コード例 #1
0
func TestCallersMulti(t *testing.T) {
	m := stack.CallersMulti(0)
	const expected = "github.com/facebookgo/stack/stack_test.go:35 TestCallersMulti"
	first := m.Stacks()[0][0].String()
	if first != expected {
		t.Fatalf(`expected "%s" got "%s"`, expected, first)
	}
}
コード例 #2
0
func TestCallersMultiWithTwo(t *testing.T) {
	m := stack.CallersMulti(0)
	m.AddCallers(0)
	matches := []string{
		"^github.com/facebookgo/stack/stack_test.go:44 +TestCallersMultiWithTwo$",
		"",
		"",
		`^\(Stack 2\)$`,
		"^github.com/facebookgo/stack/stack_test.go:46 +TestCallersMultiWithTwo$",
	}
	match(t, m.String(), matches)
}
コード例 #3
0
// WrapSkip the error and add the current Stack. The argument skip is the
// number of stack frames to ascend, with 0 identifying the caller of Wrap. If
// the error to be wrapped has a MultiStack, the current stack will be added to
// it.  If the error to be wrapped is nil, a nil error is returned.
func WrapSkip(err error, skip int) error {
	// nil errors are returned back as nil.
	if err == nil {
		return nil
	}

	// we're adding another Stack to an already wrapped error.
	if se, ok := err.(hasMultiStack); ok {
		se.MultiStack().AddCallers(skip + 1)
		return err
	}

	// we're create a freshly wrapped error.
	return &Error{
		multiStack: stack.CallersMulti(skip + 1),
		underlying: err,
	}
}