| /* |
| Copyright 2016 The Kubernetes Authors. |
| |
| 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 retry |
| |
| import ( |
| "fmt" |
| "testing" |
| |
| "k8s.io/apimachinery/pkg/api/errors" |
| "k8s.io/apimachinery/pkg/runtime/schema" |
| "k8s.io/apimachinery/pkg/util/wait" |
| ) |
| |
| func TestRetryOnConflict(t *testing.T) { |
| opts := wait.Backoff{Factor: 1.0, Steps: 3} |
| conflictErr := errors.NewConflict(schema.GroupResource{Resource: "test"}, "other", nil) |
| |
| // never returns |
| err := RetryOnConflict(opts, func() error { |
| return conflictErr |
| }) |
| if err != conflictErr { |
| t.Errorf("unexpected error: %v", err) |
| } |
| |
| // returns immediately |
| i := 0 |
| err = RetryOnConflict(opts, func() error { |
| i++ |
| return nil |
| }) |
| if err != nil || i != 1 { |
| t.Errorf("unexpected error: %v", err) |
| } |
| |
| // returns immediately on error |
| testErr := fmt.Errorf("some other error") |
| err = RetryOnConflict(opts, func() error { |
| return testErr |
| }) |
| if err != testErr { |
| t.Errorf("unexpected error: %v", err) |
| } |
| |
| // keeps retrying |
| i = 0 |
| err = RetryOnConflict(opts, func() error { |
| if i < 2 { |
| i++ |
| return errors.NewConflict(schema.GroupResource{Resource: "test"}, "other", nil) |
| } |
| return nil |
| }) |
| if err != nil || i != 2 { |
| t.Errorf("unexpected error: %v", err) |
| } |
| } |