Added full coverage by tests

Author: OlehDutchenko

.gitignore

@@ -8,4 +8,5 @@ thumbs.db
 *.iws
 
 node_modules/
+coverage/
 package-lock.json

__specs__/index.spec.js

@@ -0,0 +1,49 @@
+const babelLoaderExcludeNodeModulesExcept = require('../index');
+const path = require('path');
+const escapeStringRegexp = require('escape-string-regexp');
+const ESCAPED_PATH_SEP = escapeStringRegexp(path.sep);
+
+const X = ESCAPED_PATH_SEP === '\\\\';
+
+describe('Should create a correct regular expression for excluding node_modules', function () {
+	/**
+	 * @type {TestCase[]}
+	 */
+	const testCases = [
+		{
+			params: undefined,
+			expected: /node_modules/i
+		},
+		{
+			params: [],
+			expected: /node_modules/i
+		},
+		{
+			params: ['xxx'],
+			expected: X ? /node_modules\\(?!(xxx)\\)/i : /node_modules\/(?!(xxx)\/)/i
+		},
+		{
+			params: ['xxx/'],
+			expected: X ? /node_modules\\(?!(xxx)\\)/i : /node_modules\/(?!(xxx)\/)/i
+		},
+		{
+			params: ['zZz', 'yYy'],
+			expected: X
+				? /node_modules\\(?!(zZz|yYy)\\)/i
+				: /node_modules\/(?!(zZz|yYy)\/)/i
+		}
+	];
+
+	testCases.forEach(function ({ params, expected }, i) {
+		test(`Test case #${i + 1}`, function () {
+			const result = babelLoaderExcludeNodeModulesExcept(params);
+			expect(result).toEqual(expected);
+		});
+	});
+});
+
+/**
+ * @typedef {Object} TestCase
+ * @property {string[]} params
+ * @property {RegExp} expected
+ */

jest.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+	coverageReporters: ['json-summary', 'lcov'],
+	coveragePathIgnorePatterns: ['<rootDir>/node_modules/'],
+	testPathIgnorePatterns: ['<rootDir>/node_modules/']
+};

package.json

@@ -1,10 +1,14 @@
 {
   "name": "babel-loader-exclude-node-modules-except",
-  "version": "1.0.3",
+  "version": "1.1.0",
   "description": "Creating a regular expression for excluding node_modules from babel transpiling except for individual modules",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "npm run prettier && npm run eslint",
+    "prettier": "prettier index.js --check",
+    "eslint": "eslint index.js",
+    "jest": "jest",
+    "jest:coverage": "jest --coverage --collectCoverageFrom=\"index.js\" && istanbul-badges-readme"
   },
   "repository": {
     "type": "git",
@@ -28,5 +32,13 @@
   "homepage": "https://github.com/WezomAgency/babel-loader-exclude-node-modules-except#readme",
   "dependencies": {
     "escape-string-regexp": "2.0.0"
+  },
+  "devDependencies": {
+    "@wezom/eslint-config": "^2.1.0-beta.0",
+    "eslint": "^7.19.0",
+    "eslint-config-prettier": "^7.2.0",
+    "istanbul-badges-readme": "^1.2.0",
+    "jest": "^26.6.3",
+    "prettier": "^2.2.1"
   }
 }