chore: add zoom.cy.ts

projects/demo-cypress/src/tests/zoom.cy.ts

@@ -0,0 +1,95 @@
+import {Component} from '@angular/core';
+import {tuiFloor, TuiZoom, TuiZoomModule} from '@taiga-ui/cdk';
+import {TuiRootModule} from '@taiga-ui/core';
+
+describe('TuiZoom', () => {
+    let component: TestComponent;
+
+    @Component({
+        template: `
+            <tui-root>
+                <section (tuiZoom)="onZoom($event)"></section>
+            </tui-root>
+        `,
+    })
+    class TestComponent {
+        scale = 1;
+
+        onZoom({delta}: TuiZoom): void {
+            this.scale -= delta;
+        }
+    }
+
+    beforeEach(() =>
+        cy
+            .mount(TestComponent, {
+                imports: [TuiRootModule, TuiZoomModule],
+            })
+            .then(wrapper => {
+                component = wrapper.component;
+            }),
+    );
+
+    it('pinch', () => {
+        cy.get('section')
+            .then(query => {
+                const element = query.get(0);
+
+                sendTouchEvent([10, 10], [20, 20], element, 'touchstart');
+                sendTouchEvent([5, 5], [25, 25], element, 'touchmove');
+                sendTouchEvent([5, 5], [25, 25], element, 'touchend');
+            })
+            .then(() => expect(tuiFloor(component.scale, 2)).to.eql(0.85));
+    });
+
+    it('wheel', () => {
+        cy.get('section')
+            .then(query => {
+                const element = query.get(0);
+                const wheel = new WheelEvent('wheel', {deltaY: 1.1});
+
+                element.dispatchEvent(wheel);
+            })
+            .then(() => expect(tuiFloor(component.scale, 2)).to.eql(1.01));
+    });
+});
+
+function sendTouchEvent(
+    [x, y]: [number, number],
+    [x2, y2]: [number, number],
+    element: HTMLElement,
+    eventType: 'touchend' | 'touchmove' | 'touchstart',
+): void {
+    const touchObj1 = new Touch({
+        identifier: Date.now(),
+        target: element,
+        clientX: x,
+        clientY: y,
+        radiusX: 2.5,
+        radiusY: 2.5,
+        rotationAngle: 10,
+        force: 0.5,
+    });
+
+    const touchObj2 = new Touch({
+        identifier: Date.now(),
+        target: element,
+        clientX: x2,
+        clientY: y2,
+        radiusX: 2.5,
+        radiusY: 2.5,
+        rotationAngle: 10,
+        force: 0.5,
+    });
+
+    const touchEvent = new TouchEvent(eventType, {
+        cancelable: true,
+        bubbles: true,
+        touches: [touchObj1, touchObj2],
+        targetTouches: [],
+        changedTouches: [touchObj1, touchObj2],
+        shiftKey: true,
+    });
+
+    element.dispatchEvent(touchEvent);
+}