blob: e7aaec3120f9875dd5426de0d5fd5ffc6ccd9dfb [file] [log] [blame]
// 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)
}
}