@angular/material
Version:
Angular Material
101 lines • 13.1 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 { ContentContainerComponentHarness, HarnessPredicate, parallel } from '@angular/cdk/testing';
/** Harness for interacting with a mat-snack-bar in tests. */
export class MatSnackBarHarness extends ContentContainerComponentHarness {
constructor() {
super(...arguments);
this._messageSelector = '.mdc-snackbar__label';
this._actionButtonSelector = '.mat-mdc-snack-bar-action';
this._snackBarLiveRegion = this.locatorFor('[aria-live]');
}
// Developers can provide a custom component or template for the
// snackbar. The canonical snack-bar parent is the "MatSnackBarContainer".
/** The selector for the host element of a `MatSnackBar` instance. */
static { this.hostSelector = '.mat-mdc-snack-bar-container:not([mat-exit])'; }
/**
* Gets a `HarnessPredicate` that can be used to search for a `MatSnackBarHarness` that meets
* certain criteria.
* @param options Options for filtering which snack bar instances are considered a match.
* @return a `HarnessPredicate` configured with the given options.
*/
static with(options = {}) {
return new HarnessPredicate(MatSnackBarHarness, options);
}
/**
* Gets the role of the snack-bar. The role of a snack-bar is determined based
* on the ARIA politeness specified in the snack-bar config.
* @deprecated Use `getAriaLive` instead.
* @breaking-change 13.0.0
*/
async getRole() {
return (await this.host()).getAttribute('role');
}
/**
* Gets the aria-live of the snack-bar's live region. The aria-live of a snack-bar is
* determined based on the ARIA politeness specified in the snack-bar config.
*/
async getAriaLive() {
return (await this._snackBarLiveRegion()).getAttribute('aria-live');
}
/**
* Whether the snack-bar has an action. Method cannot be used for snack-bar's with custom content.
*/
async hasAction() {
return (await this._getActionButton()) !== null;
}
/**
* Gets the description of the snack-bar. Method cannot be used for snack-bar's without action or
* with custom content.
*/
async getActionDescription() {
await this._assertHasAction();
return (await this._getActionButton()).text();
}
/**
* Dismisses the snack-bar by clicking the action button. Method cannot be used for snack-bar's
* without action or with custom content.
*/
async dismissWithAction() {
await this._assertHasAction();
await (await this._getActionButton()).click();
}
/**
* Gets the message of the snack-bar. Method cannot be used for snack-bar's with custom content.
*/
async getMessage() {
return (await this.locatorFor(this._messageSelector)()).text();
}
/** Gets whether the snack-bar has been dismissed. */
async isDismissed() {
// We consider the snackbar dismissed if it's not in the DOM. We can assert that the
// element isn't in the DOM by seeing that its width and height are zero.
const host = await this.host();
const [exit, dimensions] = await parallel(() => [
// The snackbar container is marked with the "exit" attribute after it has been dismissed
// but before the animation has finished (after which it's removed from the DOM).
host.getAttribute('mat-exit'),
host.getDimensions(),
]);
return exit != null || (!!dimensions && dimensions.height === 0 && dimensions.width === 0);
}
/**
* Asserts that the current snack-bar has an action defined. Otherwise the
* promise will reject.
*/
async _assertHasAction() {
if (!(await this.hasAction())) {
throw Error('Method cannot be used for a snack-bar without an action.');
}
}
/** Gets the simple snack bar action button. */
async _getActionButton() {
return this.locatorForOptional(this._actionButtonSelector)();
}
}
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The canonical snack-bar parent is the \"MatSnackBarContainer\".\n  /** The selector for the host element of a `MatSnackBar` instance. */\n  static hostSelector = '.mat-mdc-snack-bar-container:not([mat-exit])';\n  private _messageSelector = '.mdc-snackbar__label';\n  private _actionButtonSelector = '.mat-mdc-snack-bar-action';\n\n  private _snackBarLiveRegion = this.locatorFor('[aria-live]');\n\n  /**\n   * Gets a `HarnessPredicate` that can be used to search for a `MatSnackBarHarness` that meets\n   * certain criteria.\n   * @param options Options for filtering which snack bar instances are considered a match.\n   * @return a `HarnessPredicate` configured with the given options.\n   */\n  static with(options: SnackBarHarnessFilters = {}): HarnessPredicate<MatSnackBarHarness> {\n    return new HarnessPredicate(MatSnackBarHarness, options);\n  }\n\n  /**\n   * Gets the role of the snack-bar. The role of a snack-bar is determined based\n   * on the ARIA politeness specified in the snack-bar config.\n   * @deprecated Use `getAriaLive` instead.\n   * @breaking-change 13.0.0\n   */\n  async getRole(): Promise<'alert' | 'status' | null> {\n    return (await this.host()).getAttribute('role') as Promise<'alert' | 'status' | null>;\n  }\n\n  /**\n   * Gets the aria-live of the snack-bar's live region. The aria-live of a snack-bar is\n   * determined based on the ARIA politeness specified in the snack-bar config.\n   */\n  async getAriaLive(): Promise<AriaLivePoliteness> {\n    return (await this._snackBarLiveRegion()).getAttribute(\n      'aria-live',\n    ) as Promise<AriaLivePoliteness>;\n  }\n\n  /**\n   * Whether the snack-bar has an action. Method cannot be used for snack-bar's with custom content.\n   */\n  async hasAction(): Promise<boolean> {\n    return (await this._getActionButton()) !== null;\n  }\n\n  /**\n   * Gets the description of the snack-bar. Method cannot be used for snack-bar's without action or\n   * with custom content.\n   */\n  async getActionDescription(): Promise<string> {\n    await this._assertHasAction();\n    return (await this._getActionButton())!.text();\n  }\n\n  /**\n   * Dismisses the snack-bar by clicking the action button. Method cannot be used for snack-bar's\n   * without action or with custom content.\n   */\n  async dismissWithAction(): Promise<void> {\n    await this._assertHasAction();\n    await (await this._getActionButton())!.click();\n  }\n\n  /**\n   * Gets the message of the snack-bar. Method cannot be used for snack-bar's with custom content.\n   */\n  async getMessage(): Promise<string> {\n    return (await this.locatorFor(this._messageSelector)()).text();\n  }\n\n  /** Gets whether the snack-bar has been dismissed. */\n  async isDismissed(): Promise<boolean> {\n    // We consider the snackbar dismissed if it's not in the DOM. We can assert that the\n    // element isn't in the DOM by seeing that its width and height are zero.\n\n    const host = await this.host();\n    const [exit, dimensions] = await parallel(() => [\n      // The snackbar container is marked with the \"exit\" attribute after it has been dismissed\n      // but before the animation has finished (after which it's removed from the DOM).\n      host.getAttribute('mat-exit'),\n      host.getDimensions(),\n    ]);\n\n    return exit != null || (!!dimensions && dimensions.height === 0 && dimensions.width === 0);\n  }\n\n  /**\n   * Asserts that the current snack-bar has an action defined. Otherwise the\n   * promise will reject.\n   */\n  private async _assertHasAction(): Promise<void> {\n    if (!(await this.hasAction())) {\n      throw Error('Method cannot be used for a snack-bar without an action.');\n    }\n  }\n\n  /** Gets the simple snack bar action button. */\n  private async _getActionButton() {\n    return this.locatorForOptional(this._actionButtonSelector)();\n  }\n}\n"]}