Unit tests for moving & zooming directives added

src/app/cartography/directives/moving-canvas.directive.spec.ts

@@ -0,0 +1,169 @@
+import { ComponentFixture, TestBed, async, tick, fakeAsync } from '@angular/core/testing';
+import { NoopAnimationsModule } from '@angular/platform-browser/animations';
+import { Context } from '../models/context';
+import { MovingEventSource } from '../events/moving-event-source';
+import { MovingCanvasDirective } from './moving-canvas.directive';
+import { Component } from '@angular/core';
+
+@Component({
+    template: `<svg #svg class="map" preserveAspectRatio="none" movingCanvas><g class="canvas" transform="translate(0, 0) scale(1)"></g></svg>`
+})
+class DummyComponent {
+    constructor(){}
+}
+
+describe('MovingCanvasDirective', () => {
+    let component: DummyComponent;
+    let fixture: ComponentFixture<DummyComponent>;
+    let movingEventSource = new MovingEventSource();
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+        imports: [NoopAnimationsModule],
+        providers: [
+            { provide: MovingEventSource, useValue: movingEventSource },
+            { provide: Context, useClass: Context }
+        ],
+        declarations: [DummyComponent, MovingCanvasDirective]
+        }).compileComponents();
+    }));
+    
+    beforeEach(() => {
+        fixture = TestBed.createComponent(DummyComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
+
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
+
+    it('should move canvas if moving mode is activated', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let xMovement: number = 200;
+        let yMovement: number = 200;
+
+        canvas.dispatchEvent(new MouseEvent('mousedown', {
+            bubbles: true,
+            clientX: 0,
+            clientY: 0,
+            screenY: 0,
+            screenX: 0,
+            view: window
+        }));
+        tick();
+        canvas.dispatchEvent(new MouseEvent('mousemove', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: xMovement, 
+            movementY: yMovement 
+        } as MouseEventInit));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(${xMovement}, ${yMovement}) scale(1)`);
+    }));
+
+    it('should not move canvas if moving mode is not activated', fakeAsync(() => {
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+
+        canvas.dispatchEvent(new MouseEvent('mousedown', {
+            bubbles: true,
+            clientX: 0,
+            clientY: 0,
+            screenY: 0,
+            screenX: 0,
+            view: window
+        }));
+        tick();
+        canvas.dispatchEvent(new MouseEvent('mousemove', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: 1000, 
+            movementY: 1000 
+        } as MouseEventInit));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual('translate(0, 0) scale(1)');
+    }));
+
+    it('should not move canvas after mouseup event', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let xMovement: number = 200;
+        let yMovement: number = 200;
+
+        canvas.dispatchEvent(new MouseEvent('mousedown', {
+            bubbles: true,
+            clientX: 0,
+            clientY: 0,
+            screenY: 0,
+            screenX: 0,
+            view: window
+        }));
+        tick();
+        canvas.dispatchEvent(new MouseEvent('mousemove', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: xMovement, 
+            movementY: yMovement 
+        } as MouseEventInit));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(${xMovement}, ${yMovement}) scale(1)`);
+        
+        canvas.dispatchEvent(new MouseEvent('mouseup', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: 1000, 
+            movementY: 1000
+        } as MouseEventInit));
+        tick();
+        canvas.dispatchEvent(new MouseEvent('mousemove', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: xMovement, 
+            movementY: yMovement 
+        } as MouseEventInit));
+        tick();
+
+        expect(canvas.getAttribute('transform')).toEqual(`translate(${xMovement}, ${yMovement}) scale(1)`);
+    }));
+
+    it('should not move canvas after deactivation of moving mode', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let xMovement: number = 200;
+        let yMovement: number = 200;
+
+        canvas.dispatchEvent(new MouseEvent('mousedown', {
+            bubbles: true,
+            clientX: 0,
+            clientY: 0,
+            screenY: 0,
+            screenX: 0,
+            view: window
+        }));
+        tick();
+        canvas.dispatchEvent(new MouseEvent('mousemove', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: xMovement, 
+            movementY: yMovement 
+        } as MouseEventInit));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(${xMovement}, ${yMovement}) scale(1)`);
+        
+        movingEventSource.movingModeState.emit(false);
+        canvas.dispatchEvent(new MouseEvent('mousemove', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            movementX: 1000, 
+            movementY: 1000
+        } as MouseEventInit));
+        tick();
+
+        expect(canvas.getAttribute('transform')).toEqual(`translate(${xMovement}, ${yMovement}) scale(1)`);
+    }));
+});

src/app/cartography/directives/zooming-canvas.directive.spec.ts

@@ -0,0 +1,137 @@
+import { ComponentFixture, TestBed, async, tick, fakeAsync } from '@angular/core/testing';
+import { NoopAnimationsModule } from '@angular/platform-browser/animations';
+import { Context } from '../models/context';
+import { MovingEventSource } from '../events/moving-event-source';
+import { Component } from '@angular/core';
+import { ZoomingCanvasDirective } from './zooming-canvas.directive';
+
+@Component({
+    template: `<svg #svg class="map" preserveAspectRatio="none" zoomingCanvas><g class="canvas" transform="translate(0, 0) scale(1)"></g></svg>`
+})
+class DummyComponent {
+    constructor(){}
+}
+
+describe('ZoomingCanvasDirective', () => {
+    let component: DummyComponent;
+    let fixture: ComponentFixture<DummyComponent>;
+    let movingEventSource = new MovingEventSource();
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+        imports: [NoopAnimationsModule],
+        providers: [
+            { provide: MovingEventSource, useValue: movingEventSource },
+            { provide: Context, useClass: Context }
+        ],
+        declarations: [DummyComponent, ZoomingCanvasDirective]
+        }).compileComponents();
+    }));
+    
+    beforeEach(() => {
+        fixture = TestBed.createComponent(DummyComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
+
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
+
+    it('should zoom in canvas if moving mode is activated', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let deltaMode: number = 0;
+        let zoom: number = -1000;
+
+        window.dispatchEvent(new WheelEvent('wheel', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            deltaMode: deltaMode, 
+            deltaY: zoom
+        }));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(0, 0) scale(2)`);
+    }));
+
+    it('should zoom out canvas if moving mode is activated', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let deltaMode: number = 0;
+        let zoom: number = 100;
+
+        window.dispatchEvent(new WheelEvent('wheel', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            deltaMode: deltaMode, 
+            deltaY: zoom
+        }));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(0, 0) scale(0.9)`);
+    }));
+
+    it('should not zoom in/out canvas if moving mode is not activated', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let deltaMode: number = 0;
+        let zoom: number = -1000;
+
+        window.dispatchEvent(new WheelEvent('wheel', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            deltaMode: deltaMode, 
+            deltaY: zoom
+        }));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(0, 0) scale(2)`);
+        
+        movingEventSource.movingModeState.emit(false);
+        window.dispatchEvent(new WheelEvent('wheel', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            deltaMode: deltaMode, 
+            deltaY: zoom
+        }));
+        tick();
+
+        expect(canvas.getAttribute('transform')).toEqual(`translate(0, 0) scale(2)`);
+    }));
+
+    it('should not zoom in/out canvas after deactivation of moving mode', fakeAsync(() => {
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let deltaMode: number = 0;
+        let zoom: number = -1000;
+
+        window.dispatchEvent(new WheelEvent('wheel', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            deltaMode: deltaMode, 
+            deltaY: zoom
+        }));
+        tick();
+    
+        expect(canvas.getAttribute('transform')).toEqual(`translate(0, 0) scale(1)`);
+    }));
+
+    it('should prevent from default wheel behaviour when moving mode activated', fakeAsync(() => {
+        movingEventSource.movingModeState.emit(true);
+        const canvas: HTMLElement = fixture.debugElement.nativeElement.querySelector('.canvas');
+        let deltaMode: number = 0;
+        let zoom: number = -1000;
+        const event = new WheelEvent('wheel', { 
+            bubbles: true, 
+            relatedTarget: canvas, 
+            deltaMode: deltaMode, 
+            deltaY: zoom
+        });
+        spyOn(event, 'preventDefault');
+
+        window.dispatchEvent(event);
+        tick();
+    
+        expect(event.preventDefault).toHaveBeenCalled();
+    }));
+});