rnystrom@google.com
a9d24edd0f
R=ajohnsen@google.com Review URL: https://codereview.chromium.org//18356011 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24964 260f80e4-7a28-3924-810f-c04153c831b5
110 lines
3.6 KiB
Dart
110 lines
3.6 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// This file tests stack_trace's ability to parse live stack traces. It's a
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/// dual of dartium_test.dart, since method names can differ somewhat from
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/// platform to platform. No similar file exists for dart2js since the specific
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/// method names there are implementation details.
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import 'package:path/path.dart' as path;
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import 'package:stack_trace/stack_trace.dart';
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import 'package:unittest/unittest.dart';
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String getStackTraceString() {
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try {
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throw '';
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} catch (_, stackTrace) {
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return stackTrace.toString();
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}
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}
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StackTrace getStackTraceObject() {
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try {
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throw '';
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} catch (_, stackTrace) {
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return stackTrace;
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}
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}
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Frame getCaller([int level]) {
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if (level == null) return new Frame.caller();
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return new Frame.caller(level);
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}
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Frame nestedGetCaller(int level) => getCaller(level);
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Trace getCurrentTrace([int level]) => new Trace.current(level);
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Trace nestedGetCurrentTrace(int level) => getCurrentTrace(level);
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void main() {
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group('Trace', () {
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test('.parse parses a real stack trace correctly', () {
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var string = getStackTraceString();
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var trace = new Trace.parse(string);
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var builder = new path.Builder(style: path.Style.url);
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expect(builder.basename(trace.frames.first.uri.path),
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equals('vm_test.dart'));
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expect(trace.frames.first.member, equals('getStackTraceString'));
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});
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test('converts from a native stack trace correctly', () {
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var trace = new Trace.from(getStackTraceObject());
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var builder = new path.Builder(style: path.Style.url);
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expect(builder.basename(trace.frames.first.uri.path),
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equals('vm_test.dart'));
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expect(trace.frames.first.member, equals('getStackTraceObject'));
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});
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group('.current()', () {
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test('with no argument returns a trace starting at the current frame',
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() {
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var trace = new Trace.current();
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expect(trace.frames.first.member, equals('main.<fn>.<fn>.<fn>'));
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});
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test('at level 0 returns a trace starting at the current frame', () {
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var trace = new Trace.current(0);
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expect(trace.frames.first.member, equals('main.<fn>.<fn>.<fn>'));
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});
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test('at level 1 returns a trace starting at the parent frame', () {
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var trace = getCurrentTrace(1);
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expect(trace.frames.first.member, equals('main.<fn>.<fn>.<fn>'));
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});
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test('at level 2 returns a trace starting at the grandparent frame', () {
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var trace = nestedGetCurrentTrace(2);
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expect(trace.frames.first.member, equals('main.<fn>.<fn>.<fn>'));
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});
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test('throws an ArgumentError for negative levels', () {
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expect(() => new Trace.current(-1), throwsArgumentError);
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});
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});
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});
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group('Frame.caller()', () {
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test('with no argument returns the parent frame', () {
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expect(getCaller().member, equals('main.<fn>.<fn>'));
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});
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test('at level 0 returns the current frame', () {
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expect(getCaller(0).member, equals('getCaller'));
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});
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test('at level 1 returns the current frame', () {
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expect(getCaller(1).member, equals('main.<fn>.<fn>'));
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});
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test('at level 2 returns the grandparent frame', () {
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expect(nestedGetCaller(2).member, equals('main.<fn>.<fn>'));
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});
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test('throws an ArgumentError for negative levels', () {
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expect(() => new Frame.caller(-1), throwsArgumentError);
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});
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});
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}
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