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// Copyright 2011 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 debug
import (
"strings"
"testing"
)
type T int
func (t *T) ptrmethod() []byte {
return Stack()
}
func (t T) method() []byte {
return t.ptrmethod()
}
/*
The traceback should look something like this, modulo line numbers and hex constants.
Don't worry much about the base levels, but check the ones in our own package.
/Users/r/go/src/pkg/runtime/debug/stack_test.go:15 (0x13878)
*T.ptrmethod: return Stack()
/Users/r/go/src/pkg/runtime/debug/stack_test.go:18 (0x138dd)
T.method: return t.ptrmethod()
/Users/r/go/src/pkg/runtime/debug/stack_test.go:23 (0x13920)
TestStack: b := T(0).method()
/Users/r/go/src/pkg/testing/testing.go:132 (0x14a7a)
tRunner: test.F(t)
/Users/r/go/src/pkg/runtime/proc.c:145 (0xc970)
???: runtime·unlock(&runtime·sched);
*/
func TestStack(t *testing.T) {
b := T(0).method()
lines := strings.Split(string(b), "\n", -1)
if len(lines) <= 6 {
t.Fatal("too few lines")
}
check(t, lines[0], "src/pkg/runtime/debug/stack_test.go")
check(t, lines[1], "\t*T.ptrmethod: return Stack()")
check(t, lines[2], "src/pkg/runtime/debug/stack_test.go")
check(t, lines[3], "\tT.method: return t.ptrmethod()")
check(t, lines[4], "src/pkg/runtime/debug/stack_test.go")
check(t, lines[5], "\tTestStack: b := T(0).method()")
check(t, lines[6], "src/pkg/testing/testing.go")
}
func check(t *testing.T, line, has string) {
if strings.Index(line, has) < 0 {
t.Errorf("expected %q in %q", has, line)
}
}
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