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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package once_test
import (
"once";
"testing";
)
var ncall int
func call() { ncall++ }
func TestDo(t *testing.T) {
ncall = 0;
once.Do(call);
if ncall != 1 {
t.Fatalf("once.Do(call) didn't call(): ncall=%d", ncall)
}
once.Do(call);
if ncall != 1 {
t.Fatalf("second once.Do(call) did call(): ncall=%d", ncall)
}
once.Do(call);
if ncall != 1 {
t.Fatalf("third once.Do(call) did call(): ncall=%d", ncall)
}
}
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