Added new test

test/api/ShlinkApiClient.test.js

@@ -0,0 +1,26 @@
+import { ShlinkApiClient } from '../../src/api/ShlinkApiClient'
+
+describe('ShlinkApiClient', () => {
+  const createApiClient = extraData => {
+    const axiosMock = () =>
+      Promise.resolve({
+        data: { token: 'foo', ...extraData },
+        headers: { authorization: 'Bearer abc123' }
+      });
+
+    return new ShlinkApiClient(axiosMock);
+  };
+
+  describe('listShortUrls', () => {
+    it('properly returns short URLs list', async () => {
+      const expectedList = ['foo', 'bar'];
+
+      const apiClient = createApiClient({
+        shortUrls: expectedList
+      });
+
+      const actualList = await apiClient.listShortUrls();
+      expect(expectedList).toEqual(actualList);
+    });
+  });
+});