@angular/material
Version:
Angular Material
57 lines • 7.86 kB
JavaScript
/**
* @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 { ComponentHarness, HarnessPredicate, parallel } from '@angular/cdk/testing';
import { MatTabHarness } from './tab-harness';
/** Harness for interacting with a standard mat-tab-group in tests. */
export class MatTabGroupHarness extends ComponentHarness {
/**
* Gets a `HarnessPredicate` that can be used to search for a `MatTabGroupHarness` that meets
* certain criteria.
* @param options Options for filtering which tab group instances are considered a match.
* @return a `HarnessPredicate` configured with the given options.
*/
static with(options = {}) {
return new HarnessPredicate(MatTabGroupHarness, options).addOption('selectedTabLabel', options.selectedTabLabel, async (harness, label) => {
const selectedTab = await harness.getSelectedTab();
return HarnessPredicate.stringMatches(await selectedTab.getLabel(), label);
});
}
/**
* Gets the list of tabs in the tab group.
* @param filter Optionally filters which tabs are included.
*/
async getTabs(filter = {}) {
return this.locatorForAll(MatTabHarness.with(filter))();
}
/** Gets the selected tab of the tab group. */
async getSelectedTab() {
const tabs = await this.getTabs();
const isSelected = await parallel(() => tabs.map(t => t.isSelected()));
for (let i = 0; i < tabs.length; i++) {
if (isSelected[i]) {
return tabs[i];
}
}
throw new Error('No selected tab could be found.');
}
/**
* Selects a tab in this tab group.
* @param filter An optional filter to apply to the child tabs. The first tab matching the filter
* will be selected.
*/
async selectTab(filter = {}) {
const tabs = await this.getTabs(filter);
if (!tabs.length) {
throw Error(`Cannot find mat-tab matching filter ${JSON.stringify(filter)}`);
}
await tabs[0].select();
}
}
/** The selector for the host element of a `MatTabGroup` instance. */
MatTabGroupHarness.hostSelector = '.mat-tab-group';
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