test(backend): APIテストの復活 (#10163)

* Revert 1c5291f818

* APIテストの復活

* apiテストの移行

* moduleNameMapper修正

* simpleGetでthrowしないように

status確認しているので要らない

* longer timeout

* ローカルでは問題ないのになんで

* case sensitive

* Run Nest instance within the current process

* Skip some setIntervals

* wait for 5 seconds

* kill them all!!

* logHeapUsage: true

* detectOpenHandlesがじゃましているらしい

* maxWorkers=1?

* restore drive api tests

* workerIdleMemoryLimit: 500MB

* 1024MiB

* Wait what

packages/backend/test/e2e/api.ts

@@ -0,0 +1,83 @@
+process.env.NODE_ENV = 'test';
+
+import * as assert from 'assert';
+import { signup, api, startServer } from '../utils.js';
+import type { INestApplicationContext } from '@nestjs/common';
+
+describe('API', () => {
+	let p: INestApplicationContext;
+	let alice: any;
+	let bob: any;
+	let carol: any;
+
+	beforeAll(async () => {
+		p = await startServer();
+		alice = await signup({ username: 'alice' });
+		bob = await signup({ username: 'bob' });
+		carol = await signup({ username: 'carol' });
+	}, 1000 * 60 * 2);
+
+	afterAll(async () => {
+		await p.close();
+	});
+
+	describe('General validation', () => {
+		test('wrong type', async () => {
+			const res = await api('/test', {
+				required: true,
+				string: 42,
+			});
+			assert.strictEqual(res.status, 400);
+		});
+
+		test('missing require param', async () => {
+			const res = await api('/test', {
+				string: 'a',
+			});
+			assert.strictEqual(res.status, 400);
+		});
+
+		test('invalid misskey:id (empty string)', async () => {
+			const res = await api('/test', {
+				required: true,
+				id: '',
+			});
+			assert.strictEqual(res.status, 400);
+		});
+
+		test('valid misskey:id', async () => {
+			const res = await api('/test', {
+				required: true,
+				id: '8wvhjghbxu',
+			});
+			assert.strictEqual(res.status, 200);
+		});
+
+		test('default value', async () => {
+			const res = await api('/test', {
+				required: true,
+				string: 'a',
+			});
+			assert.strictEqual(res.status, 200);
+			assert.strictEqual(res.body.default, 'hello');
+		});
+
+		test('can set null even if it has default value', async () => {
+			const res = await api('/test', {
+				required: true,
+				nullableDefault: null,
+			});
+			assert.strictEqual(res.status, 200);
+			assert.strictEqual(res.body.nullableDefault, null);
+		});
+
+		test('cannot set undefined if it has default value', async () => {
+			const res = await api('/test', {
+				required: true,
+				nullableDefault: undefined,
+			});
+			assert.strictEqual(res.status, 200);
+			assert.strictEqual(res.body.nullableDefault, 'hello');
+		});
+	});
+});