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fix(core): fix re-insertions in the iterable differ (#17891)

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fixes #17852
This commit is contained in:
Victor Berchet
2017-07-06 12:11:47 -07:00
committed by Jason Aden
parent dd7c1134e3
commit c69fff15c9
5 changed files with 64 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files
packages/core/test/change_detection/change_detector_util_spec.ts
-1
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@@ -7,7 +7,6 @@
*/
import {devModeEqual} from '@angular/core/src/change_detection/change_detection_util';
import {describe, expect, it} from '@angular/core/testing/src/testing_internal';
export function main() {
describe('ChangeDetectionUtil', () => {
packages/core/test/change_detection/differs/default_iterable_differ_spec.ts
+41 -40
View File
@@ -7,7 +7,6 @@
*/
import {DefaultIterableDiffer, DefaultIterableDifferFactory} from '@angular/core/src/change_detection/differs/default_iterable_differ';
import {beforeEach, describe, expect, it} from '@angular/core/testing/src/testing_internal';
import {TestIterable} from '../../change_detection/iterable';
import {iterableChangesAsString} from '../../change_detection/util';
@@ -28,7 +27,7 @@ class ComplexItem {
export function main() {
describe('iterable differ', function() {
describe('DefaultIterableDiffer', function() {
let differ: any /** TODO #9100 */;
let differ: DefaultIterableDiffer<any>;
beforeEach(() => { differ = new DefaultIterableDiffer(); });
@@ -41,7 +40,7 @@ export function main() {
});
it('should support iterables', () => {
const l = new TestIterable();
const l: any = new TestIterable();
differ.check(l);
expect(differ.toString()).toEqual(iterableChangesAsString({collection: []}));
@@ -64,7 +63,7 @@ export function main() {
});
it('should detect additions', () => {
const l: any[] /** TODO #9100 */ = [];
const l: any[] = [];
differ.check(l);
expect(differ.toString()).toEqual(iterableChangesAsString({collection: []}));
@@ -144,7 +143,7 @@ export function main() {
});
it('should detect changes in list', () => {
const l: any[] /** TODO #9100 */ = [];
const l: any[] = [];
differ.check(l);
l.push('a');
@@ -192,19 +191,7 @@ export function main() {
}));
});
it('should test string by value rather than by reference (Dart)', () => {
const l = ['a', 'boo'];
differ.check(l);
const b = 'b';
const oo = 'oo';
l[1] = b + oo;
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({collection: ['a', 'boo'], previous: ['a', 'boo']}));
});
it('should ignore [NaN] != [NaN] (JS)', () => {
it('should ignore [NaN] != [NaN]', () => {
const l = [NaN];
differ.check(l);
differ.check(l);
@@ -294,6 +281,22 @@ export function main() {
}));
});
// https://github.com/angular/angular/issues/17852
it('support re-insertion', () => {
const l = ['a', '*', '*', 'd', '-', '-', '-', 'e'];
differ.check(l);
l[1] = 'b';
l[5] = 'c';
differ.check(l);
expect(differ.toString()).toEqual(iterableChangesAsString({
collection: ['a', 'b[null->1]', '*[1->2]', 'd', '-', 'c[null->5]', '-[5->6]', 'e'],
previous: ['a', '*[1->2]', '*[2->null]', 'd', '-', '-[5->6]', '-[6->null]', 'e'],
additions: ['b[null->1]', 'c[null->5]'],
moves: ['*[1->2]', '-[5->6]'],
removals: ['*[2->null]', '-[6->null]'],
}));
});
describe('forEachOperation', () => {
function stringifyItemChange(record: any, p: number, c: number, originalIndex: number) {
const suffix = originalIndex == null ? '' : ' [o=' + originalIndex + ']';
@@ -329,8 +332,8 @@ export function main() {
const startData = [0, 1, 2, 3, 4, 5];
const endData = [6, 2, 7, 0, 4, 8];
differ = differ.diff(startData);
differ = differ.diff(endData);
differ = differ.diff(startData) !;
differ = differ.diff(endData) !;
const operations: string[] = [];
differ.forEachOperation((item: any, prev: number, next: number) => {
@@ -352,12 +355,12 @@ export function main() {
const startData = [0, 1, 2, 3];
const endData = [2, 1];
differ = differ.diff(startData);
differ = differ.diff(endData);
differ = differ.diff(startData) !;
differ = differ.diff(endData) !;
const operations: string[] = [];
differ.forEachOperation((item: any, prev: number, next: number) => {
const value = modifyArrayUsingOperation(startData, endData, prev, next);
modifyArrayUsingOperation(startData, endData, prev, next);
operations.push(stringifyItemChange(item, prev, next, item.previousIndex));
});
@@ -372,12 +375,12 @@ export function main() {
const startData = [1, 2, 3, 4, 5, 6];
const endData = [3, 6, 4, 9, 1, 2];
differ = differ.diff(startData);
differ = differ.diff(endData);
differ = differ.diff(startData) !;
differ = differ.diff(endData) !;
const operations: string[] = [];
differ.forEachOperation((item: any, prev: number, next: number) => {
const value = modifyArrayUsingOperation(startData, endData, prev, next);
modifyArrayUsingOperation(startData, endData, prev, next);
operations.push(stringifyItemChange(item, prev, next, item.previousIndex));
});
@@ -393,12 +396,12 @@ export function main() {
const startData = [0, 1, 2, 3, 4];
const endData = [4, 1, 2, 3, 0, 5];
differ = differ.diff(startData);
differ = differ.diff(endData);
differ = differ.diff(startData) !;
differ = differ.diff(endData) !;
const operations: string[] = [];
differ.forEachOperation((item: any, prev: number, next: number) => {
const value = modifyArrayUsingOperation(startData, endData, prev, next);
modifyArrayUsingOperation(startData, endData, prev, next);
operations.push(stringifyItemChange(item, prev, next, item.previousIndex));
});
@@ -414,12 +417,12 @@ export function main() {
const startData = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
const endData = [10, 11, 1, 5, 7, 8, 0, 5, 3, 6];
differ = differ.diff(startData);
differ = differ.diff(endData);
differ = differ.diff(startData) !;
differ = differ.diff(endData) !;
const operations: string[] = [];
differ.forEachOperation((item: any, prev: number, next: number) => {
const value = modifyArrayUsingOperation(startData, endData, prev, next);
modifyArrayUsingOperation(startData, endData, prev, next);
operations.push(stringifyItemChange(item, prev, next, item.previousIndex));
});
@@ -440,8 +443,8 @@ export function main() {
const startData = [1, 2, 3, 4];
const endData = [5, 6, 7, 8];
differ = differ.diff(startData);
differ = differ.diff(endData);
differ = differ.diff(startData) !;
differ = differ.diff(endData) !;
const operations: string[] = [];
differ.forEachOperation((item: any, prev: number, next: number) => {
@@ -465,7 +468,7 @@ export function main() {
it('should treat null as an empty list', () => {
differ.diff(['a', 'b']);
expect(differ.diff(null).toString()).toEqual(iterableChangesAsString({
expect(differ.diff(null !) !.toString()).toEqual(iterableChangesAsString({
previous: ['a[0->null]', 'b[1->null]'],
removals: ['a[0->null]', 'b[1->null]']
}));
@@ -478,7 +481,7 @@ export function main() {
});
describe('trackBy function by id', function() {
let differ: any /** TODO #9100 */;
let differ: any;
const trackByItemId = (index: number, item: any): any => item.id;
@@ -565,8 +568,9 @@ export function main() {
}));
});
});
describe('trackBy function by index', function() {
let differ: any /** TODO #9100 */;
let differ: DefaultIterableDiffer<string>;
const trackByIndex = (index: number, item: any): number => index;
@@ -584,9 +588,6 @@ export function main() {
identityChanges: ['h']
}));
});
});
});
}
packages/core/test/change_detection/differs/iterable_differs_spec.ts
+4 -5
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@@ -8,15 +8,14 @@
import {ReflectiveInjector} from '@angular/core';
import {IterableDiffers} from '@angular/core/src/change_detection/differs/iterable_differs';
import {beforeEach, describe, expect, it} from '@angular/core/testing/src/testing_internal';
import {SpyIterableDifferFactory} from '../../spies';
export function main() {
describe('IterableDiffers', function() {
let factory1: any /** TODO #9100 */;
let factory2: any /** TODO #9100 */;
let factory3: any /** TODO #9100 */;
let factory1: any;
let factory2: any;
let factory3: any;
beforeEach(() => {
factory1 = new SpyIterableDifferFactory();
@@ -57,7 +56,7 @@ export function main() {
.toThrowError(/Cannot extend IterableDiffers without a parent injector/);
});
it('should extend di-inherited diffesr', () => {
it('should extend di-inherited differs', () => {
const parent = new IterableDiffers([factory1]);
const injector =
ReflectiveInjector.resolveAndCreate([{provide: IterableDiffers, useValue: parent}]);