Update full linter list and enable some easily resolved new ones

api/testutils/kusttest/harness.go

@@ -22,11 +22,13 @@ type Harness struct {
 }
 
 func MakeHarness(t *testing.T) Harness {
+	t.Helper()
 	return MakeHarnessWithFs(t, filesys.MakeFsInMemory())
 }
 
 func MakeHarnessWithFs(
 	t *testing.T, fSys filesys.FileSystem) Harness {
+	t.Helper()
 	return Harness{
 		t:    t,
 		fSys: fSys,

api/testutils/kusttest/harnessenhanced.go

@@ -47,6 +47,7 @@ type HarnessEnhanced struct {
 }
 
 func MakeEnhancedHarness(t *testing.T) *HarnessEnhanced {
+	t.Helper()
 	r := makeBaseEnhancedHarness(t)
 	r.Harness = MakeHarnessWithFs(t, filesys.MakeFsInMemory())
 	// Point the Harness's file loader to the root ('/')
@@ -56,6 +57,7 @@ func MakeEnhancedHarness(t *testing.T) *HarnessEnhanced {
 }
 
 func MakeEnhancedHarnessWithTmpRoot(t *testing.T) *HarnessEnhanced {
+	t.Helper()
 	r := makeBaseEnhancedHarness(t)
 	fSys := filesys.MakeFsOnDisk()
 	r.Harness = MakeHarnessWithFs(t, fSys)
@@ -72,6 +74,7 @@ func MakeEnhancedHarnessWithTmpRoot(t *testing.T) *HarnessEnhanced {
 }
 
 func makeBaseEnhancedHarness(t *testing.T) *HarnessEnhanced {
+	t.Helper()
 	rf := resmap.NewFactory(
 		provider.NewDefaultDepProvider().GetResourceFactory())
 	return &HarnessEnhanced{

api/testutils/kusttest/hasgett.go

@@ -26,6 +26,7 @@ func AssertActualEqualsExpectedWithTweak(
 	t *testing.T,
 	m resmap.ResMap,
 	tweaker func([]byte) []byte, expected string) {
+	t.Helper()
 	if m == nil {
 		t.Fatalf("Map should not be nil.")
 	}
@@ -49,13 +50,14 @@ func AssertActualEqualsExpectedWithTweak(
 // Pretty printing of file differences.
 func reportDiffAndFail(
 	t *testing.T, actual []byte, expected string) {
+	t.Helper()
 	sE, maxLen := convertToArray(expected)
 	sA, _ := convertToArray(string(actual))
 	fmt.Println("===== ACTUAL BEGIN ========================================")
 	fmt.Print(string(actual))
 	fmt.Println("===== ACTUAL END ==========================================")
 	format := fmt.Sprintf("%%s  %%-%ds %%s\n", maxLen+4)
-	limit := 0
+	var limit int
 	if len(sE) < len(sA) {
 		limit = len(sE)
 	} else {

api/testutils/kusttest/plugintestenv.go

@@ -25,6 +25,7 @@ type pluginTestEnv struct {
 
 // newPluginTestEnv returns a new instance of pluginTestEnv.
 func newPluginTestEnv(t *testing.T) *pluginTestEnv {
+	t.Helper()
 	return &pluginTestEnv{t: t}
 }