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Unified Diff: pkg/observe/test/observable_map_test.dart

Issue 19771010: implement dirty checking for @observable objects (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: logging for loops in dirty checking Created 7 years, 5 months ago
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Index: pkg/observe/test/observable_map_test.dart
diff --git a/pkg/observe/test/observable_map_test.dart b/pkg/observe/test/observable_map_test.dart
index 35f761398afa006661ca4c5012bff67c321c97ba..f67df8ca5fe5f32c0c35587d66d66f3890adad66 100644
--- a/pkg/observe/test/observable_map_test.dart
+++ b/pkg/observe/test/observable_map_test.dart
@@ -2,13 +2,23 @@
// 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:observe/observe.dart';
import 'package:unittest/unittest.dart';
-import 'utils.dart';
+import 'observe_test_utils.dart';
main() {
// TODO(jmesserly): need all standard Map API tests.
+ StreamSubscription sub;
+
+ sharedTearDown() {
+ if (sub != null) {
+ sub.cancel();
+ sub = null;
+ }
+ }
+
group('observe length', () {
ObservableMap map;
List<ChangeRecord> changes;
@@ -16,51 +26,53 @@ main() {
setUp(() {
map = toObservable({'a': 1, 'b': 2, 'c': 3});
changes = null;
- map.changes.listen((records) {
+ sub = map.changes.listen((records) {
changes = records.where((r) => r.changes(_LENGTH)).toList();
});
});
- test('add item changes length', () {
+ tearDown(sharedTearDown);
+
+ observeTest('add item changes length', () {
map['d'] = 4;
expect(map, {'a': 1, 'b': 2, 'c': 3, 'd': 4});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_lengthChange]);
});
- test('putIfAbsent changes length', () {
+ observeTest('putIfAbsent changes length', () {
map.putIfAbsent('d', () => 4);
expect(map, {'a': 1, 'b': 2, 'c': 3, 'd': 4});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_lengthChange]);
});
- test('remove changes length', () {
+ observeTest('remove changes length', () {
map.remove('c');
map.remove('a');
expect(map, {'b': 2});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_lengthChange, _lengthChange]);
});
- test('remove non-existent item does not change length', () {
+ observeTest('remove non-existent item does not change length', () {
map.remove('d');
expect(map, {'a': 1, 'b': 2, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, null);
});
- test('set existing item does not change length', () {
+ observeTest('set existing item does not change length', () {
map['c'] = 9000;
expect(map, {'a': 1, 'b': 2, 'c': 9000});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, []);
});
- test('clear changes length', () {
+ observeTest('clear changes length', () {
map.clear();
expect(map, {});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_lengthChange]);
});
});
@@ -73,79 +85,81 @@ main() {
setUp(() {
map = toObservable({'a': 1, 'b': 2, 'c': 3});
changes = null;
- map.changes.listen((records) {
+ sub = map.changes.listen((records) {
changes = records.where((r) => r.changes('b')).toList();
});
});
- test('putIfAbsent new item does not change existing item', () {
+ tearDown(sharedTearDown);
+
+ observeTest('putIfAbsent new item does not change existing item', () {
map.putIfAbsent('d', () => 4);
expect(map, {'a': 1, 'b': 2, 'c': 3, 'd': 4});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, []);
});
- test('set item to null', () {
+ observeTest('set item to null', () {
map['b'] = null;
expect(map, {'a': 1, 'b': null, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_change('b')]);
});
- test('set item to value', () {
+ observeTest('set item to value', () {
map['b'] = 777;
expect(map, {'a': 1, 'b': 777, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_change('b')]);
});
- test('putIfAbsent does not change if already there', () {
+ observeTest('putIfAbsent does not change if already there', () {
map.putIfAbsent('b', () => 1234);
expect(map, {'a': 1, 'b': 2, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, null);
});
- test('change a different item', () {
+ observeTest('change a different item', () {
map['c'] = 9000;
expect(map, {'a': 1, 'b': 2, 'c': 9000});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, []);
});
- test('change the item', () {
+ observeTest('change the item', () {
map['b'] = 9001;
map['b'] = 42;
expect(map, {'a': 1, 'b': 42, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_change('b'), _change('b')]);
});
- test('remove other items', () {
+ observeTest('remove other items', () {
map.remove('a');
expect(map, {'b': 2, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, []);
});
- test('remove the item', () {
+ observeTest('remove the item', () {
map.remove('b');
expect(map, {'a': 1, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes, [_change('b', isRemove: true)]);
});
- test('remove and add back', () {
+ observeTest('remove and add back', () {
map.remove('b');
map['b'] = 2;
expect(map, {'a': 1, 'b': 2, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(changes,
[_change('b', isRemove: true), _change('b', isInsert: true)]);
});
});
- test('toString', () {
+ observeTest('toString', () {
var map = toObservable({'a': 1, 'b': 2});
expect(map.toString(), '{a: 1, b: 2}');
});
@@ -160,7 +174,9 @@ main() {
map.changes.first.then((r) { records = r; });
});
- test('read operations', () {
+ tearDown(sharedTearDown);
+
+ observeTest('read operations', () {
expect(map.length, 2);
expect(map.isEmpty, false);
expect(map['a'], 1);
@@ -172,34 +188,37 @@ main() {
var copy = {};
map.forEach((k, v) { copy[k] = v; });
expect(copy, {'a': 1, 'b': 2});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
// no change from read-only operators
expect(records, null);
+
+ // Make a change so the subscription gets unregistered.
+ map.clear();
});
- test('putIfAbsent', () {
+ observeTest('putIfAbsent', () {
map.putIfAbsent('a', () => 42);
expect(map, {'a': 1, 'b': 2});
map.putIfAbsent('c', () => 3);
expect(map, {'a': 1, 'b': 2, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(records, [
_lengthChange,
_change('c', isInsert: true),
]);
});
- test('[]=', () {
+ observeTest('[]=', () {
map['a'] = 42;
expect(map, {'a': 42, 'b': 2});
map['c'] = 3;
expect(map, {'a': 42, 'b': 2, 'c': 3});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(records, [
_change('a'),
_lengthChange,
@@ -207,22 +226,22 @@ main() {
]);
});
- test('remove', () {
+ observeTest('remove', () {
map.remove('b');
expect(map, {'a': 1});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(records, [
_change('b', isRemove: true),
_lengthChange,
]);
});
- test('clear', () {
+ observeTest('clear', () {
map.clear();
expect(map, {});
- deliverChangeRecords();
+ performMicrotaskCheckpoint();
expectChanges(records, [
_change('a', isRemove: true),
_change('b', isRemove: true),

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