automatically focus the input when calling selectOption

Author: mmalerba

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

@@ -82,9 +82,7 @@ export class MatAutocompleteHarness extends ComponentHarness {
 
   /** Selects the first options matching the given filters. */
   async selectOption(filters: OptionHarnessFilters = {}): Promise<void> {
-    if (!await this.isOpen()) {
-      throw Error('mat-autocomplete dropdown must be open to select an option');
-    }
+    await this.focus(); // Focus the input to make sure the autocomplete panel is shown.
     const options = await this.getOptions(filters);
     if (!options.length) {
       throw Error(`Could not find a mat-option matching ${JSON.stringify(filters)}`);

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

@@ -124,17 +124,10 @@ export function runHarnessTests(
 
   it('should be able to select option', async () => {
     const input = await loader.getHarness(autocompleteHarness.with({selector: '#plain'}));
-    await input.enterText('New');
     await input.selectOption({text: 'New York'});
     expect(await input.getValue()).toBe('NY');
   });
 
-  it('should throw when selecting an option if autocomplete is not open', async () => {
-    const input = await loader.getHarness(autocompleteHarness.with({selector: '#plain'}));
-    await expectAsyncError(() => input.selectOption({text: 'New York'}),
-        /mat-autocomplete dropdown must be open to select an option/);
-  });
-
   it('should throw when selecting an option that is not available', async () => {
     const input = await loader.getHarness(autocompleteHarness.with({selector: '#plain'}));
     await input.enterText('New');