angular-cn/packages/core/test/change_detection/util.ts

64 lines
2.4 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {KeyValueChangeRecord, KeyValueChanges} from '@angular/core/src/change_detection/differs/keyvalue_differs';
import {looseIdentical, stringify} from '../../src/util';
export function iterableChangesAsString(
{collection = [] as any, previous = [] as any, additions = [] as any, moves = [] as any,
removals = [] as any, identityChanges = [] as any}): string {
return 'collection: ' + collection.join(', ') + '\n' +
'previous: ' + previous.join(', ') + '\n' +
'additions: ' + additions.join(', ') + '\n' +
'moves: ' + moves.join(', ') + '\n' +
'removals: ' + removals.join(', ') + '\n' +
'identityChanges: ' + identityChanges.join(', ') + '\n';
}
function kvcrAsString(kvcr: KeyValueChangeRecord<string, any>) {
return looseIdentical(kvcr.previousValue, kvcr.currentValue) ?
stringify(kvcr.key) :
(stringify(kvcr.key) + '[' + stringify(kvcr.previousValue) + '->' +
stringify(kvcr.currentValue) + ']');
}
export function kvChangesAsString(kvChanges: KeyValueChanges<string, any>) {
const map: string[] = [];
const previous: string[] = [];
const changes: string[] = [];
const additions: string[] = [];
const removals: string[] = [];
kvChanges.forEachItem(r => map.push(kvcrAsString(r)));
kvChanges.forEachPreviousItem(r => previous.push(kvcrAsString(r)));
kvChanges.forEachChangedItem(r => changes.push(kvcrAsString(r)));
kvChanges.forEachAddedItem(r => additions.push(kvcrAsString(r)));
kvChanges.forEachRemovedItem(r => removals.push(kvcrAsString(r)));
return testChangesAsString({map, previous, additions, changes, removals});
}
export function testChangesAsString(
{map, previous, additions, changes, removals}:
{map?: any[], previous?: any[], additions?: any[], changes?: any[], removals?: any[]}):
string {
if (!map) map = [];
if (!previous) previous = [];
if (!additions) additions = [];
if (!changes) changes = [];
if (!removals) removals = [];
return 'map: ' + map.join(', ') + '\n' +
'previous: ' + previous.join(', ') + '\n' +
'additions: ' + additions.join(', ') + '\n' +
'changes: ' + changes.join(', ') + '\n' +
'removals: ' + removals.join(', ') + '\n';
}