OZG-6129 tdd onKeydownHandler method

alfa-client/libs/design-system/src/lib/instant-search/instant-search/instant-search.component.spec.ts

@@ -311,6 +311,98 @@ describe('InstantSearchComponent', () => {
     });
   });
 
+  describe('onKeydownHandler', () => {
+    const keyboardEvent: KeyboardEvent = new KeyboardEvent('a');
+
+    beforeEach(() => {
+      component.isSearchResultsEmpty = jest.fn();
+      component.isArrowNavigationKey = jest.fn();
+      component.isEscapeKey = jest.fn();
+      component.handleArrowNavigation = jest.fn();
+      component.handleEscape = jest.fn();
+    });
+
+    it('should check for empty result', () => {
+      component.onKeydownHandler(keyboardEvent);
+
+      expect(component.isSearchResultsEmpty).toHaveBeenCalled();
+    });
+
+    describe('search result is empty', () => {
+      beforeEach(() => {
+        component.isSearchResultsEmpty = jest.fn().mockReturnValue(true);
+      });
+
+      it('should ignore key navigation', () => {
+        component.onKeydownHandler(keyboardEvent);
+
+        expect(component.isArrowNavigationKey).not.toHaveBeenCalled();
+      });
+
+      it('should ignore escape key handling', () => {
+        component.onKeydownHandler(keyboardEvent);
+
+        expect(component.isEscapeKey).not.toHaveBeenCalled();
+      });
+    });
+
+    describe('search result is not empty', () => {
+      beforeEach(() => {
+        component.isSearchResultsEmpty = jest.fn().mockReturnValue(false);
+      });
+
+      it('should check if arrow navigation', () => {
+        component.onKeydownHandler(keyboardEvent);
+
+        expect(component.isArrowNavigationKey).toHaveBeenCalled();
+      });
+
+      it('should handle arrow navigation', () => {
+        component.isArrowNavigationKey = jest.fn().mockReturnValue(true);
+
+        component.onKeydownHandler(keyboardEvent);
+
+        expect(component.handleArrowNavigation).toHaveBeenCalled();
+      });
+
+      it('should not handle arrow navigation', () => {
+        component.isArrowNavigationKey = jest.fn().mockReturnValue(false);
+
+        component.onKeydownHandler(keyboardEvent);
+
+        expect(component.handleArrowNavigation).not.toHaveBeenCalled();
+      });
+
+      describe('is not arrow navigation', () => {
+        beforeEach(() => {
+          component.isArrowNavigationKey = jest.fn().mockReturnValue(false);
+        });
+
+        it('should check for escape key', () => {
+          component.onKeydownHandler(keyboardEvent);
+
+          expect(component.isEscapeKey).toHaveBeenCalled();
+        });
+
+        it('should handle escape key', () => {
+          component.isEscapeKey = jest.fn().mockReturnValue(true);
+
+          component.onKeydownHandler(keyboardEvent);
+
+          expect(component.handleEscape).toHaveBeenCalled();
+        });
+
+        it('should not handle escape key', () => {
+          component.isEscapeKey = jest.fn().mockReturnValue(false);
+
+          component.onKeydownHandler(keyboardEvent);
+
+          expect(component.handleEscape).not.toHaveBeenCalled();
+        });
+      });
+    });
+  });
+
   describe('isSearchResultsEmpty', () => {
     it('should return true', () => {
       component.results = [];

alfa-client/libs/design-system/src/lib/instant-search/instant-search/instant-search.component.ts

@@ -108,12 +108,8 @@ export class InstantSearchComponent implements OnInit, OnDestroy {
   @HostListener('document:keydown', ['$event'])
   onKeydownHandler(e: KeyboardEvent): void {
     if (this.isSearchResultsEmpty()) return;
-    if (this.isArrowNavigationKey(e)) {
-      this.handleArrowNavigation(e);
-    }
-    if (this.isEscapeKey(e)) {
-      this.handleEscape(e);
-    }
+    if (this.isArrowNavigationKey(e)) this.handleArrowNavigation(e);
+    if (this.isEscapeKey(e)) this.handleEscape(e);
   }
 
   @HostListener('document:click', ['$event'])