test(material/select): add disabled harness filter (#26230)

* test(material/select): add disabled harness filter

* fixup! test(material/select): add disabled harness filter

* fixup! test(material/select): add disabled harness filter

(cherry picked from commit 81922a9)

Author: wagnermaciel

src/material/legacy-select/testing/select-harness-filters.ts

@@ -13,4 +13,7 @@ import {BaseHarnessFilters} from '@angular/cdk/testing';
  * @deprecated Use `SelectHarnessFilters` from `@angular/material/select/testing` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.
  * @breaking-change 17.0.0
  */
-export interface LegacySelectHarnessFilters extends BaseHarnessFilters {}
+export interface LegacySelectHarnessFilters extends BaseHarnessFilters {
+  /** Only find instances which match the given disabled state. */
+  disabled?: boolean;
+}

src/material/legacy-select/testing/select-harness.ts

@@ -41,6 +41,12 @@ export class MatLegacySelectHarness extends _MatSelectHarnessBase<
    * @return a `HarnessPredicate` configured with the given options.
    */
   static with(options: LegacySelectHarnessFilters = {}): HarnessPredicate<MatLegacySelectHarness> {
-    return new HarnessPredicate(MatLegacySelectHarness, options);
+    return new HarnessPredicate(MatLegacySelectHarness, options).addOption(
+      'disabled',
+      options.disabled,
+      async (harness, disabled) => {
+        return (await harness.isDisabled()) === disabled;
+      },
+    );
   }
 }

src/material/select/testing/select-harness-filters.ts

@@ -9,4 +9,7 @@
 import {BaseHarnessFilters} from '@angular/cdk/testing';
 
 /** A set of criteria that can be used to filter a list of `MatSelectHarness` instances. */
-export interface SelectHarnessFilters extends BaseHarnessFilters {}
+export interface SelectHarnessFilters extends BaseHarnessFilters {
+  /** Only find instances which match the given disabled state. */
+  disabled?: boolean;
+}

src/material/select/testing/select-harness.ts

@@ -182,6 +182,12 @@ export class MatSelectHarness extends _MatSelectHarnessBase<
     this: ComponentHarnessConstructor<T>,
     options: SelectHarnessFilters = {},
   ): HarnessPredicate<T> {
-    return new HarnessPredicate(this, options);
+    return new HarnessPredicate(this, options).addOption(
+      'disabled',
+      options.disabled,
+      async (harness, disabled) => {
+        return (await harness.isDisabled()) === disabled;
+      },
+    );
   }
 }

src/material/select/testing/shared.spec.ts

@@ -44,6 +44,23 @@ export function runHarnessTests(
     expect(selects.length).toBe(4);
   });
 
+  it('should filter by whether a select is disabled', async () => {
+    let enabledSelects = await loader.getAllHarnesses(selectHarness.with({disabled: false}));
+    let disabledSelects = await loader.getAllHarnesses(selectHarness.with({disabled: true}));
+
+    expect(enabledSelects.length).toBe(4);
+    expect(disabledSelects.length).toBe(0);
+
+    fixture.componentInstance.isDisabled = true;
+    fixture.detectChanges();
+
+    enabledSelects = await loader.getAllHarnesses(selectHarness.with({disabled: false}));
+    disabledSelects = await loader.getAllHarnesses(selectHarness.with({disabled: true}));
+
+    expect(enabledSelects.length).toBe(3);
+    expect(disabledSelects.length).toBe(1);
+  });
+
   it('should be able to check whether a select is in multi-selection mode', async () => {
     const singleSelection = await loader.getHarness(
       selectHarness.with({

tools/public_api_guard/material/legacy-select-testing.md

@@ -14,6 +14,7 @@ import { _MatSelectHarnessBase } from '@angular/material/select/testing';
 
 // @public @deprecated
 export interface LegacySelectHarnessFilters extends BaseHarnessFilters {
+    disabled?: boolean;
 }
 
 // @public @deprecated

tools/public_api_guard/material/select-testing.md

@@ -60,6 +60,7 @@ export abstract class _MatSelectHarnessBase<OptionType extends ComponentHarnessC
 
 // @public
 export interface SelectHarnessFilters extends BaseHarnessFilters {
+    disabled?: boolean;
 }
 
 // (No @packageDocumentation comment for this package)