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Unified Diff: test/chain/chain_test.dart

Issue 1218903003: Add tests for stack chains in the browser. (Closed) Base URL: git@github.com:dart-lang/stack_trace@master
Patch Set: Created 5 years, 6 months ago
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Index: test/chain/chain_test.dart
diff --git a/test/chain/chain_test.dart b/test/chain/chain_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..0eb3f008723608be3c777c15730504f14dcc79be
--- /dev/null
+++ b/test/chain/chain_test.dart
@@ -0,0 +1,282 @@
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:path/path.dart' as p;
+import 'package:stack_trace/stack_trace.dart';
+import 'package:test/test.dart';
+
+import 'utils.dart';
+
+void main() {
+ group('Chain.parse()', () {
+ test('parses a real Chain', () {
+ return captureFuture(() => inMicrotask(() => throw 'error'))
+ .then((chain) {
+ expect(new Chain.parse(chain.toString()).toString(),
+ equals(chain.toString()));
+ });
+ });
+
+ test('parses an empty string', () {
+ var chain = new Chain.parse('');
+ expect(chain.traces, isEmpty);
+ });
+
+ test('parses a chain containing empty traces', () {
+ var chain = new Chain.parse(
+ '===== asynchronous gap ===========================\n'
+ '===== asynchronous gap ===========================\n');
+ expect(chain.traces, hasLength(3));
+ expect(chain.traces[0].frames, isEmpty);
+ expect(chain.traces[1].frames, isEmpty);
+ expect(chain.traces[2].frames, isEmpty);
+ });
+ });
+
+ test("toString() ensures that all traces are aligned", () {
+ var chain = new Chain([
+ new Trace.parse('short 10:11 Foo.bar\n'),
+ new Trace.parse('loooooooooooong 10:11 Zop.zoop')
+ ]);
+
+ expect(chain.toString(), equals(
+ 'short 10:11 Foo.bar\n'
+ '===== asynchronous gap ===========================\n'
+ 'loooooooooooong 10:11 Zop.zoop\n'));
+ });
+
+ var userSlashCode = p.join('user', 'code.dart');
+ group('Chain.terse', () {
+ test('makes each trace terse', () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'dart:core 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz\n'
+ 'user/code.dart 10:11 Bang.qux\n'
+ 'dart:core 10:11 Zip.zap\n'
+ 'dart:core 10:11 Zop.zoop'),
+ new Trace.parse(
+ 'user/code.dart 10:11 Bang.qux\n'
+ 'dart:core 10:11 Foo.bar\n'
+ 'package:stack_trace/stack_trace.dart 10:11 Bar.baz\n'
+ 'dart:core 10:11 Zip.zap\n'
+ 'user/code.dart 10:11 Zop.zoop')
+ ]);
+
+ expect(chain.terse.toString(), equals(
+ 'dart:core Bar.baz\n'
+ '$userSlashCode 10:11 Bang.qux\n'
+ '===== asynchronous gap ===========================\n'
+ '$userSlashCode 10:11 Bang.qux\n'
+ 'dart:core Zip.zap\n'
+ '$userSlashCode 10:11 Zop.zoop\n'));
+ });
+
+ test('eliminates internal-only traces', () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'user/code.dart 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz'),
+ new Trace.parse(
+ 'dart:core 10:11 Foo.bar\n'
+ 'package:stack_trace/stack_trace.dart 10:11 Bar.baz\n'
+ 'dart:core 10:11 Zip.zap'),
+ new Trace.parse(
+ 'user/code.dart 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz')
+ ]);
+
+ expect(chain.terse.toString(), equals(
+ '$userSlashCode 10:11 Foo.bar\n'
+ '===== asynchronous gap ===========================\n'
+ '$userSlashCode 10:11 Foo.bar\n'));
+ });
+
+ test("doesn't return an empty chain", () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'dart:core 10:11 Foo.bar\n'
+ 'package:stack_trace/stack_trace.dart 10:11 Bar.baz\n'
+ 'dart:core 10:11 Zip.zap'),
+ new Trace.parse(
+ 'dart:core 10:11 A.b\n'
+ 'package:stack_trace/stack_trace.dart 10:11 C.d\n'
+ 'dart:core 10:11 E.f')
+ ]);
+
+ expect(chain.terse.toString(), equals('dart:core E.f\n'));
+ });
+ });
+
+ group('Chain.foldFrames', () {
+ test('folds each trace', () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'a.dart 10:11 Bar.baz\n'
+ 'b.dart 10:11 Bang.qux\n'
+ 'a.dart 10:11 Zip.zap\n'
+ 'a.dart 10:11 Zop.zoop'),
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'a.dart 10:11 Bar.baz\n'
+ 'a.dart 10:11 Bang.qux\n'
+ 'a.dart 10:11 Zip.zap\n'
+ 'b.dart 10:11 Zop.zoop')
+ ]);
+
+ var folded = chain.foldFrames((frame) => frame.library == 'a.dart');
+ expect(folded.toString(), equals(
+ 'a.dart 10:11 Bar.baz\n'
+ 'b.dart 10:11 Bang.qux\n'
+ 'a.dart 10:11 Zop.zoop\n'
+ '===== asynchronous gap ===========================\n'
+ 'a.dart 10:11 Zip.zap\n'
+ 'b.dart 10:11 Zop.zoop\n'));
+ });
+
+ test('with terse: true, folds core frames as well', () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'dart:async-patch/future.dart 10:11 Zip.zap\n'
+ 'b.dart 10:11 Bang.qux\n'
+ 'dart:core 10:11 Bar.baz\n'
+ 'a.dart 10:11 Zop.zoop'),
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'a.dart 10:11 Bar.baz\n'
+ 'a.dart 10:11 Bang.qux\n'
+ 'a.dart 10:11 Zip.zap\n'
+ 'b.dart 10:11 Zop.zoop')
+ ]);
+
+ var folded = chain.foldFrames((frame) => frame.library == 'a.dart',
+ terse: true);
+ expect(folded.toString(), equals(
+ 'dart:async Zip.zap\n'
+ 'b.dart 10:11 Bang.qux\n'
+ 'a.dart Zop.zoop\n'
+ '===== asynchronous gap ===========================\n'
+ 'a.dart Zip.zap\n'
+ 'b.dart 10:11 Zop.zoop\n'));
+ });
+
+ test('eliminates completely-folded traces', () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'b.dart 10:11 Bang.qux'),
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'a.dart 10:11 Bang.qux'),
+ new Trace.parse(
+ 'a.dart 10:11 Zip.zap\n'
+ 'b.dart 10:11 Zop.zoop')
+ ]);
+
+ var folded = chain.foldFrames((frame) => frame.library == 'a.dart');
+ expect(folded.toString(), equals(
+ 'a.dart 10:11 Foo.bar\n'
+ 'b.dart 10:11 Bang.qux\n'
+ '===== asynchronous gap ===========================\n'
+ 'a.dart 10:11 Zip.zap\n'
+ 'b.dart 10:11 Zop.zoop\n'));
+ });
+
+ test("doesn't return an empty trace", () {
+ var chain = new Chain([
+ new Trace.parse(
+ 'a.dart 10:11 Foo.bar\n'
+ 'a.dart 10:11 Bang.qux')
+ ]);
+
+ var folded = chain.foldFrames((frame) => frame.library == 'a.dart');
+ expect(folded.toString(), equals('a.dart 10:11 Bang.qux\n'));
+ });
+ });
+
+ test('Chain.toTrace eliminates asynchronous gaps', () {
+ var trace = new Chain([
+ new Trace.parse(
+ 'user/code.dart 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz'),
+ new Trace.parse(
+ 'user/code.dart 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz')
+ ]).toTrace();
+
+ expect(trace.toString(), equals(
+ '$userSlashCode 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz\n'
+ '$userSlashCode 10:11 Foo.bar\n'
+ 'dart:core 10:11 Bar.baz\n'));
+ });
+
+ group('Chain.track(Future)', () {
+ test('forwards the future value within Chain.capture()', () {
+ Chain.capture(() {
+ expect(Chain.track(new Future.value('value')),
+ completion(equals('value')));
+
+ var trace = new Trace.current();
+ expect(Chain.track(new Future.error('error', trace))
+ .catchError((e, stackTrace) {
+ expect(e, equals('error'));
+ expect(stackTrace.toString(), equals(trace.toString()));
+ }), completes);
+ });
+ });
+
+ test('forwards the future value outside of Chain.capture()', () {
+ expect(Chain.track(new Future.value('value')),
+ completion(equals('value')));
+
+ var trace = new Trace.current();
+ expect(Chain.track(new Future.error('error', trace))
+ .catchError((e, stackTrace) {
+ expect(e, equals('error'));
+ expect(stackTrace.toString(), equals(trace.toString()));
+ }), completes);
+ });
+ });
+
+ group('Chain.track(Stream)', () {
+ test('forwards stream values within Chain.capture()', () {
+ Chain.capture(() {
+ var controller = new StreamController()
+ ..add(1)..add(2)..add(3)..close();
+ expect(Chain.track(controller.stream).toList(),
+ completion(equals([1, 2, 3])));
+
+ var trace = new Trace.current();
+ controller = new StreamController()..addError('error', trace);
+ expect(Chain.track(controller.stream).toList()
+ .catchError((e, stackTrace) {
+ expect(e, equals('error'));
+ expect(stackTrace.toString(), equals(trace.toString()));
+ }), completes);
+ });
+ });
+
+ test('forwards stream values outside of Chain.capture()', () {
+ Chain.capture(() {
+ var controller = new StreamController()
+ ..add(1)..add(2)..add(3)..close();
+ expect(Chain.track(controller.stream).toList(),
+ completion(equals([1, 2, 3])));
+
+ var trace = new Trace.current();
+ controller = new StreamController()..addError('error', trace);
+ expect(Chain.track(controller.stream).toList()
+ .catchError((e, stackTrace) {
+ expect(e, equals('error'));
+ expect(stackTrace.toString(), equals(trace.toString()));
+ }), completes);
+ });
+ });
+ });
+}
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