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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [runtime/] [debug/] [stack_test.go] - Rev 747

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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")
        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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