Added ShlinkVersions test

test/common/ShlinkVersions.test.js

@@ -0,0 +1,26 @@
+import React from 'react';
+import { shallow } from 'enzyme';
+import ShlinkVersions from '../../src/common/ShlinkVersions';
+
+describe('<ShlinkVersions />', () => {
+  let wrapper;
+  const createWrapper = (props) => {
+    wrapper = shallow(<ShlinkVersions {...props} />);
+
+    return wrapper;
+  };
+
+  afterEach(() => wrapper && wrapper.unmount());
+
+  it.each([
+    [ '1.2.3', 'foo', 'Client: v1.2.3 - Server: foo' ],
+    [ 'foo', '1.2.3', 'Client: latest - Server: 1.2.3' ],
+    [ 'latest', 'latest', 'Client: latest - Server: latest' ],
+    [ '5.5.0', '0.2.8', 'Client: v5.5.0 - Server: 0.2.8' ],
+    [ 'not-semver', 'something', 'Client: latest - Server: something' ],
+  ])('displays expected versions', (clientVersion, printableVersion, expected) => {
+    const wrapper = createWrapper({ clientVersion, selectedServer: { printableVersion } });
+
+    expect(wrapper.text()).toEqual(expected);
+  });
+});