gh-ost/vendor/github.com/ngaut/sync2/atomic_test.go

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// Copyright 2013, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sync2
import (
"testing"
)
func TestAtomicString(t *testing.T) {
var s AtomicString
if s.Get() != "" {
t.Errorf("want empty, got %s", s.Get())
}
s.Set("a")
if s.Get() != "a" {
t.Errorf("want a, got %s", s.Get())
}
if s.CompareAndSwap("b", "c") {
t.Errorf("want false, got true")
}
if s.Get() != "a" {
t.Errorf("want a, got %s", s.Get())
}
if !s.CompareAndSwap("a", "c") {
t.Errorf("want true, got false")
}
if s.Get() != "c" {
t.Errorf("want c, got %s", s.Get())
}
}