feat(core): setup jest

.github/workflows/core-main.yml

@@ -37,6 +37,10 @@ jobs:
         working-directory: packages/core
         run: pnpm lint
 
+      - name: Test
+        working-directory: packages/core
+        run: pnpm test
+
       - name: Build
         working-directory: packages/core
         run: pnpm build

packages/core/jest.config.js

@@ -0,0 +1,10 @@
+/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  globals: {
+    'ts-jest': {
+      tsconfig: 'tsconfig.test.json',
+    },
+  },
+};

packages/core/package.json

@@ -12,7 +12,8 @@
     "build": "rm -rf build/ && tsc",
     "lint": "eslint --format pretty --ext .ts src",
     "dev": "rm -rf build/ && tsc-watch --preserveWatchOutput --onSuccess \"node ./build/index.js\"",
-    "start": "NODE_ENV=production node build/index.js"
+    "start": "NODE_ENV=production node build/index.js",
+    "test": "jest"
   },
   "dependencies": {
     "@logto/essentials": "^1.1.0-rc.2",
@@ -41,8 +42,9 @@
     "zod": "^3.2.0"
   },
   "devDependencies": {
-    "@logto/eslint-config": "^0.1.0-rc.14",
-    "@logto/ts-config": "^0.1.0-rc.14",
+    "@logto/eslint-config": "^0.1.0-rc.17",
+    "@logto/ts-config": "^0.1.0-rc.17",
+    "@types/jest": "^27.0.1",
     "@types/koa": "^2.13.3",
     "@types/koa-logger": "^3.1.1",
     "@types/koa-mount": "^4.0.0",
@@ -53,9 +55,11 @@
     "@types/oidc-provider": "^7.4.1",
     "eslint": "^7.30.0",
     "eslint-formatter-pretty": "^4.1.0",
+    "jest": "^27.0.6",
     "lint-staged": "^11.1.1",
     "openapi-types": "^9.1.0",
     "prettier": "^2.3.2",
+    "ts-jest": "^27.0.5",
     "tsc-watch": "^4.4.0",
     "typescript": "^4.3.5"
   },

packages/core/src/utils/env.test.ts

@@ -0,0 +1,32 @@
+import { AssertionError } from 'assert';
+import { assertEnv, getEnv } from './env';
+
+describe('getEnv()', () => {
+  beforeAll(() => {
+    process.env = { FOO: 'bar' };
+  });
+
+  it('returns correct env value', () => {
+    expect(getEnv('FOO')).toEqual('bar');
+  });
+
+  it("returns fallback if env doesn't exist", () => {
+    expect(getEnv('BAR', '123')).toEqual('123');
+  });
+});
+
+describe('assertEnv()', () => {
+  beforeAll(() => {
+    process.env = { FOO: 'bar' };
+  });
+
+  it('returns correct env value', () => {
+    expect(assertEnv('FOO')).toEqual('bar');
+  });
+
+  it("throws an error if env doesn't exist", () => {
+    expect(() => assertEnv('BAR')).toThrow(
+      new AssertionError({ message: 'env variable BAR not found' })
+    );
+  });
+});

packages/core/tsconfig.base.json

@@ -0,0 +1,12 @@
+{
+  "extends": "@logto/ts-config/tsconfig.base",
+  "compilerOptions": {
+    "outDir": "build",
+    "baseUrl": ".",
+    "paths": {
+      "@/*": [
+        "src/*"
+      ]
+    }
+  }
+}

packages/core/tsconfig.json

@@ -1,15 +1,9 @@
 {
-  "extends": "@logto/ts-config/tsconfig.base",
-  "compilerOptions": {
-    "outDir": "build",
-    "baseUrl": ".",
-    "paths": {
-      "@/*": [
-        "src/*"
-      ]
-    }
-  },
+  "extends": "./tsconfig.base",
   "include": [
     "src"
+  ],
+  "exclude": [
+    "src/**/*.test.ts"
   ]
 }

packages/core/tsconfig.test.json

@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.base",
+  "compilerOptions": {
+    "isolatedModules": false
+  },
+  "include": [
+    "src/**/*.test.ts"
+  ]
+}