fix(handler): return raw measurement mode value

- return the int type mode value instead of converting it to a boolean
- update attribute query tests accordingly

handler/data_object_attribute_query.go

@@ -290,7 +290,7 @@ func buildMeasurementAttributeValue(
 		}
 		return loadValue(ctx, measurement.DataSource)
 	case "mode":
-		return measurement.Mode == 1, nil
+		return measurement.Mode, nil
 	case "meta":
 		return "MEASUREMENT", nil
 	case "type":

handler/data_object_attribute_query_test.go

@@ -214,7 +214,7 @@ func TestBuildMeasurementAttributeValue(t *testing.T) {
 		expected any
 	}{
 		{field: "value", expected: float64(220)},
-		{field: "mode", expected: true},
+		{field: "mode", expected: int16(1)},
 		{field: "meta", expected: "MEASUREMENT"},
 		{field: "type", expected: "TM"},
 		{field: "name", expected: "110kV_TV.IA_rms"},
@@ -252,12 +252,12 @@ func TestBuildMeasurementAttributeValueMode(t *testing.T) {
 	tests := []struct {
 		name     string
 		mode     int16
-		expected bool
+		expected int16
 	}{
-		{name: "automatic mode", mode: 1, expected: true},
-		{name: "manual mode", mode: 0, expected: false},
-		{name: "other positive mode", mode: 2, expected: false},
-		{name: "negative mode", mode: -1, expected: false},
+		{name: "collected value", mode: 1, expected: 1},
+		{name: "manually assigned value", mode: 0, expected: 0},
+		{name: "other positive mode", mode: 2, expected: 2},
+		{name: "negative mode", mode: -1, expected: -1},
 	}
 
 	for _, tt := range tests {