test(chips): add performance tests for mat-chips (#19550)

Author: wagnermaciel

test/benchmarks/material/chips/BUILD.bazel

@@ -0,0 +1,22 @@
+load("@npm_angular_dev_infra_private//benchmark/component_benchmark:component_benchmark.bzl", "component_benchmark")
+
+# TODO(wagnermaciel): Update this target to provide indigo-pink in a way that doesn't require having to import it with
+# stylesUrls inside the components once `component_benchmark` supports asset injection.
+
+component_benchmark(
+    name = "benchmark",
+    driver = ":chips.perf-spec.ts",
+    driver_deps = [
+        "@npm//@angular/dev-infra-private",
+        "@npm//protractor",
+        "@npm//@types/jasmine",
+    ],
+    ng_deps = [
+        "@npm//@angular/core",
+        "@npm//@angular/platform-browser",
+        "//src/material/chips",
+    ],
+    ng_srcs = [":app.module.ts"],
+    prefix = "",
+    styles = ["//src/material/prebuilt-themes:indigo-pink"],
+)

test/benchmarks/material/chips/app.module.ts

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+/**
+ * @license
+ * Copyright Google LLC 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 {Component, NgModule, ViewEncapsulation} from '@angular/core';
+import {BrowserModule} from '@angular/platform-browser';
+import {MatChipsModule} from '@angular/material/chips';
+
+@Component({
+  selector: 'app-root',
+  template: `
+    <button id="show-single" (click)="showSingle()">Show Single</button>
+    <button id="hide-single" (click)="hideSingle()">Hide Single</button>
+
+    <button id="show-multiple" (click)="showMultiple()">Show Multiple</button>
+    <button id="hide-multiple" (click)="hideMultiple()">Hide Multiple</button>
+
+    <mat-chip *ngIf="isSingleVisible">One</mat-chip>
+
+    <mat-chip-list *ngIf="isMultipleVisible">
+      <mat-chip>One</mat-chip>
+      <mat-chip>Two</mat-chip>
+      <mat-chip>Three</mat-chip>
+      <mat-chip>Four</mat-chip>
+      <mat-chip>Five</mat-chip>
+      <mat-chip>Six</mat-chip>
+    </mat-chip-list>
+  `,
+  encapsulation: ViewEncapsulation.None,
+  styleUrls: ['//src/material/core/theming/prebuilt/indigo-pink.css'],
+})
+export class ChipsBenchmarkApp {
+  isSingleVisible = false;
+  isMultipleVisible = false;
+
+  showSingle() { this.isSingleVisible = true; }
+  hideSingle() { this.isSingleVisible = false; }
+
+  showMultiple() { this.isMultipleVisible = true; }
+  hideMultiple() { this.isMultipleVisible = false; }
+}
+
+
+@NgModule({
+  declarations: [ChipsBenchmarkApp],
+  imports: [
+    BrowserModule,
+    MatChipsModule,
+  ],
+  providers: [],
+  bootstrap: [ChipsBenchmarkApp],
+})
+export class AppModule {}

test/benchmarks/material/chips/chips.perf-spec.ts

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+/**
+ * @license
+ * Copyright Google LLC 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 {$, browser} from 'protractor';
+import {runBenchmark} from '@angular/dev-infra-private/benchmark/driver-utilities';
+
+describe('chip performance benchmarks', () => {
+  beforeAll(() => {
+    browser.rootEl = '#root';
+  });
+
+  it('renders a single chip', async() => {
+    await runBenchmark({
+      id: 'single-chip-render',
+      url: '',
+      ignoreBrowserSynchronization: true,
+      params: [],
+      prepare: async () => await $('#hide-single').click(),
+      work: async () => await $('#show-single').click(),
+    });
+  });
+
+  it('renders multiple chips', async() => {
+    await runBenchmark({
+      id: 'multiple-chip-render',
+      url: '',
+      ignoreBrowserSynchronization: true,
+      params: [],
+      prepare: async () => await $('#hide-multiple').click(),
+      work: async () => await $('#show-multiple').click(),
+    });
+  });
+
+  it('clicks a chip', async() => {
+    await runBenchmark({
+      id: 'chip-click',
+      url: '',
+      ignoreBrowserSynchronization: true,
+      params: [],
+      setup: async() => await $('#show-single').click(),
+      work: async () => await $('.mat-chip').click(),
+    });
+  });
+});