projects/swimlane/ngx-datatable/src/lib/directives/draggable.directive.spec.ts
import { async, TestBed, ComponentFixture } from '@angular/core/testing';
import { Component } from '@angular/core';
import { By } from '@angular/platform-browser';
import { DraggableDirective } from './draggable.directive';
@Component({
selector: 'test-fixture-component',
template: ` <div draggable></div> `
})
class TestFixtureComponent {}
describe('DraggableDirective', () => {
let fixture: ComponentFixture<TestFixtureComponent>;
let component: TestFixtureComponent;
let element: any;
// provide our implementations or mocks to the dependency injector
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [DraggableDirective, TestFixtureComponent]
});
});
beforeEach(async(() => {
TestBed.compileComponents().then(() => {
fixture = TestBed.createComponent(TestFixtureComponent);
component = fixture.componentInstance;
element = fixture.nativeElement;
});
}));
describe('fixture', () => {
let directive: DraggableDirective;
beforeEach(() => {
directive = fixture.debugElement.query(By.directive(DraggableDirective)).injector.get(DraggableDirective);
});
it('should have a component instance', () => {
expect(component).toBeTruthy();
});
it('should have DraggableDirective directive', () => {
expect(directive).toBeTruthy();
});
describe('mouse event', () => {
let mouseDown: MouseEvent;
beforeEach(() => {
element.classList.add('draggable');
mouseDown = <MouseEvent>{
target: element,
// tslint:disable-next-line
preventDefault: () => {}
};
});
// or else the document:mouseup event can fire again when resizing.
describe('subscription should be destroyed', () => {
it('when ngOnDestroy is called', () => {
directive.onMousedown(mouseDown);
expect(directive.subscription).toBeTruthy();
directive.ngOnDestroy();
expect(directive.subscription).toBeUndefined();
});
it('when onMouseup called and dragging', () => {
directive.onMousedown(mouseDown);
expect(directive.subscription).toBeTruthy();
// tslint:disable-next-line: no-object-literal-type-assertion
directive.onMouseup(<MouseEvent>{});
expect(directive.subscription).toBeUndefined();
});
});
describe('subscription should not be destroyed', () => {
it('when onMouseup is called and not dragging', () => {
directive.onMousedown(mouseDown);
directive.isDragging = false;
expect(directive.subscription).toBeTruthy();
// tslint:disable-next-line: no-object-literal-type-assertion
directive.onMouseup(<MouseEvent>{});
expect(directive.subscription).toBeTruthy();
});
});
});
});
});