Add type-tests

files/__addonLocation__/package.json

@@ -25,6 +25,7 @@
     "lint:hbs:fix": "ember-template-lint . --fix --no-error-on-unmatched-pattern",
     "lint:js:fix": "eslint . --fix",<% if (typescript) { %>
     "lint:types": "glint",
+    "lint:types-tests": "glint --project type-tests",
     "start": "concurrently 'npm:start:*'",
     "start:js": "rollup --config --watch --no-watch.clearScreen",
     "start:types": "glint --declaration --watch",<% } else { %>
@@ -73,7 +74,8 @@
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-ember": "^11.6.0",
     "eslint-plugin-n": "^16.0.0",
-    "eslint-plugin-prettier": "^4.0.0",
+    "eslint-plugin-prettier": "^4.0.0",<% if (typescript) { %>
+    "expect-type": "^0.16.0",<% } %>
     "prettier": "^2.5.1",
     "rollup": "^3.21.8"<% if (!isExistingMonorepo) { %>,
     "rollup-plugin-copy": "^3.4.0"<% } %><% if (typescript) { %>,

files/__addonLocation__/tsconfig.json

@@ -8,6 +8,6 @@
     "environment": "ember-loose"
   },
   "compilerOptions": {
-    "declarationDir": "declarations"
+    "declarationDir": "declarations",
   }
 }

files/__addonLocation__/type-tests/index.test.ts

@@ -0,0 +1,4 @@
+import { expectTypeOf } from 'expect-type';
+
+// Replace this with your real type tests
+expectTypeOf(1).toEqualTypeOf<number>();

files/__addonLocation__/type-tests/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "@tsconfig/ember/tsconfig.json"
+}

index.js

@@ -310,6 +310,8 @@ module.exports = {
       files = files.filter(
         (filename) => !filename.match(/.*\.ts$/) && !ignoredFiles.includes(filename)
       );
+
+      files = files.filter((filename) => !filename.includes('type-tests'));
     }
 
     if (this.isExistingMonorepo) {

tests/fixtures/addon-only-ts/type-tests/index.test.ts

@@ -0,0 +1,4 @@
+import { expectTypeOf } from 'expect-type';
+
+// Replace this with your real type tests
+expectTypeOf(1).toEqualTypeOf<number>();

tests/smoke-tests/--typescript.test.ts

@@ -1,6 +1,5 @@
 import { execa } from 'execa';
 import path from 'node:path';
-import { afterAll, beforeAll, describe, expect, it } from 'vitest';
 
 import {
   AddonHelper,
@@ -13,6 +12,7 @@ for (let packageManager of SUPPORTED_PACKAGE_MANAGERS) {
   describe(`--typescript with ${packageManager}`, () => {
     let distDir = '';
     let declarationsDir = '';
+    let typeTestsDir = '';
     let helper = new AddonHelper({
       packageManager,
       args: ['--typescript'],
@@ -25,6 +25,7 @@ for (let packageManager of SUPPORTED_PACKAGE_MANAGERS) {
 
       distDir = path.join(helper.addonFolder, 'dist');
       declarationsDir = path.join(helper.addonFolder, 'declarations');
+      typeTestsDir = path.join(helper.addonFolder, 'type-tests');
     });
 
     afterAll(async () => {
@@ -34,15 +35,23 @@ for (let packageManager of SUPPORTED_PACKAGE_MANAGERS) {
     it('was generated correctly', async () => {
       await helper.build();
 
-      assertGeneratedCorrectly({ projectRoot: helper.projectRoot });
+      await assertGeneratedCorrectly({ projectRoot: helper.projectRoot });
+
+      let contents = await dirContents(helper.addonFolder);
+
+      expect(contents).to.include('type-tests');
+      expect(contents).to.include('tsconfig.json');
+
+      expect(await dirContents(typeTestsDir)).to.deep.equal(['index.test.ts', 'tsconfig.json']);
     });
 
     // Tests are additive, so when running them in order, we want to check linting
     // before we add files from fixtures
     it('lints all pass', async () => {
-      let { exitCode } = await helper.run('lint');
+      let { exitCode, stdout } = await helper.run('lint');
 
       expect(exitCode).toEqual(0);
+      expect(stdout).to.include('lint:type-tests');
     });
 
     it('build and test', async () => {

tests/smoke-tests/defaults.test.ts

@@ -65,7 +65,12 @@ for (let packageManager of SUPPORTED_PACKAGE_MANAGERS) {
     });
 
     it('was generated correctly', async () => {
-      assertGeneratedCorrectly({ projectRoot: helper.projectRoot });
+      await assertGeneratedCorrectly({ projectRoot: helper.projectRoot });
+
+      let contents = await dirContents(helper.addonFolder);
+
+      expect(contents).to.not.include('type-tests');
+      expect(contents).to.not.include('tsconfig.json');
     });
 
     // Tests are additive, so when running them in order, we want to check linting

tests/vitest.config.ts

@@ -6,5 +6,6 @@ export default defineConfig({
   test: {
     testTimeout: 60 * ONE_SECOND,
     hookTimeout: 150 * ONE_SECOND,
+    exclude: ['fixtures/**/*'],
   },
 });