4f823851e2
* Refactored Save function for config * Refactored Save function for config * 'make bench' excluded the effect of test on the results
122 lines
2.7 KiB
Go
122 lines
2.7 KiB
Go
package flock
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import (
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"os"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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// WARNING : this test will delete the file located at "testLockPath". Choose an adequate temporary file name.
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const testLockPath = "/tmp/bitcask_unit_test_lock" // file path to use for the lock
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func TestTryLock(t *testing.T) {
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// test that basic locking functionalities are consistent
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// make sure there is no present lock when starting this test
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os.Remove(testLockPath)
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assert := assert.New(t)
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lock1 := New(testLockPath)
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lock2 := New(testLockPath)
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// 1- take the first lock
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locked1, err := lock1.TryLock()
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assert.True(locked1)
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assert.NoError(err)
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// 2- check that the second lock cannot acquire the lock
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locked2, err := lock2.TryLock()
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assert.False(locked2)
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assert.Error(err)
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// 3- release the first lock
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err = lock1.Unlock()
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assert.NoError(err)
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// 4- check that the second lock can acquire and then release the lock without error
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locked2, err = lock2.TryLock()
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assert.True(locked2)
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assert.NoError(err)
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err = lock2.Unlock()
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assert.NoError(err)
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}
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func TestLock(t *testing.T) {
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assert := assert.New(t)
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// make sure there is no present lock when starting this test
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os.Remove(testLockPath)
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syncChan := make(chan bool)
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// main goroutine: take lock on testPath
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lock := New(testLockPath)
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err := lock.Lock()
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assert.NoError(err)
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go func() {
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// sub routine:
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lock := New(testLockPath)
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// before entering the block '.Lock()' call, signal we are about to do it
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// see below : the main goroutine will wait for a small delay before releasing the lock
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syncChan <- true
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// '.Lock()' should ultimately return without error :
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err := lock.Lock()
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assert.NoError(err)
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err = lock.Unlock()
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assert.NoError(err)
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close(syncChan)
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}()
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// wait for the "ready" signal from the sub routine,
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<-syncChan
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// after that signal wait for a small delay before releasing the lock
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<-time.After(100 * time.Microsecond)
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err = lock.Unlock()
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assert.NoError(err)
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// wait for the sub routine to finish
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<-syncChan
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}
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func TestErrorConditions(t *testing.T) {
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// error conditions implemented in this version :
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// - you can't release a lock you do not hold
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// - you can't lock twice the same lock
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// -- setup
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assert := assert.New(t)
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// make sure there is no present lock when starting this test
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os.Remove(testLockPath)
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lock := New(testLockPath)
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// -- run tests :
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err := lock.Unlock()
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assert.Error(err, "you can't release a lock you do not hold")
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// take the lock once:
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lock.TryLock()
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locked, err := lock.TryLock()
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assert.False(locked)
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assert.Error(err, "you can't lock twice the same lock (using .TryLock())")
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err = lock.Lock()
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assert.Error(err, "you can't lock twice the same lock (using .Lock())")
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// -- teardown
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lock.Unlock()
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}
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