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vendor/cloud.google.com/go/storage/invoke_test.go

@@ -0,0 +1,55 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package storage
+
+import (
+	"errors"
+	"testing"
+
+	"golang.org/x/net/context"
+	"google.golang.org/api/googleapi"
+)
+
+func TestInvoke(t *testing.T) {
+	ctx := context.Background()
+	// Time-based tests are flaky. We just make sure that invoke eventually
+	// returns with the right error.
+
+	for _, test := range []struct {
+		count     int   // number of times to return retryable error
+		retryCode int   // error code for retryable error
+		err       error // error to return after count returns of retryCode
+	}{
+		{0, 0, nil},
+		{0, 0, errors.New("foo")},
+		{1, 429, nil},
+		{1, 429, errors.New("bar")},
+		{2, 518, nil},
+		{2, 599, &googleapi.Error{Code: 428}},
+	} {
+		counter := 0
+		call := func() error {
+			counter++
+			if counter <= test.count {
+				return &googleapi.Error{Code: test.retryCode}
+			}
+			return test.err
+		}
+		got := runWithRetry(ctx, call)
+		if got != test.err {
+			t.Errorf("%v: got %v, want %v", test, got, test.err)
+		}
+	}
+}