Created ShortUrlVisits test

test/visits/ShortUrlVisits.test.js

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+import React from 'react';
+import { shallow } from 'enzyme';
+import { identity } from 'ramda';
+import { Card } from 'reactstrap';
+import * as sinon from 'sinon';
+import { ShortUrlsVisitsComponent as ShortUrlsVisits } from '../../src/visits/ShortUrlVisits';
+import MutedMessage from '../../src/utils/MuttedMessage';
+import { GraphCard } from '../../src/visits/GraphCard';
+import DateInput from '../../src/common/DateInput';
+
+describe('<ShortUrlVisits />', () => {
+  let wrapper;
+  const statsProcessor = () => ({});
+  const getShortUrlVisitsMock = sinon.spy();
+  const match = {
+    params: { shortCode: 'abc123' },
+  };
+
+  const createComponent = (shortUrlVisits) => {
+    wrapper = shallow(
+      <ShortUrlsVisits
+        getShortUrlDetail={identity}
+        getShortUrlVisits={getShortUrlVisitsMock}
+        processBrowserStats={statsProcessor}
+        processCountriesStats={statsProcessor}
+        processOsStats={statsProcessor}
+        processReferrersStats={statsProcessor}
+        match={match}
+        shortUrlVisits={shortUrlVisits}
+        shortUrlDetail={{}}
+      />
+    );
+
+    return wrapper;
+  };
+
+  afterEach(() => {
+    getShortUrlVisitsMock.resetHistory();
+
+    if (wrapper) {
+      wrapper.unmount();
+    }
+  });
+
+  it('Renders a preloader when visits are loading', () => {
+    const wrapper = createComponent({ loading: true });
+    const loadingMessage = wrapper.find(MutedMessage);
+
+    expect(loadingMessage).toHaveLength(1);
+    expect(loadingMessage.html()).toContain('Loading...');
+  });
+
+  it('renders an error message when visits could not be loaded', () => {
+    const wrapper = createComponent({ loading: false, error: true });
+    const errorMessage = wrapper.find(Card);
+
+    expect(errorMessage).toHaveLength(1);
+    expect(errorMessage.html()).toContain('An error occurred while loading visits :(');
+  });
+
+  it('renders a message when visits are loaded but the list is empty', () => {
+    const wrapper = createComponent({ loading: false, error: false, visits: [] });
+    const message = wrapper.find(MutedMessage);
+
+    expect(message).toHaveLength(1);
+    expect(message.html()).toContain('There are no visits matching current filter  :(');
+  });
+
+  it('renders all graphics when visits are properly loaded', () => {
+    const wrapper = createComponent({ loading: false, error: false, visits: [{}, {}, {}] });
+    const graphs = wrapper.find(GraphCard);
+    const expectedGraphsCount = 4;
+
+    expect(graphs).toHaveLength(expectedGraphsCount);
+  });
+
+  it('reloads visits when selected dates change', () => {
+    const wrapper = createComponent({ loading: false, error: false, visits: [{}, {}, {}] });
+    const dateInput = wrapper.find(DateInput).first();
+    const expectedGetShortUrlVisitsCalls = 4;
+
+    dateInput.simulate('change', '2016-01-01T00:00:00+01:00');
+    dateInput.simulate('change', '2016-01-02T00:00:00+01:00');
+    dateInput.simulate('change', '2016-01-03T00:00:00+01:00');
+
+    expect(getShortUrlVisitsMock.callCount).toEqual(expectedGetShortUrlVisitsCalls);
+    expect(wrapper.state('startDate')).toEqual('2016-01-03T00:00:00+01:00');
+  });
+});