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import {TestBed, ComponentFixture} from '@angular/core/testing';
import {Component, DebugElement} from "@angular/core";
import {By} from "@angular/platform-browser";
import { InputPreventionPatternDirective } from './inputPreventionPattern.directive';
@Component({
template: `<input
patternInput
pattern="^[a-zA-Z0-9_]*$">`
})
class TestHoverFocusComponent {
}
describe('InputPrevention Pattern Directive', () => {
let component: TestHoverFocusComponent;
let fixture: ComponentFixture<TestHoverFocusComponent>;
let directiveInstance : InputPreventionPatternDirective;
let inputEl: DebugElement;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [TestHoverFocusComponent, InputPreventionPatternDirective]
});
fixture = TestBed.createComponent(TestHoverFocusComponent);
component = fixture.componentInstance;
inputEl = fixture.debugElement.query(By.css('input'));
directiveInstance = inputEl.injector.get(InputPreventionPatternDirective);
});
it('directive should be defined', () => {
expect(directiveInstance).toBeDefined();
});
it('pattern exists', () => {
expect(inputEl.nativeElement.pattern).toEqual('^[a-zA-Z0-9_]*$');
});
it('kepress legal input', () => {
fixture.detectChanges();
inputEl.nativeElement.value = "legalInput";
expect(new RegExp(inputEl.nativeElement.pattern).test(inputEl.nativeElement.value)).toBeTruthy();
});
it('kepress illegal input', () => {
inputEl.triggerEventHandler('kepress', " ");
fixture.detectChanges();
expect(inputEl.nativeElement.value).toBe('');
});
it('kepress event legal input should return event', () => {
const event = <any>{ key: 'A' };
inputEl.nativeElement.value = "legalInput";
let result = directiveInstance.onKeypress(event);
expect(result).toBe(event);
});
it('kepress event illegal input should prevent default', () => {
const event = <any>{key: '-', preventDefault : function () {} };
spyOn(event, 'preventDefault');
inputEl.nativeElement.value = "-";
let result = directiveInstance.onKeypress(event);
expect(event.preventDefault).toHaveBeenCalled();
});
});
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