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- // Copyright 2016, Google Inc.
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- package gax
-
- import (
- "context"
- "errors"
- "testing"
- "time"
- )
-
- var canceledContext context.Context
-
- func init() {
- ctx, cancel := context.WithCancel(context.Background())
- cancel()
- canceledContext = ctx
- }
-
- // recordSleeper is a test implementation of sleeper.
- type recordSleeper int
-
- func (s *recordSleeper) sleep(ctx context.Context, _ time.Duration) error {
- *s++
- return ctx.Err()
- }
-
- type boolRetryer bool
-
- func (r boolRetryer) Retry(err error) (time.Duration, bool) { return 0, bool(r) }
-
- func TestInvokeSuccess(t *testing.T) {
- apiCall := func(context.Context, CallSettings) error { return nil }
- var sp recordSleeper
- err := invoke(context.Background(), apiCall, CallSettings{}, sp.sleep)
-
- if err != nil {
- t.Errorf("found error %s, want nil", err)
- }
- if sp != 0 {
- t.Errorf("slept %d times, should not have slept since the call succeeded", int(sp))
- }
- }
-
- func TestInvokeNoRetry(t *testing.T) {
- apiErr := errors.New("foo error")
- apiCall := func(context.Context, CallSettings) error { return apiErr }
- var sp recordSleeper
- err := invoke(context.Background(), apiCall, CallSettings{}, sp.sleep)
-
- if err != apiErr {
- t.Errorf("found error %s, want %s", err, apiErr)
- }
- if sp != 0 {
- t.Errorf("slept %d times, should not have slept since retry is not specified", int(sp))
- }
- }
-
- func TestInvokeNilRetry(t *testing.T) {
- apiErr := errors.New("foo error")
- apiCall := func(context.Context, CallSettings) error { return apiErr }
- var settings CallSettings
- WithRetry(func() Retryer { return nil }).Resolve(&settings)
- var sp recordSleeper
- err := invoke(context.Background(), apiCall, settings, sp.sleep)
-
- if err != apiErr {
- t.Errorf("found error %s, want %s", err, apiErr)
- }
- if sp != 0 {
- t.Errorf("slept %d times, should not have slept since retry is not specified", int(sp))
- }
- }
-
- func TestInvokeNeverRetry(t *testing.T) {
- apiErr := errors.New("foo error")
- apiCall := func(context.Context, CallSettings) error { return apiErr }
- var settings CallSettings
- WithRetry(func() Retryer { return boolRetryer(false) }).Resolve(&settings)
- var sp recordSleeper
- err := invoke(context.Background(), apiCall, settings, sp.sleep)
-
- if err != apiErr {
- t.Errorf("found error %s, want %s", err, apiErr)
- }
- if sp != 0 {
- t.Errorf("slept %d times, should not have slept since retry is not specified", int(sp))
- }
- }
-
- func TestInvokeRetry(t *testing.T) {
- const target = 3
-
- retryNum := 0
- apiErr := errors.New("foo error")
- apiCall := func(context.Context, CallSettings) error {
- retryNum++
- if retryNum < target {
- return apiErr
- }
- return nil
- }
- var settings CallSettings
- WithRetry(func() Retryer { return boolRetryer(true) }).Resolve(&settings)
- var sp recordSleeper
- err := invoke(context.Background(), apiCall, settings, sp.sleep)
-
- if err != nil {
- t.Errorf("found error %s, want nil, call should have succeeded after %d tries", err, target)
- }
- if sp != target-1 {
- t.Errorf("retried %d times, want %d", int(sp), int(target-1))
- }
- }
-
- func TestInvokeRetryTimeout(t *testing.T) {
- apiErr := errors.New("foo error")
- apiCall := func(context.Context, CallSettings) error { return apiErr }
- var settings CallSettings
- WithRetry(func() Retryer { return boolRetryer(true) }).Resolve(&settings)
- var sp recordSleeper
-
- err := invoke(canceledContext, apiCall, settings, sp.sleep)
-
- if err != context.Canceled {
- t.Errorf("found error %s, want %s", err, context.Canceled)
- }
- }
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