Moved common and utils services to their own service providers

test/utils/services/ColorGenerator.test.js

@@ -1,5 +1,5 @@
 import * as sinon from 'sinon';
-import ColorGenerator from '../../src/utils/ColorGenerator';
+import ColorGenerator from '../../../src/utils/services/ColorGenerator';
 
 describe('ColorGenerator', () => {
   let colorGenerator;

test/utils/services/ShlinkApiClient.test.js

@@ -1,6 +1,6 @@
 import sinon from 'sinon';
 import { head, last } from 'ramda';
-import ShlinkApiClient from '../../src/api/ShlinkApiClient';
+import ShlinkApiClient from '../../../src/utils/services/ShlinkApiClient';
 
 describe('ShlinkApiClient', () => {
   const createAxiosMock = (extraData) => () =>

test/utils/services/ShlinkApiClientBuilder.test.js

@@ -0,0 +1,26 @@
+import buildShlinkApiClient from '../../../src/utils/services/ShlinkApiClientBuilder';
+
+describe('ShlinkApiClientBuilder', () => {
+  const builder = buildShlinkApiClient({});
+
+  it('creates new instances when provided params are different', () => {
+    const firstApiClient = builder({ url: 'foo', apiKey: 'bar' });
+    const secondApiClient = builder({ url: 'bar', apiKey: 'bar' });
+    const thirdApiClient = builder({ url: 'bar', apiKey: 'foo' });
+
+    expect(firstApiClient).not.toBe(secondApiClient);
+    expect(firstApiClient).not.toBe(thirdApiClient);
+    expect(secondApiClient).not.toBe(thirdApiClient);
+  });
+
+  it('returns existing instances when provided params are the same', () => {
+    const params = { url: 'foo', apiKey: 'bar' };
+    const firstApiClient = builder(params);
+    const secondApiClient = builder(params);
+    const thirdApiClient = builder(params);
+
+    expect(firstApiClient).toBe(secondApiClient);
+    expect(firstApiClient).toBe(thirdApiClient);
+    expect(secondApiClient).toBe(thirdApiClient);
+  });
+});