fix(cdk/a11y): fix tests

Author: BobobUnicorn

src/cdk/a11y/key-manager/list-key-manager.spec.ts

@@ -150,6 +150,7 @@ describe('Key managers', () => {
 
         keyManager.setActiveItem(0);
         itemList.reset([new FakeFocusable('zero'), ...itemList.toArray()]);
+        itemList.notifyOnChanges();
         keyManager.setActiveItem(0);
 
         expect(spy).toHaveBeenCalledTimes(1);
@@ -342,6 +343,7 @@ describe('Key managers', () => {
           const items = itemList.toArray();
           items[1].disabled = true;
           itemList.reset(items);
+          itemList.notifyOnChanges();
 
           // Next event should skip past disabled item from 0 to 2
           keyManager.onKeydown(this.nextKeyEvent);
@@ -367,6 +369,7 @@ describe('Key managers', () => {
           items[1].disabled = undefined;
           items[2].disabled = undefined;
           itemList.reset(items);
+          itemList.notifyOnChanges();
 
           keyManager.onKeydown(this.nextKeyEvent);
           expect(keyManager.activeItemIndex)
@@ -416,6 +419,7 @@ describe('Key managers', () => {
           const items = itemList.toArray();
           items[2].disabled = true;
           itemList.reset(items);
+          itemList.notifyOnChanges();
 
           keyManager.onKeydown(this.nextKeyEvent);
           expect(keyManager.activeItemIndex)
@@ -558,6 +562,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[0].disabled = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         keyManager.setFirstItemActive();
         expect(keyManager.activeItemIndex)
@@ -580,6 +585,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[2].disabled = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         keyManager.setLastItemActive();
         expect(keyManager.activeItemIndex)
@@ -602,6 +608,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[1].disabled = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         expect(keyManager.activeItemIndex)
           .withContext(`Expected first item of the list to be active.`)
@@ -629,6 +636,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[1].disabled = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         keyManager.onKeydown(fakeKeyEvents.downArrow);
         keyManager.onKeydown(fakeKeyEvents.downArrow);
@@ -706,6 +714,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items.forEach(item => (item.disabled = true));
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         keyManager.onKeydown(fakeKeyEvents.downArrow);
       });
@@ -730,6 +739,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[1].disabled = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         expect(keyManager.activeItemIndex).toBe(0);
 
@@ -744,6 +754,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[1].skipItem = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         expect(keyManager.activeItemIndex).toBe(0);
 
@@ -839,6 +850,7 @@ describe('Key managers', () => {
           new FakeFocusable('две'),
           new FakeFocusable('три'),
         ]);
+        itemList.notifyOnChanges();
 
         const keyboardEvent = createKeyboardEvent('keydown', 68, 'д');
 
@@ -854,6 +866,7 @@ describe('Key managers', () => {
           new FakeFocusable('321'),
           new FakeFocusable('`!?'),
         ]);
+        itemList.notifyOnChanges();
 
         keyManager.onKeydown(createKeyboardEvent('keydown', 192, '`')); // types "`"
         tick(debounceInterval);
@@ -874,6 +887,7 @@ describe('Key managers', () => {
         const items = itemList.toArray();
         items[0].disabled = true;
         itemList.reset(items);
+        itemList.notifyOnChanges();
 
         keyManager.onKeydown(createKeyboardEvent('keydown', 79, 'o')); // types "o"
         tick(debounceInterval);
@@ -889,6 +903,7 @@ describe('Key managers', () => {
           new FakeFocusable('Boromir'),
           new FakeFocusable('Aragorn'),
         ]);
+        itemList.notifyOnChanges();
 
         keyManager.setActiveItem(1);
         keyManager.onKeydown(createKeyboardEvent('keydown', 66, 'b'));
@@ -905,6 +920,7 @@ describe('Key managers', () => {
           new FakeFocusable('Boromir'),
           new FakeFocusable('Aragorn'),
         ]);
+        itemList.notifyOnChanges();
 
         keyManager.setActiveItem(3);
         keyManager.onKeydown(createKeyboardEvent('keydown', 66, 'b'));

src/cdk/a11y/key-manager/list-key-manager.ts

@@ -63,10 +63,10 @@ export class ListKeyManager<T extends ListKeyManagerOption> {
     // items aren't being collected via `ViewChildren` or `ContentChildren`).
     if (_items instanceof QueryList) {
       this._itemChangesSubscription = _items.changes.subscribe((newItems: QueryList<T>) => {
+        const itemArray = newItems.toArray();
+        this._typeahead?.setItems(itemArray);
         if (this._activeItem) {
-          const itemArray = newItems.toArray();
           const newIndex = itemArray.indexOf(this._activeItem);
-          this._typeahead?.setItems(itemArray);
 
           if (newIndex > -1 && newIndex !== this._activeItemIndex) {
             this._activeItemIndex = newIndex;

src/cdk/a11y/key-manager/typeahead.ts

@@ -36,6 +36,15 @@ export class Typeahead<T extends TypeaheadItem> {
       this._skipPredicateFn = config.skipPredicate;
     }
 
+    if (
+      (typeof ngDevMode === 'undefined' || ngDevMode) &&
+      initialItems.length &&
+      initialItems.some(item => typeof item.getLabel !== 'function')
+    ) {
+      console.error('failed', initialItems);
+      throw new Error('KeyManager items in typeahead mode must implement the `getLabel` method.');
+    }
+
     this.setItems(initialItems);
     this._setupKeyHandler(typeAheadInterval);
   }
@@ -51,14 +60,6 @@ export class Typeahead<T extends TypeaheadItem> {
   }
 
   setItems(items: T[]) {
-    if (
-      (typeof ngDevMode === 'undefined' || ngDevMode) &&
-      items.length &&
-      items.some(item => typeof item.getLabel !== 'function')
-    ) {
-      throw new Error('KeyManager items in typeahead mode must implement the `getLabel` method.');
-    }
-
     this._items = items;
   }
 
@@ -79,13 +80,12 @@ export class Typeahead<T extends TypeaheadItem> {
     return this._pressedLetters.length > 0;
   }
 
-  // TODO: find a better name?
+  /** Resets the currently stored sequence of typed letters. */
   reset(): void {
     this._pressedLetters = [];
   }
 
   private _setupKeyHandler(typeAheadInterval: number) {
-    // TODO: handle unsubscription
     // Debounce the presses of non-navigational keys, collect the ones that correspond to letters
     // and convert those letters back into a string. Afterwards find the first item that starts
     // with that string and select it.

src/components-examples/cdk/tree/cdk-tree-custom-key-manager/cdk-tree-custom-key-manager-example.ts

@@ -132,6 +132,10 @@ export class VimTreeKeyManager<T extends TreeKeyManagerItem> implements TreeKeyM
     }
   }
 
+  destroy() {
+    this.change.complete();
+  }
+
   /** Stream that emits any time the focused item changes. */
   readonly change = new Subject<T | null>();