build: fix autocomplete CI failure (#24226)

Fixes a couple of failures that made it through due to an old PR.

(cherry picked from commit 63d4b73)

src/material-experimental/mdc-autocomplete/autocomplete.spec.ts

@@ -1101,8 +1101,10 @@ describe('MDC-based MatAutocomplete', () => {
 
       expect(trigger.panelOpen).toBe(true, 'Expected panel to remain open.');
       expect(input.value).toBeFalsy('Expected input to remain blank.');
-      expect(ENTER_EVENT.defaultPrevented)
-          .toBe(false, 'Expected the default ENTER action not to have been prevented.');
+      expect(ENTER_EVENT.defaultPrevented).toBe(
+        false,
+        'Expected the default ENTER action not to have been prevented.',
+      );
     }));
 
     it('should fill the text field, not select an option, when SPACE is entered', () => {
@@ -2868,6 +2870,29 @@ describe('MDC-based MatAutocomplete', () => {
     expect(event.option.value).toBe('Washington');
   }));
 
+  it('should refocus the input after the selection event is emitted', fakeAsync(() => {
+    const events: string[] = [];
+    const fixture = createComponent(AutocompleteWithSelectEvent);
+    fixture.detectChanges();
+    const input = fixture.nativeElement.querySelector('input');
+
+    fixture.componentInstance.trigger.openPanel();
+    zone.simulateZoneExit();
+    fixture.detectChanges();
+
+    const options = overlayContainerElement.querySelectorAll(
+      'mat-option',
+    ) as NodeListOf<HTMLElement>;
+    spyOn(input, 'focus').and.callFake(() => events.push('focus'));
+    fixture.componentInstance.optionSelected.and.callFake(() => events.push('select'));
+
+    options[1].click();
+    tick();
+    fixture.detectChanges();
+
+    expect(events).toEqual(['select', 'focus']);
+  }));
+
   it('should emit an event when a newly-added option is selected', fakeAsync(() => {
     let fixture = createComponent(AutocompleteWithSelectEvent);
 

src/material/autocomplete/autocomplete-trigger.ts

@@ -316,7 +316,7 @@ export abstract class _MatAutocompleteTriggerBase
     if (options) {
       return options.changes.pipe(
         startWith(options),
-        switchMap(() => merge(...options.map(option => option.onSelectionChange)))
+        switchMap(() => merge(...options.map(option => option.onSelectionChange))),
       );
     }
 

src/material/autocomplete/autocomplete.spec.ts

@@ -1097,8 +1097,10 @@ describe('MatAutocomplete', () => {
 
       expect(trigger.panelOpen).toBe(true, 'Expected panel to remain open.');
       expect(input.value).toBeFalsy('Expected input to remain blank.');
-      expect(ENTER_EVENT.defaultPrevented)
-          .toBe(false, 'Expected the default ENTER action not to have been prevented.');
+      expect(ENTER_EVENT.defaultPrevented).toBe(
+        false,
+        'Expected the default ENTER action not to have been prevented.',
+      );
     }));
 
     it('should fill the text field, not select an option, when SPACE is entered', () => {
@@ -2882,8 +2884,9 @@ describe('MatAutocomplete', () => {
     zone.simulateZoneExit();
     fixture.detectChanges();
 
-    const options =
-        overlayContainerElement.querySelectorAll('mat-option') as NodeListOf<HTMLElement>;
+    const options = overlayContainerElement.querySelectorAll(
+      'mat-option',
+    ) as NodeListOf<HTMLElement>;
     spyOn(input, 'focus').and.callFake(() => events.push('focus'));
     fixture.componentInstance.optionSelected.and.callFake(() => events.push('select'));