Re-unify the test suite

setupTest.js

@@ -2,12 +2,24 @@ import '@testing-library/jest-dom';
 import { vi } from 'vitest';
 import { setupIntersectionMocking } from 'react-intersection-observer/test-utils';
 import i18next from 'i18next';
+import createFetchMock from 'vitest-fetch-mock';
 import en from './src/locales/en/translation.json';
 
 // vitest doesn't set a default
 window.origin = 'http://localhost';
 
 vi.setConfig({ testTimeout: 10_000 });
+const fetchMocker = createFetchMock(vi);
+
+// changes default behavior of fetchMock to use the real 'fetch' implementation and not mock responses
+beforeEach((context) => {
+  if(context.task.file.name.includes('/integration')) {
+    fetchMocker.disableMocks();
+  } else {
+    // sets globalThis.fetch and globalThis.fetchMock to our mocked version
+    fetchMocker.enableMocks();
+  }
+});
 
 /** */
 class Path2D {

vitest.config.ts

@@ -5,6 +5,16 @@ import { fileURLToPath } from 'url';
 import fs from 'fs/promises';
 
 export default defineConfig({
+  test: {
+    environment: 'happy-dom',
+    exclude: ['node_modules'],
+    fileParallelism: false,
+    maxConcurrency: 1,
+    globals: true,
+    include: ['**/*.test.js', '**/*.test.jsx'],
+    name: 'unit',
+    setupFiles: ['./setupTest.js'],
+  },
   esbuild: {
     exclude: [],
     include: /(src|__tests__)\/.*\.jsx?$/,