| // Copyright 2016 Google LLC |
| // |
| // 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 gax |
| |
| import ( |
| "testing" |
| "time" |
| |
| "google.golang.org/grpc/codes" |
| "google.golang.org/grpc/status" |
| ) |
| |
| var _ Retryer = &boRetryer{} |
| |
| func TestBackofDefault(t *testing.T) { |
| backoff := Backoff{} |
| |
| max := []time.Duration{1, 2, 4, 8, 16, 30, 30, 30, 30, 30} |
| for i, m := range max { |
| max[i] = m * time.Second |
| } |
| |
| for i, w := range max { |
| if d := backoff.Pause(); d > w { |
| t.Errorf("Backoff duration should be at most %s, got %s", w, d) |
| } else if i < len(max)-1 && backoff.cur != max[i+1] { |
| t.Errorf("current envelope is %s, want %s", backoff.cur, max[i+1]) |
| } |
| } |
| } |
| |
| func TestBackoffExponential(t *testing.T) { |
| backoff := Backoff{Initial: 1, Max: 20, Multiplier: 2} |
| want := []time.Duration{1, 2, 4, 8, 16, 20, 20, 20, 20, 20} |
| for _, w := range want { |
| if d := backoff.Pause(); d > w { |
| t.Errorf("Backoff duration should be at most %s, got %s", w, d) |
| } |
| } |
| } |
| |
| func TestOnCodes(t *testing.T) { |
| // Lint errors grpc.Errorf in 1.6. It mistakenly expects the first arg to Errorf to be a string. |
| errf := status.Errorf |
| apiErr := errf(codes.Unavailable, "") |
| tests := []struct { |
| c []codes.Code |
| retry bool |
| }{ |
| {nil, false}, |
| {[]codes.Code{codes.DeadlineExceeded}, false}, |
| {[]codes.Code{codes.DeadlineExceeded, codes.Unavailable}, true}, |
| {[]codes.Code{codes.Unavailable}, true}, |
| } |
| for _, tst := range tests { |
| b := OnCodes(tst.c, Backoff{}) |
| if _, retry := b.Retry(apiErr); retry != tst.retry { |
| t.Errorf("retriable codes: %v, error: %s, retry: %t, want %t", tst.c, apiErr, retry, tst.retry) |
| } |
| } |
| } |