added error-rt gcs test

Signed-off-by: milinddethe15 <[email protected]>

Author: milinddethe15

providers/gcs/fakecred.json

@@ -52,7 +52,8 @@ type Config struct {
 	// ChunkSizeBytes controls the maximum number of bytes of the object that the
 	// Writer will attempt to send to the server in a single request
 	// Used as storage.Writer.ChunkSize of https://pkg.go.dev/google.golang.org/cloud/storage#Writer
-	ChunkSizeBytes int `yaml:"chunk_size_bytes"`
+	ChunkSizeBytes int  `yaml:"chunk_size_bytes"`
+	noAuth         bool `yaml:"no_auth"`
 }
 
 // Bucket implements the store.Bucket and shipper.Bucket interfaces against GCS.
@@ -102,7 +103,9 @@ func NewBucketWithConfig(ctx context.Context, logger log.Logger, gc Config, comp
 		}
 		opts = append(opts, option.WithCredentials(credentials))
 	}
-
+	if gc.noAuth {
+		opts = append(opts, option.WithoutAuthentication())
+	}
 	opts = append(opts,
 		option.WithUserAgent(fmt.Sprintf("thanos-%s/%s (%s)", component, version.Version, runtime.Version())),
 	)

providers/gcs/gcs.go

@@ -167,16 +167,16 @@ func TestNewBucketWithErrorRoundTripper(t *testing.T) {
 		Bucket:         "test-bucket",
 		ServiceAccount: "",
 		UseGRPC:        false,
+		noAuth:         true,
 	}
-	svr, err := gcsemu.NewServer("127.0.0.1:43649", gcsemu.Options{})
+	svr, err := gcsemu.NewServer("127.0.0.1:0", gcsemu.Options{})
 	testutil.Ok(t, err)
 	defer svr.Close()
-	err = os.Setenv("GCS_EMULATOR_HOST", svr.Addr)
+	err = os.Setenv("STORAGE_EMULATOR_HOST", svr.Addr)
 	testutil.Ok(t, err)
-	os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", "fakecred.json")
+
 	bkt, err := NewBucketWithConfig(context.Background(), log.NewNopLogger(), cfg, "test-bucket", rt)
 	testutil.Ok(t, err)
-	testutil.Assert(t, bkt.name == "test-bucket")
 	_, err = bkt.Get(context.Background(), "test-bucket")
 	testutil.NotOk(t, err)
 	testutil.Assert(t, errors.Is(err, rt.Err), "Expected RoundTripper error, got: %v", err)