Merge branch '5-create-basic-testing-setup' into 'main'

Resolve "Create basic testing setup."

Closes #5

See merge request finvis/usxi!5

.eslintignore

@@ -1,3 +1,4 @@
 dist
 node_modules
-.eslintrc.js
+.eslintrc.js
+jest.config.ts

.eslintrc.js

@@ -3,7 +3,7 @@ module.exports = {
     parserOptions: {
       ecmaVersion: "latest", // Allows the use of modern ECMAScript features
       sourceType: "module", // Allows for the use of imports
-      project: "./tsconfig.json"
+      project: ["./tsconfig.json", "./tsconfig.test.json"]
     },
     extends: ["plugin:@typescript-eslint/recommended"], // Uses the linting rules from @typescript-eslint/eslint-plugin
     env: {

jest.config.ts

@@ -0,0 +1,13 @@
+import type { Config } from '@jest/types'
+
+const config: Config.InitialOptions =
+{
+    transform:
+    {
+    '^.+\\.tsx?$': 'ts-jest',
+    },
+
+    collectCoverageFrom: ['src/*.ts'],
+}
+
+export default config

package.json

@@ -5,16 +5,22 @@
   "main": "index.js",
   "scripts": {
     "start": "node dist/index.js",
-    "lint": "eslint . --fix"
+    "lint": "eslint src/ --fix",
+    "lint-test": "eslint test/ --fix",
+    "test": "jest test/ --config jest.config.ts"
   },
   "author": "",
   "license": "GPL-3.0-or-later",
   "devDependencies": {
     "@tsconfig/node-lts": "^18.12.5",
+    "@types/jest": "^29.5.5",
     "@types/node": "^20.8.2",
     "@typescript-eslint/eslint-plugin": "^6.7.4",
     "@typescript-eslint/parser": "^6.7.4",
     "eslint": "^8.50.0",
+    "jest": "^29.7.0",
+    "ts-jest": "^29.1.1",
+    "ts-node": "^10.9.1",
     "typescript": "^5.2.2"
   },
   "dependencies": {

test/basic.test.ts

@@ -0,0 +1,7 @@
+import {describe, expect, test} from '@jest/globals';
+
+describe('sum module', () => {
+  test('adds 1 + 2 to equal 3', () => {
+    expect(1 + 2).toBe(3);
+  });
+});

tsconfig.test.json

@@ -0,0 +1,8 @@
+{
+    "extends": "@tsconfig/node-lts/tsconfig.json",
+    "compilerOptions": {
+        "outDir": "dist"
+    },
+    "include": ["test"],
+    "exclude": ["node_modules"]
+  }