fix(ivy): ngOnChanges only runs for binding updates (#27965)
PR Close #27965
This commit is contained in:
Ben Lesh
@ -22,106 +22,104 @@ withEachNg1Version(() => {
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beforeEach(() => destroyPlatform());
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afterEach(() => destroyPlatform());
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fixmeIvy('FW-715: ngOnChanges being called a second time unexpectedly')
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.it('should bind properties, events', async(() => {
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const ng1Module = angular.module('ng1', []).run(($rootScope: angular.IScope) => {
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$rootScope['name'] = 'world';
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$rootScope['dataA'] = 'A';
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$rootScope['dataB'] = 'B';
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$rootScope['modelA'] = 'initModelA';
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$rootScope['modelB'] = 'initModelB';
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$rootScope['eventA'] = '?';
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$rootScope['eventB'] = '?';
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});
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it('should bind properties, events', async(() => {
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const ng1Module = angular.module('ng1', []).run(($rootScope: angular.IScope) => {
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$rootScope['name'] = 'world';
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$rootScope['dataA'] = 'A';
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$rootScope['dataB'] = 'B';
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$rootScope['modelA'] = 'initModelA';
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$rootScope['modelB'] = 'initModelB';
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$rootScope['eventA'] = '?';
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$rootScope['eventB'] = '?';
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});
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@Component({
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selector: 'ng2',
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inputs: ['literal', 'interpolate', 'oneWayA', 'oneWayB', 'twoWayA', 'twoWayB'],
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outputs: [
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'eventA', 'eventB', 'twoWayAEmitter: twoWayAChange',
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'twoWayBEmitter: twoWayBChange'
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],
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template: 'ignore: {{ignore}}; ' +
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'literal: {{literal}}; interpolate: {{interpolate}}; ' +
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'oneWayA: {{oneWayA}}; oneWayB: {{oneWayB}}; ' +
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'twoWayA: {{twoWayA}}; twoWayB: {{twoWayB}}; ({{ngOnChangesCount}})'
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})
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class Ng2Component implements OnChanges {
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ngOnChangesCount = 0;
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ignore = '-';
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literal = '?';
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interpolate = '?';
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oneWayA = '?';
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oneWayB = '?';
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twoWayA = '?';
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twoWayB = '?';
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eventA = new EventEmitter();
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eventB = new EventEmitter();
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twoWayAEmitter = new EventEmitter();
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twoWayBEmitter = new EventEmitter();
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@Component({
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selector: 'ng2',
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inputs: ['literal', 'interpolate', 'oneWayA', 'oneWayB', 'twoWayA', 'twoWayB'],
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outputs: [
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'eventA', 'eventB', 'twoWayAEmitter: twoWayAChange', 'twoWayBEmitter: twoWayBChange'
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],
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template: 'ignore: {{ignore}}; ' +
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'literal: {{literal}}; interpolate: {{interpolate}}; ' +
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'oneWayA: {{oneWayA}}; oneWayB: {{oneWayB}}; ' +
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'twoWayA: {{twoWayA}}; twoWayB: {{twoWayB}}; ({{ngOnChangesCount}})'
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})
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class Ng2Component implements OnChanges {
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ngOnChangesCount = 0;
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ignore = '-';
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literal = '?';
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interpolate = '?';
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oneWayA = '?';
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oneWayB = '?';
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twoWayA = '?';
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twoWayB = '?';
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eventA = new EventEmitter();
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eventB = new EventEmitter();
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twoWayAEmitter = new EventEmitter();
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twoWayBEmitter = new EventEmitter();
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ngOnChanges(changes: SimpleChanges) {
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const assert = (prop: string, value: any) => {
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const propVal = (this as any)[prop];
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if (propVal != value) {
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throw new Error(`Expected: '${prop}' to be '${value}' but was '${propVal}'`);
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}
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};
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ngOnChanges(changes: SimpleChanges) {
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const assert = (prop: string, value: any) => {
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const propVal = (this as any)[prop];
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if (propVal != value) {
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throw new Error(`Expected: '${prop}' to be '${value}' but was '${propVal}'`);
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}
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};
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const assertChange = (prop: string, value: any) => {
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assert(prop, value);
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if (!changes[prop]) {
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throw new Error(`Changes record for '${prop}' not found.`);
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}
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const actualValue = changes[prop].currentValue;
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if (actualValue != value) {
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throw new Error(
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`Expected changes record for'${prop}' to be '${value}' but was '${actualValue}'`);
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}
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};
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const assertChange = (prop: string, value: any) => {
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assert(prop, value);
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if (!changes[prop]) {
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throw new Error(`Changes record for '${prop}' not found.`);
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}
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const actualValue = changes[prop].currentValue;
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if (actualValue != value) {
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throw new Error(
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`Expected changes record for'${prop}' to be '${value}' but was '${actualValue}'`);
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}
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};
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switch (this.ngOnChangesCount++) {
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case 0:
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assert('ignore', '-');
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assertChange('literal', 'Text');
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assertChange('interpolate', 'Hello world');
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assertChange('oneWayA', 'A');
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assertChange('oneWayB', 'B');
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assertChange('twoWayA', 'initModelA');
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assertChange('twoWayB', 'initModelB');
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switch (this.ngOnChangesCount++) {
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case 0:
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assert('ignore', '-');
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assertChange('literal', 'Text');
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assertChange('interpolate', 'Hello world');
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assertChange('oneWayA', 'A');
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assertChange('oneWayB', 'B');
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assertChange('twoWayA', 'initModelA');
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assertChange('twoWayB', 'initModelB');
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this.twoWayAEmitter.emit('newA');
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this.twoWayBEmitter.emit('newB');
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this.eventA.emit('aFired');
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this.eventB.emit('bFired');
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break;
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case 1:
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assertChange('twoWayA', 'newA');
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assertChange('twoWayB', 'newB');
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break;
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case 2:
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assertChange('interpolate', 'Hello everyone');
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break;
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default:
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throw new Error('Called too many times! ' + JSON.stringify(changes));
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}
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}
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}
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this.twoWayAEmitter.emit('newA');
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this.twoWayBEmitter.emit('newB');
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this.eventA.emit('aFired');
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this.eventB.emit('bFired');
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break;
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case 1:
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assertChange('twoWayA', 'newA');
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assertChange('twoWayB', 'newB');
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break;
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case 2:
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assertChange('interpolate', 'Hello everyone');
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break;
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default:
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throw new Error('Called too many times! ' + JSON.stringify(changes));
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}
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}
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}
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ng1Module.directive('ng2', downgradeComponent({
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component: Ng2Component,
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}));
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ng1Module.directive('ng2', downgradeComponent({
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component: Ng2Component,
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}));
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@NgModule({
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declarations: [Ng2Component],
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entryComponents: [Ng2Component],
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imports: [BrowserModule, UpgradeModule]
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})
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class Ng2Module {
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ngDoBootstrap() {}
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}
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@NgModule({
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declarations: [Ng2Component],
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entryComponents: [Ng2Component],
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imports: [BrowserModule, UpgradeModule]
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})
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class Ng2Module {
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ngDoBootstrap() {}
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}
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const element = html(`
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const element = html(`
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<div>
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<ng2 literal="Text" interpolate="Hello {{name}}"
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bind-one-way-a="dataA" [one-way-b]="dataB"
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@ -130,23 +128,23 @@ withEachNg1Version(() => {
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| modelA: {{modelA}}; modelB: {{modelB}}; eventA: {{eventA}}; eventB: {{eventB}};
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</div>`);
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bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then((upgrade) => {
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expect(multiTrim(document.body.textContent))
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.toEqual(
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'ignore: -; ' +
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'literal: Text; interpolate: Hello world; ' +
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'oneWayA: A; oneWayB: B; twoWayA: newA; twoWayB: newB; (2) | ' +
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'modelA: newA; modelB: newB; eventA: aFired; eventB: bFired;');
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bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then((upgrade) => {
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expect(multiTrim(document.body.textContent))
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.toEqual(
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'ignore: -; ' +
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'literal: Text; interpolate: Hello world; ' +
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'oneWayA: A; oneWayB: B; twoWayA: newA; twoWayB: newB; (2) | ' +
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'modelA: newA; modelB: newB; eventA: aFired; eventB: bFired;');
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$apply(upgrade, 'name = "everyone"');
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expect(multiTrim(document.body.textContent))
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.toEqual(
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'ignore: -; ' +
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'literal: Text; interpolate: Hello everyone; ' +
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'oneWayA: A; oneWayB: B; twoWayA: newA; twoWayB: newB; (3) | ' +
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'modelA: newA; modelB: newB; eventA: aFired; eventB: bFired;');
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});
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}));
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$apply(upgrade, 'name = "everyone"');
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expect(multiTrim(document.body.textContent))
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.toEqual(
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'ignore: -; ' +
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'literal: Text; interpolate: Hello everyone; ' +
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'oneWayA: A; oneWayB: B; twoWayA: newA; twoWayB: newB; (3) | ' +
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'modelA: newA; modelB: newB; eventA: aFired; eventB: bFired;');
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});
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}));
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it('should bind properties to onpush components', async(() => {
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const ng1Module = angular.module('ng1', []).run(
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@ -189,58 +187,57 @@ withEachNg1Version(() => {
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});
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}));
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fixmeIvy('FW-715: ngOnChanges being called a second time unexpectedly')
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.it('should support two-way binding and event listener', async(() => {
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const listenerSpy = jasmine.createSpy('$rootScope.listener');
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const ng1Module = angular.module('ng1', []).run(($rootScope: angular.IScope) => {
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$rootScope['value'] = 'world';
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$rootScope['listener'] = listenerSpy;
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});
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it('should support two-way binding and event listener', async(() => {
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const listenerSpy = jasmine.createSpy('$rootScope.listener');
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const ng1Module = angular.module('ng1', []).run(($rootScope: angular.IScope) => {
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$rootScope['value'] = 'world';
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$rootScope['listener'] = listenerSpy;
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});
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@Component({selector: 'ng2', template: `model: {{model}};`})
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class Ng2Component implements OnChanges {
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ngOnChangesCount = 0;
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@Input() model = '?';
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@Output() modelChange = new EventEmitter();
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@Component({selector: 'ng2', template: `model: {{model}};`})
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class Ng2Component implements OnChanges {
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ngOnChangesCount = 0;
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@Input() model = '?';
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@Output() modelChange = new EventEmitter();
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ngOnChanges(changes: SimpleChanges) {
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switch (this.ngOnChangesCount++) {
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case 0:
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expect(changes.model.currentValue).toBe('world');
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this.modelChange.emit('newC');
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break;
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case 1:
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expect(changes.model.currentValue).toBe('newC');
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break;
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default:
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throw new Error('Called too many times! ' + JSON.stringify(changes));
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}
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}
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}
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ngOnChanges(changes: SimpleChanges) {
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switch (this.ngOnChangesCount++) {
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case 0:
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expect(changes.model.currentValue).toBe('world');
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this.modelChange.emit('newC');
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break;
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case 1:
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expect(changes.model.currentValue).toBe('newC');
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break;
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default:
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throw new Error('Called too many times! ' + JSON.stringify(changes));
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}
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}
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}
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ng1Module.directive('ng2', downgradeComponent({component: Ng2Component}));
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ng1Module.directive('ng2', downgradeComponent({component: Ng2Component}));
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@NgModule({
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declarations: [Ng2Component],
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entryComponents: [Ng2Component],
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imports: [BrowserModule, UpgradeModule]
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})
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class Ng2Module {
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ngDoBootstrap() {}
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}
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@NgModule({
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declarations: [Ng2Component],
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entryComponents: [Ng2Component],
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imports: [BrowserModule, UpgradeModule]
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})
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class Ng2Module {
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ngDoBootstrap() {}
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}
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const element = html(`
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const element = html(`
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<div>
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<ng2 [(model)]="value" (model-change)="listener($event)"></ng2>
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| value: {{value}}
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</div>
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`);
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bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then((upgrade) => {
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expect(multiTrim(element.textContent)).toEqual('model: newC; | value: newC');
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expect(listenerSpy).toHaveBeenCalledWith('newC');
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});
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}));
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bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then((upgrade) => {
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expect(multiTrim(element.textContent)).toEqual('model: newC; | value: newC');
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expect(listenerSpy).toHaveBeenCalledWith('newC');
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});
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}));
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it('should run change-detection on every digest (by default)', async(() => {
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let ng2Component: Ng2Component;
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@ -404,66 +401,65 @@ withEachNg1Version(() => {
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});
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}));
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fixmeIvy('FW-715: ngOnChanges being called a second time unexpectedly')
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.it('should initialize inputs in time for `ngOnChanges`', async(() => {
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@Component({
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selector: 'ng2',
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template: `
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it('should initialize inputs in time for `ngOnChanges`', async(() => {
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@Component({
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selector: 'ng2',
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template: `
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ngOnChangesCount: {{ ngOnChangesCount }} |
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firstChangesCount: {{ firstChangesCount }} |
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initialValue: {{ initialValue }}`
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})
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class Ng2Component implements OnChanges {
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ngOnChangesCount = 0;
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firstChangesCount = 0;
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// TODO(issue/24571): remove '!'.
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initialValue !: string;
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// TODO(issue/24571): remove '!'.
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@Input() foo !: string;
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})
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class Ng2Component implements OnChanges {
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ngOnChangesCount = 0;
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firstChangesCount = 0;
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// TODO(issue/24571): remove '!'.
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initialValue !: string;
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// TODO(issue/24571): remove '!'.
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@Input() foo !: string;
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ngOnChanges(changes: SimpleChanges) {
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this.ngOnChangesCount++;
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ngOnChanges(changes: SimpleChanges) {
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this.ngOnChangesCount++;
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if (this.ngOnChangesCount === 1) {
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this.initialValue = this.foo;
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}
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if (this.ngOnChangesCount === 1) {
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this.initialValue = this.foo;
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}
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if (changes['foo'] && changes['foo'].isFirstChange()) {
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this.firstChangesCount++;
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}
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}
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}
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if (changes['foo'] && changes['foo'].isFirstChange()) {
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this.firstChangesCount++;
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}
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}
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}
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@NgModule({
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imports: [BrowserModule, UpgradeModule],
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declarations: [Ng2Component],
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entryComponents: [Ng2Component]
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})
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class Ng2Module {
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ngDoBootstrap() {}
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}
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@NgModule({
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imports: [BrowserModule, UpgradeModule],
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declarations: [Ng2Component],
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entryComponents: [Ng2Component]
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})
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class Ng2Module {
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ngDoBootstrap() {}
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}
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const ng1Module = angular.module('ng1', []).directive(
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'ng2', downgradeComponent({component: Ng2Component}));
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const ng1Module = angular.module('ng1', []).directive(
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'ng2', downgradeComponent({component: Ng2Component}));
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const element = html(`
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const element = html(`
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<ng2 [foo]="'foo'"></ng2>
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<ng2 foo="bar"></ng2>
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<ng2 [foo]="'baz'" ng-if="true"></ng2>
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<ng2 foo="qux" ng-if="true"></ng2>
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`);
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bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then(upgrade => {
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const nodes = element.querySelectorAll('ng2');
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const expectedTextWith = (value: string) =>
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`ngOnChangesCount: 1 | firstChangesCount: 1 | initialValue: ${value}`;
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bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then(upgrade => {
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const nodes = element.querySelectorAll('ng2');
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const expectedTextWith = (value: string) =>
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`ngOnChangesCount: 1 | firstChangesCount: 1 | initialValue: ${value}`;
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expect(multiTrim(nodes[0].textContent)).toBe(expectedTextWith('foo'));
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expect(multiTrim(nodes[1].textContent)).toBe(expectedTextWith('bar'));
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expect(multiTrim(nodes[2].textContent)).toBe(expectedTextWith('baz'));
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expect(multiTrim(nodes[3].textContent)).toBe(expectedTextWith('qux'));
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});
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}));
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expect(multiTrim(nodes[0].textContent)).toBe(expectedTextWith('foo'));
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expect(multiTrim(nodes[1].textContent)).toBe(expectedTextWith('bar'));
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expect(multiTrim(nodes[2].textContent)).toBe(expectedTextWith('baz'));
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expect(multiTrim(nodes[3].textContent)).toBe(expectedTextWith('qux'));
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});
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}));
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it('should bind to ng-model', async(() => {
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const ng1Module = angular.module('ng1', []).run(
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Reference in New Issue
Block a user