| // Copyright Istio 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" |
| "time" |
| ) |
| |
| func TestConverge(t *testing.T) { |
| t.Run("no converge", func(t *testing.T) { |
| flipFlop := true |
| err := UntilSuccess(func() error { |
| flipFlop = !flipFlop |
| if flipFlop { |
| return fmt.Errorf("flipFlop was true") |
| } |
| return nil |
| }, Converge(2), Timeout(time.Millisecond*10), Delay(time.Millisecond)) |
| if err == nil { |
| t.Fatal("expected no convergence, but test passed") |
| } |
| }) |
| |
| t.Run("converge", func(t *testing.T) { |
| n := 0 |
| err := UntilSuccess(func() error { |
| n++ |
| if n < 10 { |
| return fmt.Errorf("%v is too low, try again", n) |
| } |
| return nil |
| }, Converge(2), Timeout(time.Second*10000), Delay(time.Millisecond)) |
| if err != nil { |
| t.Fatalf("expected convergance, but test failed: %v", err) |
| } |
| }) |
| } |