test: app should not crash on requests to /

Regression test for 396ad181d0

Signed-off-by: David Mehren <git@herrmehren.de>

test/app.e2e-spec.ts

@@ -0,0 +1,58 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import { getConfigToken } from '@nestjs/config';
+import { Test } from '@nestjs/testing';
+import request from 'supertest';
+
+import { AppModule } from '../src/app.module';
+import { BackendType } from '../src/media/backends/backend-type.enum';
+
+describe('App', () => {
+  it('should not crash on requests to /', async () => {
+    const moduleRef = await Test.createTestingModule({
+      imports: [AppModule],
+    })
+      .overrideProvider(getConfigToken('appConfig'))
+      .useValue({
+        domain: 'localhost',
+        port: 3333,
+        loglevel: 'debug',
+      })
+      .overrideProvider(getConfigToken('mediaConfig'))
+      .useValue({
+        backend: {
+          use: BackendType.FILESYSTEM,
+          filesystem: {
+            uploadPath:
+              'test_uploads' + Math.floor(Math.random() * 100000).toString(),
+          },
+        },
+      })
+      .overrideProvider(getConfigToken('databaseConfig'))
+      .useValue({
+        storage: ':memory:',
+        dialect: 'sqlite',
+      })
+      .overrideProvider(getConfigToken('authConfig'))
+      .useValue({
+        session: {
+          secret: 'secret',
+        },
+      })
+      .compile();
+
+    /**
+     * TODO: This is not really a regression test, as it does not use the
+     * real initialization code in main.ts.
+     * Should be fixed after https://github.com/hedgedoc/hedgedoc/issues/2083
+     * is done.
+     */
+    const app = moduleRef.createNestApplication();
+    await app.init();
+    await request(app.getHttpServer()).get('/').expect(404);
+    await app.close();
+  });
+});