/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import ngMock from 'ng_mock';
import sinon from 'sinon';
import expect from '@kbn/expect';

import { SearchRequestProvider } from '../search_request';
import { searchRequestQueue } from '../../../../search_request_queue';

describe('ui/courier/fetch search request', () => {
  beforeEach(ngMock.module('kibana'));

  afterEach(() => {
    searchRequestQueue.removeAll();
  });

  it(
    'throws exception when created without errorHandler',
    ngMock.inject(Private => {
      const SearchReq = Private(SearchRequestProvider);

      let caughtError = false;
      try {
        new SearchReq({ source: {} });
      } catch (error) {
        caughtError = true;
      }
      expect(caughtError).to.be(true);
    })
  );

  describe('start', () => {
    it(
      'calls this.source.requestIsStarting(request)',
      ngMock.inject(Private => {
        const SearchReq = Private(SearchRequestProvider);

        const spy = sinon.spy(() => Promise.resolve());
        const source = { requestIsStarting: spy };

        const req = new SearchReq({ source, errorHandler: () => {} });
        expect(req.start())
          .to.have.property('then')
          .a('function');
        sinon.assert.calledOnce(spy);
        sinon.assert.calledWithExactly(spy, req);
      })
    );
  });

  describe('clone', () => {
    it(
      'returns a search request with identical constructor arguments',
      ngMock.inject(Private => {
        const SearchRequest = Private(SearchRequestProvider);

        const source = {};
        const errorHandler = () => {};
        const defer = {};

        const originalRequest = new SearchRequest({ source, errorHandler, defer });
        const clonedRequest = originalRequest.clone();

        expect(clonedRequest).not.to.be(originalRequest);
        expect(clonedRequest.source).to.be(source);
        expect(clonedRequest.errorHandler).to.be(errorHandler);
        expect(clonedRequest.defer).to.be(defer);
      })
    );
  });
});
