NotEmpty(t, output)
+			//nolint:testifylint // "useless-assert: meaningless assertion" - false positive
 			require.Positive(t, n, "expected migration application but none applied")
 			actual := config.NewConfig()
 			require.NoError(t, actual.LoadConfigData(output, config.EmptySourcePath))

plugins/aggregators/histogram/histogram_test.go

@@ -525,5 +525,5 @@ func assertContainsTaggedField(t *testing.T, acc *testutil.Accumulator, metricNa
 		return
 	}
 
-	require.Fail(t, fmt.Sprintf("unknown measurement %q with tags: %v, fields: %v", metricName, tags, fields))
+	require.Failf(t, "Unknown measurement", "Unknown measurement %q with tags: %v, fields: %v", metricName, tags, fields)
 }

plugins/common/jolokia2/gatherer_test.go

@@ -96,7 +96,7 @@ func TestJolokia2_makeReadRequests(t *testing.T) {
 	for _, c := range cases {
 		payload := makeReadRequests([]Metric{c.metric})
 
-		require.Equal(t, len(c.expected), len(payload), "Failing case: "+c.metric.Name)
+		require.Len(t, payload, len(c.expected), "Failing case: "+c.metric.Name)
 		for _, actual := range payload {
 			require.Contains(t, c.expected, actual, "Failing case: "+c.metric.Name)
 		}

plugins/common/shim/goshim.go

@@ -107,7 +107,7 @@ func (s *Shim) writeProcessedMetrics() error {
 	if err := serializer.Init(); err != nil {
 		return fmt.Errorf("creating serializer failed: %w", err)
 	}
-	for { //nolint:gosimple // for-select used on purpose
+	for { //nolint:staticcheck // for-select used on purpose
 		select {
 		case m, open := <-s.metricCh:
 			if !open {

plugins/inputs/amd_rocm_smi/amd_rocm_smi_test.go

@@ -1,7 +1,6 @@
 package amd_rocm_smi
 
 import (
-	"errors"
 	"os"
 	"path/filepath"
 	"testing"
@@ -29,7 +28,7 @@ func TestErrorBehaviorDefault(t *testing.T) {
 
 	var acc testutil.Accumulator
 	var ferr *internal.FatalError
-	require.False(t, errors.As(model.Start(&acc), &ferr))
+	require.NotErrorAs(t, model.Start(&acc), &ferr)
 	require.ErrorIs(t, model.Gather(&acc), internal.ErrNotConnected)
 }
 
@@ -48,7 +47,7 @@ func TestErrorBehaviorError(t *testing.T) {
 
 	var acc testutil.Accumulator
 	var ferr *internal.FatalError
-	require.False(t, errors.As(model.Start(&acc), &ferr))
+	require.NotErrorAs(t, model.Start(&acc), &ferr)
 	require.ErrorIs(t, model.Gather(&acc), internal.ErrNotConnected)
 }
 
@@ -67,7 +66,7 @@ func TestErrorBehaviorRetry(t *testing.T) {
 
 	var acc testutil.Accumulator
 	var ferr *internal.FatalError
-	require.False(t, errors.As(model.Start(&acc), &ferr))
+	require.NotErrorAs(t, model.Start(&acc), &ferr)
 	require.ErrorIs(t, model.Gather(&acc), internal.ErrNotConnected)
 }
 

plugins/inputs/clickhouse/clickhouse_test.go

@@ -15,7 +15,7 @@ import (
 
 func TestClusterIncludeExcludeFilter(t *testing.T) {
 	ch := ClickHouse{}
-	require.Equal(t, "", ch.clusterIncludeExcludeFilter())
+	require.Empty(t, ch.clusterIncludeExcludeFilter())
 	ch.ClusterExclude = []string{"test_cluster"}
 	require.Equal(t, "WHERE cluster NOT IN ('test_cluster')", ch.clusterIncludeExcludeFilter())
 

plugins/inputs/cpu/cpu_test.go

@@ -1,7 +1,6 @@
 package cpu
 
 import (
-	"fmt"
 	"testing"
 
 	"github.com/shirou/gopsutil/v4/cpu"
@@ -139,16 +138,14 @@ func assertContainsTaggedFloat(
 							return
 						}
 					} else {
-						require.Fail(t, fmt.Sprintf("Measurement %q does not have type float64", measurement))
+						require.Failf(t, "Wrong type", "Measurement %q does not have type float64", measurement)
 					}
 				}
 			}
 		}
 	}
-	msg := fmt.Sprintf(
+	require.Failf(t, "Measurement not found",
-		"Could not find measurement %q with requested tags within %f of %f, Actual: %f",
+		"Could not find measurement %q with requested tags within %f of %f, Actual: %f", measurement, delta, expectedValue, actualValue)
-		measurement, delta, expectedValue, actualValue)
-	require.Fail(t, msg)
 }
 
 // TestCPUCountChange tests that no errors are encountered if the number of

plugins/inputs/dpdk/dpdk_connector_test.go

@@ -117,7 +117,7 @@ func Test_getCommandResponse(t *testing.T) {
 			buf, err := connector.getCommandResponse(command)
 
 			require.NoError(t, err)
-			require.Equal(t, len(response), len(buf))
+			require.Len(t, buf, len(response))
 			require.Equal(t, response, string(buf))
 		}
 	})

plugins/inputs/dpdk/dpdk_test.go

@@ -31,7 +31,7 @@ func Test_Init(t *testing.T) {
 			SocketPath: "",
 		}
 
-		require.Equal(t, "", dpdk.SocketPath)
+		require.Empty(t, dpdk.SocketPath)
 
 		require.NoError(t, dpdk.Init())
 

plugins/inputs/dpdk/dpdk_utils_test.go

@@ -85,7 +85,7 @@ func Test_getParams(t *testing.T) {
 	t.Run("when passed command with no params then empty string (representing empty params) should be returned", func(t *testing.T) {
 		commandParams := getParams(commandWithParams(command, ""))
 
-		require.Equal(t, "", commandParams)
+		require.Empty(t, commandParams)
 	})
 }
 

plugins/inputs/execd/execd_test.go

@@ -355,7 +355,7 @@ func readChanWithTimeout(t *testing.T, metrics chan telegraf.Metric, timeout tim
 	case m := <-metrics:
 		return m
 	case <-to.C:
-		require.FailNow(t, "timeout waiting for metric")
+		require.Fail(t, "Timeout waiting for metric")
 	}
 	return nil
 }

plugins/inputs/intel_baseband/utils_test.go

@@ -59,7 +59,7 @@ func TestValidatePath(t *testing.T) {
 
 		for _, tc := range testCases {
 			returnPath, err := validatePath(tc.path, tc.ft)
-			require.Equal(t, "", returnPath)
+			require.Empty(t, returnPath)
 			require.ErrorContains(t, err, tc.expectedErrorContains)
 		}
 	})
@@ -77,7 +77,7 @@ func TestValidatePath(t *testing.T) {
 
 		for _, tc := range testCases {
 			returnPath, err := validatePath(tc.path, tc.ft)
-			require.Equal(t, "", returnPath)
+			require.Empty(t, returnPath)
 			require.ErrorContains(t, err, tc.expectedErrorContains)
 		}
 	})
@@ -93,7 +93,7 @@ func TestValidatePath(t *testing.T) {
 
 		for _, tc := range testCases {
 			returnPath, err := validatePath(tc.path, tc.ft)
-			require.Equal(t, "", returnPath)
+			require.Empty(t, returnPath)
 			require.ErrorContains(t, err, tc.expectedErrorContains)
 		}
 	})

plugins/inputs/intel_dlb/intel_dlb_test.go

@@ -26,7 +26,7 @@ func TestDLB_Init(t *testing.T) {
 			SocketPath: "",
 			Log:        testutil.Logger{},
 		}
-		require.Equal(t, "", dlb.SocketPath)
+		require.Empty(t, dlb.SocketPath)
 
 		//nolint:errcheck // we are just testing that socket path gets set to default, not that default is valid
 		dlb.Init()

plugins/inputs/intel_powerstat/intel_powerstat_test.go

@@ -689,7 +689,7 @@ func (m *mockOptGenerator) generate(cfg optConfig) []ptel.Option {
 
 func TestSampleConfig(t *testing.T) {
 	p := &PowerStat{}
-	require.NotZero(t, p.SampleConfig())
+	require.NotEmpty(t, p.SampleConfig())
 }
 
 func TestInit(t *testing.T) {

plugins/inputs/intel_rdt/intel_rdt_test.go

@@ -61,7 +61,7 @@ func TestSplitCSVLineIntoValues(t *testing.T) {
 	wrongLine := "2020-08-12 13:34:36,37,44,0.00,0,0.0"
 	splitCSV, err = splitCSVLineIntoValues(wrongLine)
 	require.Error(t, err)
-	require.Equal(t, "", splitCSV.timeValue)
+	require.Empty(t, splitCSV.timeValue)
 	require.Nil(t, splitCSV.metricsValues)
 	require.Nil(t, splitCSV.coreOrPIDsValues)
 }
@@ -76,7 +76,7 @@ func TestFindPIDsInMeasurement(t *testing.T) {
 	line = "pids not included"
 	result, err = findPIDsInMeasurement(line)
 	require.Error(t, err)
-	require.Equal(t, "", result)
+	require.Empty(t, result)
 }
 
 func TestCreateArgsProcesses(t *testing.T) {

plugins/inputs/intel_rdt/publisher_test.go

@@ -57,7 +57,7 @@ func TestParseCoresMeasurement(t *testing.T) {
 		result, err := parseCoresMeasurement(measurement)
 
 		require.Error(t, err)
-		require.Equal(t, "", result.cores)
+		require.Empty(t, result.cores)
 		require.Nil(t, result.values)
 		require.Equal(t, time.Time{}, result.time)
 	})
@@ -75,7 +75,7 @@ func TestParseCoresMeasurement(t *testing.T) {
 		result, err := parseCoresMeasurement(measurement)
 
 		require.Error(t, err)
-		require.Equal(t, "", result.cores)
+		require.Empty(t, result.cores)
 		require.Nil(t, result.values)
 		require.Equal(t, time.Time{}, result.time)
 	})
@@ -94,7 +94,7 @@ func TestParseCoresMeasurement(t *testing.T) {
 		result, err := parseCoresMeasurement(measurement)
 
 		require.Error(t, err)
-		require.Equal(t, "", result.cores)
+		require.Empty(t, result.cores)
 		require.Nil(t, result.values)
 		require.Equal(t, time.Time{}, result.time)
 	})
@@ -187,8 +187,8 @@ func TestParseProcessesMeasurement(t *testing.T) {
 			result, err := parseProcessesMeasurement(newMeasurement)
 
 			require.Error(t, err)
-			require.Equal(t, "", result.process)
+			require.Empty(t, result.process)
-			require.Equal(t, "", result.cores)
+			require.Empty(t, result.cores)
 			require.Nil(t, result.values)
 			require.Equal(t, time.Time{}, result.time)
 		})

plugins/inputs/internal/internal_test.go

@@ -107,7 +107,7 @@ func TestGostats(t *testing.T) {
 		switch value.(type) {
 		case int64, uint64, float64:
 		default:
-			require.Truef(t, false, "field %s is of non-numeric type %T\n", name, value)
+			require.Failf(t, "Wrong type of field", "Field %s is of non-numeric type %T", name, value)
 		}
 	}
 }

plugins/inputs/lanz/lanz.go

@@ -70,7 +70,7 @@ func (l *Lanz) Stop() {
 }
 
 func receive(acc telegraf.Accumulator, in <-chan *pb.LanzRecord, deviceURL *url.URL) {
-	//nolint:gosimple // for-select used on purpose
+	//nolint:staticcheck // for-select used on purpose
 	for {
 		select {
 		case msg, ok := <-in:

plugins/inputs/mesos/mesos_test.go

@@ -364,7 +364,7 @@ func TestMasterFilter(t *testing.T) {
 	// getMetrics(). We have to find them by checking name prefixes.
 	for k := range masterMetrics {
 		if strings.HasPrefix(k, "master/frameworks/") || strings.HasPrefix(k, "frameworks/") {
-			require.Failf(t, "Found key %s, it should be gone.", k)
+			require.Failf(t, "Wrong key", "Found key %s, it should be gone.", k)
 		}
 	}
 }

plugins/inputs/mock/mock_test.go

@@ -92,7 +92,7 @@ func TestGather(t *testing.T) {
 		case "step":
 			require.InDelta(t, 0.0, v, testutil.DefaultDelta)
 		default:
-			require.Failf(t, "unexpected field %q", k)
+			require.Failf(t, "Unexpected field", "Extra field: %q", k)
 		}
 	}
 }

plugins/inputs/modbus/modbus_test.go

@@ -470,13 +470,13 @@ func generateExpectation(defs []requestExpectation) []request {
 }
 
 func requireEqualRequests(t *testing.T, expected, actual []request) {
-	require.Equal(t, len(expected), len(actual), "request size mismatch")
+	require.Len(t, actual, len(expected), "request size mismatch")
 
 	for i, e := range expected {
 		a := actual[i]
 		require.Equalf(t, e.address, a.address, "address mismatch in request %d", i)
 		require.Equalf(t, e.length, a.length, "length mismatch in request %d", i)
-		require.Equalf(t, len(e.fields), len(a.fields), "no. fields mismatch in request %d", i)
+		require.Lenf(t, a.fields, len(e.fields), "no. fields mismatch in request %d", i)
 		for j, ef := range e.fields {
 			af := a.fields[j]
 			require.Equalf(t, ef.address, af.address, "address mismatch in field %d of request %d", j, i)

plugins/inputs/nsq_consumer/nsq_consumer_test.go

@@ -80,7 +80,7 @@ func waitForPoint(acc *testutil.Accumulator, t *testing.T) {
 	defer ticker.Stop()
 	counter := 0
 
-	//nolint:gosimple // for-select used on purpose
+	//nolint:staticcheck // for-select used on purpose
 	for {
 		select {
 		case <-ticker.C:

plugins/inputs/nvidia_smi/nvidia_smi_test.go

@@ -1,7 +1,6 @@
 package nvidia_smi
 
 import (
-	"errors"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -79,7 +78,7 @@ func TestErrorBehaviorDefault(t *testing.T) {
 
 	var acc testutil.Accumulator
 	var ferr *internal.FatalError
-	require.False(t, errors.As(model.Start(&acc), &ferr))
+	require.NotErrorAs(t, model.Start(&acc), &ferr)
 	require.ErrorIs(t, model.Gather(&acc), internal.ErrNotConnected)
 }
 
@@ -98,7 +97,7 @@ func TestErrorBehaviorError(t *testing.T) {
 
 	var acc testutil.Accumulator
 	var ferr *internal.FatalError
-	require.False(t, errors.As(model.Start(&acc), &ferr))
+	require.NotErrorAs(t, model.Start(&acc), &ferr)
 	require.ErrorIs(t, model.Gather(&acc), internal.ErrNotConnected)
 }
 
@@ -117,7 +116,7 @@ func TestErrorBehaviorRetry(t *testing.T) {
 
 	var acc testutil.Accumulator
 	var ferr *internal.FatalError
-	require.False(t, errors.As(model.Start(&acc), &ferr))
+	require.NotErrorAs(t, model.Start(&acc), &ferr)
 	require.ErrorIs(t, model.Gather(&acc), internal.ErrNotConnected)
 }
 

plugins/inputs/prometheus/kubernetes_test.go

@@ -210,7 +210,7 @@ func TestChangeNamespaceLabelName(t *testing.T) {
 	require.NoError(t, err)
 	tags := prom.kubernetesPods[podID(id)].tags
 	require.Equal(t, "default", tags["pod_namespace"])
-	require.Equal(t, "", tags["namespace"])
+	require.Empty(t, tags["namespace"])
 }
 
 func TestPodHasMatchingNamespace(t *testing.T) {

plugins/inputs/stackdriver/stackdriver_test.go

@@ -1208,7 +1208,7 @@ func TestListMetricDescriptorFilter(t *testing.T) {
 			err := s.Gather(&acc)
 			require.NoError(t, err)
 
-			require.Equal(t, len(client.calls), len(tt.calls))
+			require.Len(t, client.calls, len(tt.calls))
 			for i, expected := range tt.calls {
 				actual := client.calls[i]
 				require.Equal(t, expected.name, actual.name)

plugins/inputs/statsd/statsd_test.go

@@ -1963,7 +1963,7 @@ func TestParseKeyValue(t *testing.T) {
 	require.Equalf(t, "bar", v, "Expected %s, got %s", "bar", v)
 
 	k2, v2 := parseKeyValue("baz")
-	require.Equalf(t, "", k2, "Expected %s, got %s", "", k2)
+	require.Emptyf(t, k2, "Expected %s, got %s", "", k2)
 	require.Equalf(t, "baz", v2, "Expected %s, got %s", "baz", v2)
 }
 

plugins/inputs/varnish/varnish_test.go

@@ -610,7 +610,7 @@ func TestJsonTypes(t *testing.T) {
 		MetricVersion:   2,
 	}
 	require.NoError(t, v.Gather(acc))
-	require.Equal(t, len(exp), len(acc.Metrics))
+	require.Len(t, acc.Metrics, len(exp))
 	for _, metric := range acc.Metrics {
 		require.Equal(t, "varnish", metric.Measurement)
 		for fieldName, value := range metric.Fields {

plugins/inputs/win_perf_counters/win_perf_counters_integration_test.go

@@ -169,12 +169,7 @@ func TestWinPerfCountersConfigGet2Integration(t *testing.T) {
 
 	hostCounters, ok := m.hostCounters["localhost"]
 	require.True(t, ok)
-
+	require.Len(t, hostCounters.counters, 1, "There should be exactly one result returned from the counterPath")
-	if len(hostCounters.counters) == 0 {
-		require.FailNow(t, "no results returned from the counterPath: %v", len(hostCounters.counters))
-	} else if len(hostCounters.counters) > 1 {
-		require.FailNow(t, "too many results returned from the counterPath: %v", len(hostCounters.counters))
-	}
 }
 
 func TestWinPerfCountersConfigGet3Integration(t *testing.T) {
@@ -208,12 +203,7 @@ func TestWinPerfCountersConfigGet3Integration(t *testing.T) {
 
 	hostCounters, ok := m.hostCounters["localhost"]
 	require.True(t, ok)
-
+	require.Len(t, hostCounters.counters, 2, "There should be exactly two results returned from the counterPath")
-	if len(hostCounters.counters) < 2 {
-		require.FailNow(t, "too few results returned from the counterPath: %v", len(hostCounters.counters))
-	} else if len(hostCounters.counters) > 2 {
-		require.FailNow(t, "too many results returned from the counterPath: %v", len(hostCounters.counters))
-	}
 }
 
 func TestWinPerfCountersConfigGet4Integration(t *testing.T) {
@@ -245,12 +235,7 @@ func TestWinPerfCountersConfigGet4Integration(t *testing.T) {
 
 	hostCounters, ok := m.hostCounters["localhost"]
 	require.True(t, ok)
-
+	require.Len(t, hostCounters.counters, 2, "There should be exactly two results returned from the counterPath")
-	if len(hostCounters.counters) < 2 {
-		require.FailNow(t, "too few results returned from the counterPath: %v", len(hostCounters.counters))
-	} else if len(hostCounters.counters) > 2 {
-		require.FailNow(t, "too many results returned from the counterPath: %v", len(hostCounters.counters))
-	}
 }
 
 func TestWinPerfCountersConfigGet5Integration(t *testing.T) {
@@ -282,12 +267,7 @@ func TestWinPerfCountersConfigGet5Integration(t *testing.T) {
 
 	hostCounters, ok := m.hostCounters["localhost"]
 	require.True(t, ok)
-
+	require.Len(t, hostCounters.counters, 4, "There should be exactly four results returned from the counterPath")
-	if len(hostCounters.counters) < 4 {
-		require.FailNow(t, "too few results returned from the counterPath: %v", len(hostCounters.counters))
-	} else if len(hostCounters.counters) > 4 {
-		require.FailNow(t, "too many results returned from the counterPath: %v", len(hostCounters.counters))
-	}
 }
 
 func TestWinPerfCountersConfigGet6Integration(t *testing.T) {
@@ -347,12 +327,7 @@ func TestWinPerfCountersConfigGet7Integration(t *testing.T) {
 
 	hostCounters, ok := m.hostCounters["localhost"]
 	require.True(t, ok)
-
+	require.Len(t, hostCounters.counters, 2, "There should be exactly two results returned from the counterPath")
-	if len(hostCounters.counters) < 2 {
-		require.FailNow(t, "too few results returned from the counterPath: %v", len(hostCounters.counters))
-	} else if len(hostCounters.counters) > 2 {
-		require.FailNow(t, "too many results returned from the counterPath: %v", len(hostCounters.counters))
-	}
 }
 
 func TestWinPerfCountersConfigError1Integration(t *testing.T) {

plugins/outputs/amqp/amqp_test.go

@@ -64,7 +64,7 @@ func TestConnect(t *testing.T) {
 			errFunc: func(t *testing.T, output *AMQP, err error) {
 				cfg := output.config
 				require.Equal(t, []string{DefaultURL}, cfg.brokers)
-				require.Equal(t, "", cfg.exchange)
+				require.Empty(t, cfg.exchange)
 				require.Equal(t, "topic", cfg.exchangeType)
 				require.False(t, cfg.exchangePassive)
 				require.True(t, cfg.exchangeDurable)

plugins/outputs/cloudwatch/cloudwatch_test.go

@@ -32,7 +32,7 @@ func TestBuildDimensions(t *testing.T) {
 	if len(testPoint.Tags()) >= maxDimensions {
 		require.Len(t, dimensions, maxDimensions, "Number of dimensions should be less than MaxDimensions")
 	} else {
-		require.Equal(t, len(testPoint.Tags()), len(dimensions), "Number of dimensions should be equal to number of tags")
+		require.Len(t, dimensions, len(testPoint.Tags()), "Number of dimensions should be equal to number of tags")
 	}
 
 	for i, key := range tagKeys {

plugins/outputs/elasticsearch/elasticsearch_test.go

@@ -588,7 +588,7 @@ func TestGetPipelineName(t *testing.T) {
 
 	for _, test := range tests {
 		pipelineName := e.getPipelineName(e.pipelineName, e.pipelineTagKeys, test.Tags)
-		require.Equal(t, "", pipelineName)
+		require.Empty(t, pipelineName)
 	}
 }
 

plugins/outputs/influxdb/http_test.go

@@ -816,7 +816,7 @@ func TestDBRPTags(t *testing.T) {
 			},
 			handlerFunc: func(t *testing.T, w http.ResponseWriter, r *http.Request) {
 				require.Equal(t, "telegraf", r.FormValue("db"))
-				require.Equal(t, "", r.FormValue("rp"))
+				require.Empty(t, r.FormValue("rp"))
 				w.WriteHeader(http.StatusNoContent)
 			},
 		},
@@ -920,7 +920,7 @@ func TestDBRPTags(t *testing.T) {
 			},
 			handlerFunc: func(t *testing.T, w http.ResponseWriter, r *http.Request) {
 				require.Equal(t, "telegraf", r.FormValue("db"))
-				require.Equal(t, "", r.FormValue("rp"))
+				require.Empty(t, r.FormValue("rp"))
 				w.WriteHeader(http.StatusNoContent)
 			},
 		},

plugins/outputs/kinesis/kinesis_test.go

@@ -68,7 +68,7 @@ func TestPartitionKey(t *testing.T) {
 			Method: "not supported",
 		},
 	}
-	require.Equal(t, "", k.getPartitionKey(testPoint), "PartitionKey should be value of ''")
+	require.Empty(t, k.getPartitionKey(testPoint), "PartitionKey should be value of ''")
 
 	k = KinesisOutput{
 		Log: testutil.Logger{},
@@ -520,11 +520,7 @@ func (m *mockKinesisPutRecords) AssertRequests(
 	t *testing.T,
 	expected []*kinesis.PutRecordsInput,
 ) {
-	require.Equalf(t,
+	require.Lenf(t, m.requests, len(expected), "Expected %v requests", len(expected))
-		len(expected),
-		len(m.requests),
-		"Expected %v requests", len(expected),
-	)
 
 	for i, expectedInput := range expected {
 		actualInput := m.requests[i]
@@ -535,11 +531,7 @@ func (m *mockKinesisPutRecords) AssertRequests(
 			"Expected request %v to have correct StreamName", i,
 		)
 
-		require.Equalf(t,
+		require.Lenf(t, actualInput.Records, len(expectedInput.Records), "Expected request %v to have %v Records", i, len(expectedInput.Records))
-			len(expectedInput.Records),
-			len(actualInput.Records),
-			"Expected request %v to have %v Records", i, len(expectedInput.Records),
-		)
 
 		for r, expectedRecord := range expectedInput.Records {
 			actualRecord := actualInput.Records[r]

plugins/outputs/stackdriver/stackdriver_test.go

@@ -214,7 +214,7 @@ func TestWriteTagsAsResourceLabels(t *testing.T) {
 		case "test_cpu_value/unknown":
 			require.Equal(t, "cpu", ts.Resource.Labels["job_name"])
 		default:
-			require.False(t, true, "Unknown metric type")
+			require.Failf(t, "Wrong metric type", "Unknown metric type: %v", ts.Metric.Type)
 		}
 	}
 }
@@ -290,7 +290,7 @@ func TestWriteMetricTypesOfficial(t *testing.T) {
 		case "custom.googleapis.com/test_mem_h/histogram":
 			require.Equal(t, metricpb.MetricDescriptor_CUMULATIVE, ts.MetricKind)
 		default:
-			require.False(t, true, "Unknown metric type", ts.Metric.Type)
+			require.Failf(t, "Wrong metric type", "Unknown metric type: %v", ts.Metric.Type)
 		}
 	}
 }
@@ -350,7 +350,7 @@ func TestWriteMetricTypesPath(t *testing.T) {
 		case "custom.googleapis.com/test/mem_g/value":
 			require.Equal(t, metricpb.MetricDescriptor_GAUGE, ts.MetricKind)
 		default:
-			require.False(t, true, "Unknown metric type", ts.Metric.Type)
+			require.Failf(t, "Wrong metric type", "Unknown metric type: %v", ts.Metric.Type)
 		}
 	}
 }

plugins/outputs/timestream/timestream_test.go

@@ -1265,7 +1265,7 @@ func comparison(t *testing.T,
 	timestreamRecords []*timestreamwrite.WriteRecordsInput) {
 	result := plugin.TransformMetrics(telegrafMetrics)
 
-	require.Equal(t, len(timestreamRecords), len(result), "The number of transformed records was expected to be different")
+	require.Len(t, result, len(timestreamRecords), "The number of transformed records was expected to be different")
 	for _, tsRecord := range timestreamRecords {
 		require.True(t, arrayContains(result, tsRecord), "Expected that the list of requests to Timestream: \n%s\n\n "+
 			"will contain request: \n%s\n\nUsed MappingMode: %s", result, tsRecord, mappingMode)

plugins/outputs/wavefront/wavefront_test.go

@@ -400,7 +400,7 @@ func TestDefaults(t *testing.T) {
 	defaultWavefront := outputs.Outputs["wavefront"]().(*Wavefront)
 	require.Equal(t, 10000, defaultWavefront.HTTPMaximumBatchSize)
 	require.Equal(t, config.Duration(10*time.Second), defaultWavefront.Timeout)
-	require.Equal(t, "", defaultWavefront.TLSCA)
+	require.Empty(t, defaultWavefront.TLSCA)
 }
 
 func TestMakeAuthOptions(t *testing.T) {

plugins/outputs/zabbix/autoregister_test.go

@@ -68,8 +68,8 @@ func TestZabbixAutoregisterPush(t *testing.T) {
 	zabbixSender.Reset()
 	z.autoregisterPush()
 	require.Len(t, z.autoregisterLastSend, 1)
-	require.Equal(t, "", zabbixSender.hostname)
+	require.Empty(t, zabbixSender.hostname)
-	require.Equal(t, "", zabbixSender.hostMetadata)
+	require.Empty(t, zabbixSender.hostMetadata)
 
 	// Test that autoregister is sent if last send was more than autoregisterSendPeriod ago.
 	z.Autoregister = "autoregister"

plugins/parsers/collectd/parser_test.go

@@ -313,7 +313,7 @@ func writeValueList(testContext context.Context, valueLists []api.ValueList) (*n
 }
 
 func assertEqualMetrics(t *testing.T, expected []metricData, received []telegraf.Metric) {
-	require.Equal(t, len(expected), len(received))
+	require.Len(t, received, len(expected))
 	for i, m := range received {
 		require.Equal(t, expected[i].name, m.Name())
 		require.Equal(t, expected[i].tags, m.Tags())

plugins/parsers/influx/influx_upstream/parser_test.go

@@ -621,7 +621,7 @@ func TestParser(t *testing.T) {
 				require.Equal(t, tt.err.Error(), err.Error())
 			}
 
-			require.Equal(t, len(tt.metrics), len(metrics))
+			require.Len(t, metrics, len(tt.metrics))
 			for i, expected := range tt.metrics {
 				require.Equal(t, expected.Name(), metrics[i].Name())
 				require.Equal(t, expected.Tags(), metrics[i].Tags())
@@ -754,7 +754,7 @@ func TestSeriesParser(t *testing.T) {
 				require.Equal(t, tt.err.Error(), err.Error())
 			}
 
-			require.Equal(t, len(tt.metrics), len(metrics))
+			require.Len(t, metrics, len(tt.metrics))
 			for i, expected := range tt.metrics {
 				require.Equal(t, expected.Name(), metrics[i].Name())
 				require.Equal(t, expected.Tags(), metrics[i].Tags())
@@ -964,7 +964,7 @@ func TestStreamParserErrorString(t *testing.T) {
 				}
 			}
 
-			require.Equal(t, len(tt.errs), len(errs))
+			require.Len(t, errs, len(tt.errs))
 			for i, err := range errs {
 				require.Equal(t, tt.errs[i], err.Error())
 			}

plugins/parsers/influx/parser_test.go

@@ -591,7 +591,7 @@ func TestParser(t *testing.T) {
 			metrics, err := parser.Parse(tt.input)
 			require.Equal(t, tt.err, err)
 
-			require.Equal(t, len(tt.metrics), len(metrics))
+			require.Len(t, metrics, len(tt.metrics))
 			for i, expected := range tt.metrics {
 				require.Equal(t, expected.Name(), metrics[i].Name())
 				require.Equal(t, expected.Tags(), metrics[i].Tags())
@@ -830,7 +830,7 @@ func TestSeriesParser(t *testing.T) {
 				require.Equal(t, tt.err.Error(), err.Error())
 			}
 
-			require.Equal(t, len(tt.metrics), len(metrics))
+			require.Len(t, metrics, len(tt.metrics))
 			for i, expected := range tt.metrics {
 				require.Equal(t, expected.Name(), metrics[i].Name())
 				require.Equal(t, expected.Tags(), metrics[i].Tags())
@@ -931,7 +931,7 @@ func TestStreamParserErrorString(t *testing.T) {
 				}
 			}
 
-			require.Equal(t, len(tt.errs), len(errs))
+			require.Len(t, errs, len(tt.errs))
 			for i, err := range errs {
 				require.Equal(t, tt.errs[i], err.Error())
 			}

plugins/parsers/json_v2/parser_test.go

@@ -91,7 +91,7 @@ func TestMultipleConfigs(t *testing.T) {
 			// The milliseconds weren't matching, seemed like a rounding difference between the influx parser
 			// Compares each metrics times separately and ignores milliseconds
 			if strings.HasPrefix(f.Name(), "timestamp") {
-				require.Equal(t, len(expected), len(actual))
+				require.Len(t, actual, len(expected))
 				for i, m := range actual {
 					require.Equal(t, expected[i].Time().Truncate(time.Second), m.Time().Truncate(time.Second))
 				}

plugins/parsers/nagios/parser_test.go

@@ -80,7 +80,7 @@ func (b *metricBuilder) b() telegraf.Metric {
 // assertEqual asserts two slices to be equal. Note, that the order
 // of the entries matters.
 func assertEqual(t *testing.T, exp, actual []telegraf.Metric) {
-	require.Equal(t, len(exp), len(actual))
+	require.Len(t, actual, len(exp))
 	for i := 0; i < len(exp); i++ {
 		ok := testutil.MetricEqual(exp[i], actual[i])
 		require.True(t, ok)

plugins/serializers/graphite/graphite_test.go

@@ -366,7 +366,7 @@ func TestSerializeValueString(t *testing.T) {
 	buf, err := s.Serialize(m)
 	require.NoError(t, err)
 	mS := strings.Split(strings.TrimSpace(string(buf)), "\n")
-	require.Equal(t, "", mS[0])
+	require.Empty(t, mS[0])
 }
 
 func TestSerializeValueStringWithTagSupport(t *testing.T) {
@@ -390,7 +390,7 @@ func TestSerializeValueStringWithTagSupport(t *testing.T) {
 	buf, err := s.Serialize(m)
 	require.NoError(t, err)
 	mS := strings.Split(strings.TrimSpace(string(buf)), "\n")
-	require.Equal(t, "", mS[0])
+	require.Empty(t, mS[0])
 }
 
 func TestSerializeValueBoolean(t *testing.T) {

testutil/accumulator.go

@@ -399,8 +399,8 @@ func (a *Accumulator) AssertContainsTaggedFields(
 			t.Log("measurement", p.Measurement, "tags", p.Tags, "fields", p.Fields)
 		}
 	}
-	msg := fmt.Sprintf("unknown measurement %q with tags %v", measurement, tags)
+
-	require.Fail(t, msg)
+	require.Failf(t, "Unknown measurement", "Unknown measurement %q with tags %v", measurement, tags)
 }
 
 func (a *Accumulator) AssertDoesNotContainsTaggedFields(
@@ -417,10 +417,7 @@ func (a *Accumulator) AssertDoesNotContainsTaggedFields(
 		}
 
 		if p.Measurement == measurement && reflect.DeepEqual(fields, p.Fields) {
-			msg := fmt.Sprintf(
+			require.Failf(t, "Wrong measurement", "Found measurement %s with tagged fields (tags %v) which should not be there", measurement, tags)
-				"found measurement %s with tagged fields (tags %v) which should not be there",
-				measurement, tags)
-			require.Fail(t, msg)
 		}
 	}
 }
@@ -437,8 +434,7 @@ func (a *Accumulator) AssertContainsFields(
 			return
 		}
 	}
-	msg := fmt.Sprintf("unknown measurement %q", measurement)
+	require.Failf(t, "Unknown measurement", "Unknown measurement %q", measurement)
-	require.Fail(t, msg)
 }
 
 func (a *Accumulator) HasPoint(
@@ -471,8 +467,7 @@ func (a *Accumulator) AssertDoesNotContainMeasurement(t *testing.T, measurement
 	defer a.Unlock()
 	for _, p := range a.Metrics {
 		if p.Measurement == measurement {
-			msg := "found unexpected measurement " + measurement
+			require.Failf(t, "Unexpected measurement", "Found unexpected measurement %q", measurement)
-			require.Fail(t, msg)
 		}
 	}
 }