feat: add jest basic config

jest.config.js

@@ -0,0 +1,16 @@
+module.exports = {
+  preset: 'ts-jest',
+  globals: {
+    // work around: https://github.com/kulshekhar/ts-jest/issues/748#issuecomment-423528659
+    'ts-jest': {
+      diagnostics: {
+        ignoreCodes: [151001],
+      },
+    },
+  },
+  testEnvironment: 'jsdom',
+  transform: {
+    "^.+\\.vue$": "vue-jest"
+  },
+  moduleFileExtensions: ['vue', 'json', 'ts', 'tsx', 'js', 'json']
+}

package.json

@@ -6,6 +6,7 @@
     "dev": "vite",
     "build": "vite build",
     "cz": "npx git-cz",
+    "test": "lerna run test --stream",
     "gc": "sh ./scripts/gc.sh"
   },
   "dependencies": {
@@ -13,9 +14,11 @@
     "vue-router": "^4.0.0-beta.2"
   },
   "devDependencies": {
+    "@types/jest": "^26.0.7",
     "@vue/compiler-sfc": "^3.0.0-rc.1",
     "cz-conventional-changelog": "^3.2.0",
     "lerna": "^3.22.1",
+    "typescript": "^3.9.7",
     "vite": "^1.0.0-rc.1"
   },
   "config": {

packages/button/__tests__/button.spec.ts

@@ -0,0 +1,6 @@
+describe('Button.vue', () => {
+  test('hello world', () => {
+    const bestGirl = 'Rem'
+    expect(bestGirl).not.toMatch('Emilia')
+  })
+})

packages/button/package.json

@@ -3,7 +3,16 @@
   "version": "0.0.0",
   "main": "dist/index.js",
   "license": "MIT",
+  "scripts": {
+    "test": "jest --config ../../jest.config.js --rootDir ."
+  },
   "dependencies": {
     "vue": "^3.0.0-rc.1"
+  },
+  "devDependencies": {
+    "@vue/test-utils": "^2.0.0-beta.0",
+    "jest": "^26.1.0",
+    "ts-jest": "^26.1.3",
+    "vue-jest": "5.0.0-alpha.1"
   }
 }