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-rw-r--r--src/runtime/debug/stack_test.go121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/runtime/debug/stack_test.go b/src/runtime/debug/stack_test.go
new file mode 100644
index 0000000..671057c
--- /dev/null
+++ b/src/runtime/debug/stack_test.go
@@ -0,0 +1,121 @@
+// 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_test
+
+import (
+ "bytes"
+ "fmt"
+ "internal/testenv"
+ "os"
+ "os/exec"
+ "path/filepath"
+ "runtime"
+ . "runtime/debug"
+ "strings"
+ "testing"
+)
+
+func TestMain(m *testing.M) {
+ if os.Getenv("GO_RUNTIME_DEBUG_TEST_DUMP_GOROOT") != "" {
+ fmt.Println(runtime.GOROOT())
+ os.Exit(0)
+ }
+ os.Exit(m.Run())
+}
+
+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.
+
+ goroutine 10 [running]:
+ runtime/debug.Stack(0x0, 0x0, 0x0)
+ /Users/r/go/src/runtime/debug/stack.go:28 +0x80
+ runtime/debug.(*T).ptrmethod(0xc82005ee70, 0x0, 0x0, 0x0)
+ /Users/r/go/src/runtime/debug/stack_test.go:15 +0x29
+ runtime/debug.T.method(0x0, 0x0, 0x0, 0x0)
+ /Users/r/go/src/runtime/debug/stack_test.go:18 +0x32
+ runtime/debug.TestStack(0xc8201ce000)
+ /Users/r/go/src/runtime/debug/stack_test.go:37 +0x38
+ testing.tRunner(0xc8201ce000, 0x664b58)
+ /Users/r/go/src/testing/testing.go:456 +0x98
+ created by testing.RunTests
+ /Users/r/go/src/testing/testing.go:561 +0x86d
+*/
+func TestStack(t *testing.T) {
+ b := T(0).method()
+ lines := strings.Split(string(b), "\n")
+ if len(lines) < 6 {
+ t.Fatal("too few lines")
+ }
+
+ // If built with -trimpath, file locations should start with package paths.
+ // Otherwise, file locations should start with a GOROOT/src prefix
+ // (for whatever value of GOROOT is baked into the binary, not the one
+ // that may be set in the environment).
+ fileGoroot := ""
+ if envGoroot := os.Getenv("GOROOT"); envGoroot != "" {
+ // Since GOROOT is set explicitly in the environment, we can't be certain
+ // that it is the same GOROOT value baked into the binary, and we can't
+ // change the value in-process because runtime.GOROOT uses the value from
+ // initial (not current) environment. Spawn a subprocess to determine the
+ // real baked-in GOROOT.
+ t.Logf("found GOROOT %q from environment; checking embedded GOROOT value", envGoroot)
+ testenv.MustHaveExec(t)
+ exe, err := os.Executable()
+ if err != nil {
+ t.Fatal(err)
+ }
+ cmd := exec.Command(exe)
+ cmd.Env = append(os.Environ(), "GOROOT=", "GO_RUNTIME_DEBUG_TEST_DUMP_GOROOT=1")
+ out, err := cmd.Output()
+ if err != nil {
+ t.Fatal(err)
+ }
+ fileGoroot = string(bytes.TrimSpace(out))
+ } else {
+ // Since GOROOT is not set in the environment, its value (if any) must come
+ // from the path embedded in the binary.
+ fileGoroot = runtime.GOROOT()
+ }
+ filePrefix := ""
+ if fileGoroot != "" {
+ filePrefix = filepath.ToSlash(fileGoroot) + "/src/"
+ }
+
+ n := 0
+ frame := func(file, code string) {
+ t.Helper()
+
+ line := lines[n]
+ if !strings.Contains(line, code) {
+ t.Errorf("expected %q in %q", code, line)
+ }
+ n++
+
+ line = lines[n]
+
+ wantPrefix := "\t" + filePrefix + file
+ if !strings.HasPrefix(line, wantPrefix) {
+ t.Errorf("in line %q, expected prefix %q", line, wantPrefix)
+ }
+ n++
+ }
+ n++
+
+ frame("runtime/debug/stack.go", "runtime/debug.Stack")
+ frame("runtime/debug/stack_test.go", "runtime/debug_test.(*T).ptrmethod")
+ frame("runtime/debug/stack_test.go", "runtime/debug_test.T.method")
+ frame("runtime/debug/stack_test.go", "runtime/debug_test.TestStack")
+ frame("testing/testing.go", "")
+}