101 lines
2.6 KiB
Dart
101 lines
2.6 KiB
Dart
/// This file contains tests that make sense only in Dart
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library angular2.test.facade.async_dart_spec;
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import 'package:angular2/test_lib.dart';
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import 'package:angular2/src/facade/async.dart';
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class MockException implements Error { var message; var stackTrace; }
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void functionThatThrows() {
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try { throw new MockException(); }
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catch(e, stack) {
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// If we lose the stack trace the message will no longer match
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// the first line in the stack
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e.message = stack.toString().split('\n')[0];
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e.stackTrace = stack;
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rethrow;
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}
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}
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void functionThatThrowsNonError() {
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throw 'this is an error';
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}
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void expectFunctionThatThrowsWithStackTrace(
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Future future, AsyncTestCompleter async) {
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PromiseWrapper.catchError(future, (err, StackTrace stack) {
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expect(stack.toString().split('\n')[0]).toEqual(err.message);
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async.done();
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});
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}
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void expectFunctionThatThrowsWithoutStackTrace(Future future,
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AsyncTestCompleter async) {
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PromiseWrapper.catchError(future, (err, StackTrace stack) {
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expect(stack).toBe(null);
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async.done();
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});
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}
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main() {
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describe('Completer', () {
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it('should preserve error stack traces',
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inject([AsyncTestCompleter], (async) {
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var c = PromiseWrapper.completer();
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expectFunctionThatThrowsWithStackTrace(c.promise, async);
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try {
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functionThatThrows();
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} catch(e) {
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c.reject(e);
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}
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}));
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// TODO: We might fix this one day; for now testing it to be explicit
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it('CANNOT preserve error stack traces for non-Errors',
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inject([AsyncTestCompleter], (async) {
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var c = PromiseWrapper.completer();
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expectFunctionThatThrowsWithoutStackTrace(c.promise, async);
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try {
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functionThatThrowsNonError();
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} catch(e) {
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c.reject(e);
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}
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}));
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});
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describe('PromiseWrapper', () {
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describe('reject', () {
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it('should preserve error stack traces',
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inject([AsyncTestCompleter], (async) {
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try {
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functionThatThrows();
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} catch(e) {
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var rejectedFuture = PromiseWrapper.reject(e);
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expectFunctionThatThrowsWithStackTrace(rejectedFuture, async);
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}
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}));
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// TODO: We might fix this one day; for now testing it to be explicit
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it('CANNOT preserve stack traces for non-Errors',
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inject([AsyncTestCompleter], (async) {
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try {
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functionThatThrowsNonError();
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} catch(e) {
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var rejectedFuture = PromiseWrapper.reject(e);
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expectFunctionThatThrowsWithoutStackTrace(rejectedFuture, async);
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}
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}));
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});
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});
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}
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