test: add e2e tests (#19)

Author: mrazauskas

.github/workflows/nodejs.yml

@@ -11,7 +11,23 @@ on:
       - next
 
 jobs:
+  prepare-yarn-cache:
+    name: Prepare yarn cache
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+          cache: yarn
+
+      - name: Validate cache
+        run: yarn
+
   lint:
+    needs: prepare-yarn-cache
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -23,3 +39,45 @@ jobs:
         run: yarn
       - name: run ESLint
         run: yarn lint
+
+  test-node:
+    name: Test on Node.js v${{ matrix.node-version }}
+    needs: prepare-yarn-cache
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [10.x, 12.x, 14.x, 16.x]
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: yarn
+      - name:
+          install
+        run: yarn
+      - name: run tests
+        run: yarn test
+
+  test-os:
+    name: Test on ${{ matrix.os }} using Node.js LTS
+    needs: prepare-yarn-cache
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+          cache: yarn
+      - name: install
+        run: yarn
+      - name: run tests
+        run: yarn test

.gitignore

@@ -1,5 +1,3 @@
-node_modules/*
-.idea/*
-.vscode/*
+node_modules
+.DS_Store
 *.log
-

.npmignore

@@ -0,0 +1,4 @@
+e2e/
+.*
+*.log
+*.config.js

babel.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  presets: [
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+    '@babel/preset-typescript',
+  ],
+};

e2e/__fixtures__/docblock/concat.d.ts

@@ -0,0 +1,7 @@
+/* eslint-disable no-unused-vars */
+declare const concat: {
+  (a: string, b: string): string;
+  (a: number, b: number): number;
+};
+
+export default concat;

e2e/__fixtures__/docblock/concat.js

@@ -0,0 +1 @@
+module.exports = (a, b) => a + b;

e2e/__fixtures__/docblock/concat.test.ts

@@ -0,0 +1,9 @@
+/**
+ * @type ./concat.d.ts
+ */
+
+import { expectType } from 'mlh-tsd';
+import concat from './concat';
+
+expectType<string>(concat('pre', 'fix'));
+expectType<number>(concat(1, 2));

e2e/__fixtures__/docblock/package.json

@@ -0,0 +1,6 @@
+{
+  "jest": {
+    "runner": "../../../src/",
+    "testMatch": ["**/*.test.ts"]
+  }
+}

e2e/__fixtures__/failing/index.d.ts

@@ -0,0 +1,7 @@
+/* eslint-disable no-unused-vars */
+declare const concat: {
+  (a: string, b: string): string;
+  (a: number, b: number): number;
+};
+
+export default concat;

e2e/__fixtures__/failing/index.test.ts

@@ -0,0 +1,5 @@
+import { expectType } from 'mlh-tsd';
+import concat from '.';
+
+expectType<string>(concat('pre', 'fix'));
+expectType<string>(concat(1, 2));