add new paralleltest linter (#1503)

Author: Kunwardeep

go.mod

@@ -29,6 +29,7 @@ require (
 	github.com/jgautheron/goconst v0.0.0-20201117150253-ccae5bf973f3
 	github.com/jingyugao/rowserrcheck v0.0.0-20191204022205-72ab7603b68a
 	github.com/jirfag/go-printf-func-name v0.0.0-20191110105641-45db9963cdd3
+	github.com/kunwardeep/paralleltest v1.0.2
 	github.com/kyoh86/exportloopref v0.1.8
 	github.com/maratori/testpackage v1.0.1
 	github.com/matoous/godox v0.0.0-20190911065817-5d6d842e92eb // v1.0

go.sum

@@ -0,0 +1,21 @@
+package golinters
+
+import (
+	"github.com/kunwardeep/paralleltest/pkg/paralleltest"
+	"golang.org/x/tools/go/analysis"
+
+	"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
+)
+
+func NewParallelTest() *goanalysis.Linter {
+	analyzers := []*analysis.Analyzer{
+		paralleltest.NewAnalyzer(),
+	}
+
+	return goanalysis.NewLinter(
+		"paralleltest",
+		"paralleltest detects missing usage of t.Parallel() method in your Go test",
+		analyzers,
+		nil,
+	).WithLoadMode(goanalysis.LoadModeTypesInfo)
+}

pkg/golinters/paralleltest.go

@@ -324,6 +324,10 @@ func (m Manager) GetAllSupportedLinterConfigs() []*linter.Config {
 			WithPresets(linter.PresetBugs).
 			WithLoadForGoAnalysis().
 			WithURL("https://github.com/polyfloyd/go-errorlint"),
+		linter.NewConfig(golinters.NewParallelTest()).
+			WithPresets(linter.PresetStyle).
+			WithLoadForGoAnalysis().
+			WithURL("https://github.com/kunwardeep/paralleltest"),
 
 		// nolintlint must be last because it looks at the results of all the previous linters for unused nolint directives
 		linter.NewConfig(golinters.NewNoLintLint()).

pkg/lint/lintersdb/manager.go

@@ -0,0 +1,24 @@
+//args: -Eparalleltest
+package testdata
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestFunctionSuccessfulRangeTest(t *testing.T) {
+	t.Parallel()
+
+	testCases := []struct {
+		name string
+	}{{name: "foo"}}
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			fmt.Println(tc.name)
+		})
+	}
+}
+
+func TestFunctionMissingCallToParallel(t *testing.T) {} // ERROR "Function TestFunctionMissingCallToParallel missing the call to method parallel"