#52: #36: lint test files by default

Author: jirfag

.golangci.yml

@@ -1,6 +1,3 @@
-run:
-  tests: true
-
 linters-settings:
   govet:
     check-shadowing: true

README.md

@@ -219,7 +219,7 @@ Flags:
       --issues-exit-code int        Exit code when issues were found (default 1)
       --build-tags strings          Build tags (not all linters support them)
       --deadline duration           Deadline for total work (default 1m0s)
-      --tests                       Analyze tests (*_test.go)
+      --tests                       Analyze tests (*_test.go) (default true)
       --print-resources-usage       Print avg and max memory usage of golangci-lint and total time
   -c, --config PATH                 Read config from file path PATH
       --no-config                   Don't read config
@@ -289,9 +289,6 @@ There is a [`.golangci.yml`](https://github.com/golangci/golangci-lint/blob/mast
 
 It's a [.golangci.yml](https://github.com/golangci/golangci-lint/blob/master/.golangci.yml) of this repo: we enable more linters than by default and make their settings more strict:
 ```yaml
-run:
-  tests: true
-
 linters-settings:
   govet:
     check-shadowing: true

pkg/commands/run.go

@@ -79,7 +79,7 @@ func (e *Executor) initRun() {
 		1, wh("Exit code when issues were found"))
 	runCmd.Flags().StringSliceVar(&rc.BuildTags, "build-tags", []string{}, wh("Build tags (not all linters support them)"))
 	runCmd.Flags().DurationVar(&rc.Deadline, "deadline", time.Minute, wh("Deadline for total work"))
-	runCmd.Flags().BoolVar(&rc.AnalyzeTests, "tests", false, wh("Analyze tests (*_test.go)"))
+	runCmd.Flags().BoolVar(&rc.AnalyzeTests, "tests", true, wh("Analyze tests (*_test.go)"))
 	runCmd.Flags().BoolVar(&rc.PrintResourcesUsage, "print-resources-usage", false, wh("Print avg and max memory usage of golangci-lint and total time"))
 	runCmd.Flags().StringVarP(&rc.Config, "config", "c", "", wh("Read config from file path `PATH`"))
 	runCmd.Flags().BoolVar(&rc.NoConfig, "no-config", false, wh("Don't read config"))

test/run_test.go

@@ -20,22 +20,20 @@ func installBinary(t assert.TestingT) {
 }
 
 func TestCongratsMessageIfNoIssues(t *testing.T) {
-	installBinary(t)
-
 	out, exitCode := runGolangciLint(t, "../...")
 	assert.Equal(t, 0, exitCode)
 	assert.Equal(t, "Congrats! No issues were found.\n", out)
 }
 
 func TestDeadline(t *testing.T) {
-	installBinary(t)
-
 	out, exitCode := runGolangciLint(t, "--no-config", "--deadline=1ms", "../...")
 	assert.Equal(t, 4, exitCode)
 	assert.Equal(t, "", out) // no 'Congrats! No issues were found.'
 }
 
 func runGolangciLint(t *testing.T, args ...string) (string, int) {
+	installBinary(t)
+
 	runArgs := append([]string{"run"}, args...)
 	cmd := exec.Command("golangci-lint", runArgs...)
 	out, err := cmd.Output()
@@ -54,3 +52,8 @@ func runGolangciLint(t *testing.T, args ...string) (string, int) {
 	ws := cmd.ProcessState.Sys().(syscall.WaitStatus)
 	return string(out), ws.ExitStatus()
 }
+
+func TestTestsAreLintedByDefault(t *testing.T) {
+	out, exitCode := runGolangciLint(t, "--no-config", "./testdata/withtests")
+	assert.Equal(t, 0, exitCode, out)
+}

test/testdata/withtests/p.go

@@ -0,0 +1,23 @@
+package withtests
+
+import "fmt"
+
+var varUsedOnlyInTests bool
+
+func usedOnlyInTests() {}
+
+type someType struct {
+	fieldUsedOnlyInTests bool
+	fieldUsedHere        bool
+}
+
+func usedHere() {
+	v := someType{
+		fieldUsedHere: true,
+	}
+	fmt.Println(v)
+}
+
+func init() {
+	usedHere()
+}

test/testdata/withtests/p_test.go

@@ -0,0 +1,14 @@
+package withtests
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestSomething(t *testing.T) {
+	v := someType{
+		fieldUsedOnlyInTests: true,
+	}
+	fmt.Println(v, varUsedOnlyInTests)
+	usedOnlyInTests()
+}