generalov/angular-http-mock

import {inject, TestBed} from '@angular/core/testing';

import {HttpMock} from '../src/http-mock';
import {MockBackend} from '@angular/http/testing';
import {Observable} from 'rxjs';


describe('HttpMock', () => {

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        HttpMock,
        {
          provide: MockBackend,
          useValue: {
            connections: Observable.create((observer: any) => {
            })
          }
        }
      ]
    });
  });

  it('should be instantiated', inject([HttpMock], (mock: HttpMock) => {
    expect(mock).toBeDefined();
  }));

  describe('assertions', () => {
    it('should be defined', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.assertions).toBeDefined();
    }));
  });

  describe('responses', () => {
    it('should be defined', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.responses).toBeDefined();
    }));
  });

  describe('when()', () => {
    it('should be defined', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.when).toBeDefined();
    }));

    it('should accept GET method', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.when(({method: 'GET'}))).toBeDefined();
    }));

    it('should be fluent', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.when(({method: 'GET'}))).toBe(httpMock);
    }));

    it(`should throw Error if previous rule incomplete`, inject([HttpMock], (httpMock: HttpMock) => {
      httpMock.when({method: 'GET'});
      expect(() => httpMock.when({method: 'GET'})).toThrowError('Logic error');
    }));

  });

  describe('respond()', () => {
    it('should be defined', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.respond).toBeDefined();
    }));

    it(`should throw Error if no rules`, inject([HttpMock], (httpMock: HttpMock) => {
      expect(() => httpMock.respond({status: 200})).toThrowError('Logic error');
    }));

    it('should append rule', inject([HttpMock], (httpMock: HttpMock) => {
      expect(httpMock.assertions.length).toBe(0);
      httpMock.when({method: 'GET'}).respond({status: 200});
      expect(httpMock.assertions.length).toBe(1);
    }));

    it('should be fluent', inject([HttpMock], (httpMock: HttpMock) => {
      httpMock.when({method: 'GET'});
      expect(httpMock.respond({status: 200})).toBe(httpMock);
    }));
  });

});