| // Copyright 2015 The etcd 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 wait |
| |
| import ( |
| "fmt" |
| "testing" |
| "time" |
| ) |
| |
| func TestWait(t *testing.T) { |
| const eid = 1 |
| wt := New() |
| ch := wt.Register(eid) |
| wt.Trigger(eid, "foo") |
| v := <-ch |
| if g, w := fmt.Sprintf("%v (%T)", v, v), "foo (string)"; g != w { |
| t.Errorf("<-ch = %v, want %v", g, w) |
| } |
| |
| if g := <-ch; g != nil { |
| t.Errorf("unexpected non-nil value: %v (%T)", g, g) |
| } |
| } |
| |
| func TestRegisterDupPanic(t *testing.T) { |
| const eid = 1 |
| wt := New() |
| ch1 := wt.Register(eid) |
| |
| panicC := make(chan struct{}, 1) |
| |
| func() { |
| defer func() { |
| if r := recover(); r != nil { |
| panicC <- struct{}{} |
| } |
| }() |
| wt.Register(eid) |
| }() |
| |
| select { |
| case <-panicC: |
| case <-time.After(1 * time.Second): |
| t.Errorf("failed to receive panic") |
| } |
| |
| wt.Trigger(eid, "foo") |
| <-ch1 |
| } |
| |
| func TestTriggerDupSuppression(t *testing.T) { |
| const eid = 1 |
| wt := New() |
| ch := wt.Register(eid) |
| wt.Trigger(eid, "foo") |
| wt.Trigger(eid, "bar") |
| |
| v := <-ch |
| if g, w := fmt.Sprintf("%v (%T)", v, v), "foo (string)"; g != w { |
| t.Errorf("<-ch = %v, want %v", g, w) |
| } |
| |
| if g := <-ch; g != nil { |
| t.Errorf("unexpected non-nil value: %v (%T)", g, g) |
| } |
| } |
| |
| func TestIsRegistered(t *testing.T) { |
| wt := New() |
| |
| wt.Register(0) |
| wt.Register(1) |
| wt.Register(2) |
| |
| for i := uint64(0); i < 3; i++ { |
| if !wt.IsRegistered(i) { |
| t.Errorf("event ID %d isn't registered", i) |
| } |
| } |
| |
| if wt.IsRegistered(4) { |
| t.Errorf("event ID 4 shouldn't be registered") |
| } |
| |
| wt.Trigger(0, "foo") |
| if wt.IsRegistered(0) { |
| t.Errorf("event ID 0 is already triggered, shouldn't be registered") |
| } |
| } |