Add integration test

src/test/integration/oauth-test.ts

@@ -162,6 +162,27 @@ describe('oauth/', function () {
     customCallbackHandler = customCallbackHandlerProvided || null;
   }
 
+  it('serves OAuth metadata', async () => {
+    const res = await chai
+      .request(server)
+      .keepOpen()
+      .get('/.well-known/oauth-authorization-server')
+      .set('Accept', 'application/json');
+    expect(res.status).toEqual(200);
+    expect(res.body).toHaveProperty('issuer');
+    expect(res.body).toHaveProperty('authorization_endpoint');
+    expect(res.body.authorization_endpoint).toEqual(expect.stringContaining('authorize'));
+    expect(res.body).toHaveProperty('token_endpoint');
+    expect(res.body.token_endpoint).toEqual(expect.stringContaining('token'));
+    expect(res.body).toHaveProperty('response_types_supported');
+    expect(res.body.response_types_supported.length).toEqual(1);
+    expect(res.body.response_types_supported[0]).toEqual('code');
+    expect(res.body).toHaveProperty('scopes_supported');
+    expect(res.body.scopes_supported.length).toEqual(2);
+    expect(res.body.scopes_supported).toContain('/things');
+    expect(res.body.scopes_supported).toContain('/things:readwrite');
+  });
+
   it('performs simple authorization', async () => {
     setupOAuth();