github.com/google/grumpy@v0.0.0-20171122020858-3ec87959189c/runtime/threading_test.go (about) 1 // Copyright 2016 Google Inc. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package grumpy 16 17 import ( 18 "testing" 19 ) 20 21 func TestRecursiveMutex(t *testing.T) { 22 var m recursiveMutex 23 f := NewRootFrame() 24 m.Lock(f) 25 m.Lock(f) 26 m.Unlock(f) 27 m.Unlock(f) 28 } 29 30 func TestRecursiveMutexUnlockedTooManyTimes(t *testing.T) { 31 var m recursiveMutex 32 f := NewRootFrame() 33 m.Lock(f) 34 m.Unlock(f) 35 oldLogFatal := logFatal 36 logFatal = func(msg string) { panic(msg) } 37 defer func() { 38 logFatal = oldLogFatal 39 if e := recover(); e == nil { 40 t.Error("Unlock didn't call logFatal") 41 } 42 }() 43 m.Unlock(f) 44 } 45 46 func TestRecursiveMutexUnlockFrameMismatch(t *testing.T) { 47 var m recursiveMutex 48 m.Lock(NewRootFrame()) 49 oldLogFatal := logFatal 50 logFatal = func(msg string) { panic(msg) } 51 defer func() { 52 logFatal = oldLogFatal 53 if e := recover(); e == nil { 54 t.Error("Unlock didn't call logFatal") 55 } 56 }() 57 m.Unlock(NewRootFrame()) 58 }