{"version":3,"file":"testing.mjs","sources":["../../../../../../../src/material/select/testing/select-harness.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {\n  BaseHarnessFilters,\n  ComponentHarness,\n  ComponentHarnessConstructor,\n  HarnessPredicate,\n  parallel,\n} from '@angular/cdk/testing';\nimport {\n  MatOptionHarness,\n  MatOptgroupHarness,\n  OptionHarnessFilters,\n  OptgroupHarnessFilters,\n} from '@angular/material/core/testing';\nimport {MatFormFieldControlHarness} from '@angular/material/form-field/testing/control';\nimport {SelectHarnessFilters} from './select-harness-filters';\n\nexport abstract class _MatSelectHarnessBase<\n  OptionType extends ComponentHarnessConstructor<Option> & {\n    with: (options?: OptionFilters) => HarnessPredicate<Option>;\n  },\n  Option extends ComponentHarness & {click(): Promise<void>},\n  OptionFilters extends BaseHarnessFilters,\n  OptionGroupType extends ComponentHarnessConstructor<OptionGroup> & {\n    with: (options?: OptionGroupFilters) => HarnessPredicate<OptionGroup>;\n  },\n  OptionGroup extends ComponentHarness,\n  OptionGroupFilters extends BaseHarnessFilters,\n> extends MatFormFieldControlHarness {\n  protected abstract _prefix: string;\n  protected abstract _optionClass: OptionType;\n  protected abstract _optionGroupClass: OptionGroupType;\n  private _documentRootLocator = this.documentRootLocatorFactory();\n  private _backdrop = this._documentRootLocator.locatorFor('.cdk-overlay-backdrop');\n\n  /** Gets a boolean promise indicating if the select is disabled. */\n  async isDisabled(): Promise<boolean> {\n    return (await this.host()).hasClass(`${this._prefix}-select-disabled`);\n  }\n\n  /** Gets a boolean promise indicating if the select is valid. */\n  async isValid(): Promise<boolean> {\n    return !(await (await this.host()).hasClass('ng-invalid'));\n  }\n\n  /** Gets a boolean promise indicating if the select is required. */\n  async isRequired(): Promise<boolean> {\n    return (await this.host()).hasClass(`${this._prefix}-select-required`);\n  }\n\n  /** Gets a boolean promise indicating if the select is empty (no value is selected). */\n  async isEmpty(): Promise<boolean> {\n    return (await this.host()).hasClass(`${this._prefix}-select-empty`);\n  }\n\n  /** Gets a boolean promise indicating if the select is in multi-selection mode. */\n  async isMultiple(): Promise<boolean> {\n    return (await this.host()).hasClass(`${this._prefix}-select-multiple`);\n  }\n\n  /** Gets a promise for the select's value text. */\n  async getValueText(): Promise<string> {\n    const value = await this.locatorFor(`.${this._prefix}-select-value`)();\n    return value.text();\n  }\n\n  /** Focuses the select and returns a void promise that indicates when the action is complete. */\n  async focus(): Promise<void> {\n    return (await this.host()).focus();\n  }\n\n  /** Blurs the select and returns a void promise that indicates when the action is complete. */\n  async blur(): Promise<void> {\n    return (await this.host()).blur();\n  }\n\n  /** Whether the select is focused. */\n  async isFocused(): Promise<boolean> {\n    return (await this.host()).isFocused();\n  }\n\n  /** Gets the options inside the select panel. */\n  async getOptions(filter?: Omit<OptionFilters, 'ancestor'>): Promise<Option[]> {\n    return this._documentRootLocator.locatorForAll(\n      this._optionClass.with({\n        ...(filter || {}),\n        ancestor: await this._getPanelSelector(),\n      } as OptionFilters),\n    )();\n  }\n\n  /** Gets the groups of options inside the panel. */\n  async getOptionGroups(filter?: Omit<OptionGroupFilters, 'ancestor'>): Promise<OptionGroup[]> {\n    return this._documentRootLocator.locatorForAll(\n      this._optionGroupClass.with({\n        ...(filter || {}),\n        ancestor: await this._getPanelSelector(),\n      } as OptionGroupFilters),\n    )() as Promise<OptionGroup[]>;\n  }\n\n  /** Gets whether the select is open. */\n  async isOpen(): Promise<boolean> {\n    return !!(await this._documentRootLocator.locatorForOptional(await this._getPanelSelector())());\n  }\n\n  /** Opens the select's panel. */\n  async open(): Promise<void> {\n    if (!(await this.isOpen())) {\n      const trigger = await this.locatorFor(`.${this._prefix}-select-trigger`)();\n      return trigger.click();\n    }\n  }\n\n  /**\n   * Clicks the options that match the passed-in filter. If the select is in multi-selection\n   * mode all options will be clicked, otherwise the harness will pick the first matching option.\n   */\n  async clickOptions(filter?: OptionFilters): Promise<void> {\n    await this.open();\n\n    const [isMultiple, options] = await parallel(() => [\n      this.isMultiple(),\n      this.getOptions(filter),\n    ]);\n\n    if (options.length === 0) {\n      throw Error('Select does not have options matching the specified filter');\n    }\n\n    if (isMultiple) {\n      await parallel(() => options.map(option => option.click()));\n    } else {\n      await options[0].click();\n    }\n  }\n\n  /** Closes the select's panel. */\n  async close(): Promise<void> {\n    if (await this.isOpen()) {\n      // This is the most consistent way that works both in both single and multi-select modes,\n      // but it assumes that only one overlay is open at a time. We should be able to make it\n      // a bit more precise after #16645 where we can dispatch an ESCAPE press to the host instead.\n      return (await this._backdrop()).click();\n    }\n  }\n\n  /** Gets the selector that should be used to find this select's panel. */\n  private async _getPanelSelector(): Promise<string> {\n    const id = await (await this.host()).getAttribute('id');\n    return `#${id}-panel`;\n  }\n}\n\n/** Harness for interacting with an MDC-based mat-select in tests. */\nexport class MatSelectHarness extends _MatSelectHarnessBase<\n  typeof MatOptionHarness,\n  MatOptionHarness,\n  OptionHarnessFilters,\n  typeof MatOptgroupHarness,\n  MatOptgroupHarness,\n  OptgroupHarnessFilters\n> {\n  static hostSelector = '.mat-mdc-select';\n  protected _prefix = 'mat-mdc';\n  protected _optionClass = MatOptionHarness;\n  protected _optionGroupClass = MatOptgroupHarness;\n\n  /**\n   * Gets a `HarnessPredicate` that can be used to search for a select with specific attributes.\n   * @param options Options for filtering which select instances are considered a match.\n   * @return a `HarnessPredicate` configured with the given options.\n   */\n  static with<T extends MatSelectHarness>(\n    this: ComponentHarnessConstructor<T>,\n    options: SelectHarnessFilters = {},\n  ): HarnessPredicate<T> {\n    return new HarnessPredicate(this, options).addOption(\n      'disabled',\n      options.disabled,\n      async (harness, disabled) => {\n        return (await harness.isDisabled()) === disabled;\n      },\n    );\n  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