feat: added node loader for styles for mocha

packages/gasket-plugin-mocha/generator/react-app/test/register-loader.js

@@ -1,4 +1,8 @@
 import { register } from 'module';
 import { pathToFileURL } from 'url';
 
+// Register the Babel loader
 register('@gasket/plugin-mocha/node-loader-babel', pathToFileURL('./test'));
+
+// Register the styles loader
+register('@gasket/plugin-mocha/node-loader-styles', pathToFileURL('./test'));

packages/gasket-plugin-mocha/lib/node-loader-styles/index.d.ts

@@ -0,0 +1,10 @@
+export function resolve(specifier: string, context: any, defaultResolve: any): {
+  url: string;
+  shortCircuit: boolean;
+} | ReturnType<typeof defaultResolve>;
+
+export function load(url: string, context: any, defaultLoad: any): {
+  format: string;
+  source: string;
+  shortCircuit: boolean;
+} | ReturnType<typeof defaultLoad>;

packages/gasket-plugin-mocha/lib/node-loader-styles/index.js

@@ -0,0 +1,34 @@
+const path = require('path');
+const { pathToFileURL } = require('url');
+
+// Extended regex for matching common CSS-related file extensions
+const styleFileRegex = /\.(css|scss|sass|less|styl)$/;
+
+function resolve(specifier, context, defaultResolve) {
+  // Use the regex to check if the file is a CSS or related file
+  if (styleFileRegex.test(specifier)) {
+    const filePath = path.resolve(__dirname, 'empty-module.js');
+    return {
+      url: pathToFileURL(filePath).href,
+      shortCircuit: true
+    };
+  }
+  return defaultResolve(specifier, context, defaultResolve);
+}
+
+function load(url, context, defaultLoad) {
+  // Handle loading for the 'empty-module.js' placeholder
+  if (url.endsWith('empty-module.js')) {
+    return {
+      format: 'module',
+      source: 'export default {};',
+      shortCircuit: true
+    };
+  }
+  return defaultLoad(url, context, defaultLoad);
+}
+
+module.exports = {
+  resolve,
+  load
+};

packages/gasket-plugin-mocha/package.json

@@ -17,6 +17,10 @@
       "types": "./lib/node-loader-babel/index.d.ts",
       "default": "./lib/node-loader-babel/index.js"
     },
+    "./node-loader-styles": {
+      "types": "./lib/node-loader-styles/index.d.ts",
+      "default": "./lib/node-loader-styles/index.js"
+    },
     "./package.json": "./package.json"
   },
   "scripts": {

packages/gasket-plugin-mocha/test/node-loader-styles/node-loader-styles.test.js

@@ -0,0 +1,31 @@
+const { resolve, load } = require('../../lib/node-loader-styles/index.js');
+const path = require('path');
+
+describe('resolve', () => {
+  it('should return a URL for CSS-related files', () => {
+    const result = resolve('./test.css', {}, () => {});
+    expect(result).toHaveProperty('url');
+    expect(result).toHaveProperty('shortCircuit', true);
+  });
+
+  it('should call defaultResolve for non-CSS-related files', () => {
+    const defaultResolve = jest.fn();
+    resolve('./test.js', {}, defaultResolve);
+    expect(defaultResolve).toHaveBeenCalled();
+  });
+});
+
+describe('load', () => {
+  it('should return a module format for the empty-module.js file', () => {
+    const result = load(path.resolve(__dirname, 'empty-module.js'), {}, () => {});
+    expect(result).toHaveProperty('format', 'module');
+    expect(result).toHaveProperty('source', 'export default {};');
+    expect(result).toHaveProperty('shortCircuit', true);
+  });
+
+  it('should call defaultLoad for non-empty-module.js files', () => {
+    const defaultLoad = jest.fn();
+    load('./test.js', {}, defaultLoad);
+    expect(defaultLoad).toHaveBeenCalled();
+  });
+});