style: use thelper (#16777)

server/api/server_test.go

@@ -244,6 +244,7 @@ func (s *GRPCWebTestSuite) makeGrpcRequest(
 }
 
 func readTrailersFromBytes(t *testing.T, dataBytes []byte) Trailer {
+	t.Helper()
 	bufferReader := bytes.NewBuffer(dataBytes)
 	tp := textproto.NewReader(bufio.NewReader(bufferReader))
 

server/export_test.go

@@ -93,6 +93,7 @@ func (s *ExportSystem) Run(args ...string) cmdtest.RunResult {
 
 // MustRun wraps (*cmdtest.System).MustRunC, providing e's context.
 func (s *ExportSystem) MustRun(t *testing.T, args ...string) cmdtest.RunResult {
+	t.Helper()
 	return s.sys.MustRunC(t, s.Ctx, args...)
 }
 

server/util_test.go

@@ -254,6 +254,7 @@ type precedenceCommon struct {
 }
 
 func newPrecedenceCommon(t *testing.T) precedenceCommon {
+	t.Helper()
 	retval := precedenceCommon{}
 
 	// Determine the env. var. name based off the executable name
@@ -295,6 +296,7 @@ func newPrecedenceCommon(t *testing.T) precedenceCommon {
 }
 
 func (v precedenceCommon) setAll(t *testing.T, setFlag, setEnvVar, setConfigFile *string) {
+	t.Helper()
 	if setFlag != nil {
 		if err := v.cmd.Flags().Set(v.flagName, *setFlag); err != nil {
 			t.Fatalf("Failed setting flag %q", v.flagName)