reduced the use of 'localhost' in tests

Author: stonedu1011

pkg/kafka/testdata/application-test.yml

@@ -1,5 +1,5 @@
 kafka:
-  brokers: localhost:19092
+  brokers: 127.0.0.1:19092
   bindings:
     default:
       producer:

pkg/kafka/testdata/mock_broker.go

@@ -54,7 +54,7 @@ func WithMockedBroker() test.Options {
         }),
         apptest.WithDynamicProperties(map[string]apptest.PropertyValuerFunc{
             "kafka.brokers": func(ctx context.Context) interface{} {
-                return fmt.Sprintf("localhost:%d", cfg.Port)
+                return fmt.Sprintf("127.0.0.1:%d", cfg.Port)
             },
         }),
         apptest.WithFxOptions(fx.Provide(func() *MockBroker {
@@ -80,7 +80,7 @@ type MockedBrokerConfig struct {
 }
 
 func NewMockedBroker(t *testing.T, cfg *MockedBrokerConfig) *MockBroker {
-    mock := sarama.NewMockBrokerAddr(t, 0, fmt.Sprintf(`localhost:%d`, cfg.Port))
+    mock := sarama.NewMockBrokerAddr(t, 0, fmt.Sprintf(`127.0.0.1:%d`, cfg.Port))
     ret := &MockBroker{
         MockBroker: mock,
         t:          t,

test/apptest/bootstrap_test.go

@@ -270,7 +270,7 @@ func SubTestAdditionalDI(di *webDI) test.GomegaSubTestFunc {
 func SubTestWebController(di *webDI) test.GomegaSubTestFunc {
 	return func(ctx context.Context, t *testing.T, g *gomega.WithT) {
 		port := di.Register.ServerPort()
-		url := fmt.Sprintf("http://localhost:%d/test/api", port)
+		url := fmt.Sprintf("http://127.0.0.1:%d/test/api", port)
 		resp, e := http.DefaultClient.Get(url)
 		g.Expect(e).To(gomega.Succeed(), "http client should be succeeded")
 		g.Expect(resp).To(gomega.Not(gomega.BeNil()), "http response should not be nil ")