running all test causes a "connection lost"

[ekeren]

When trying to run all test for this code (playground link)

I get the following:

When running one by one it works ok.

Here is the code:

bring cloud;
bring util;
bring expect;
bring http;

struct BookRequest {
  title: str;
  author: str;
}
struct BookResposne extends BookRequest { 
  bookID: str;
  createdAt: str;
}

let api = new cloud.Api();

api.post("/books", inflight (req: cloud.ApiRequest) => {
  try {
    let bookRequest = BookRequest.parseJson(req.body!);
    let response = BookResposne {
          bookID: util.uuidv4(),
          title: bookRequest.title,
         author: bookRequest.author,
         createdAt: "2024-04-14"
    };
    return {
      status: 200, 
      body: Json.stringify(response)
   };
  } catch e {
    return {
      status: 400,
      body: e
    };
  }
});
  


test "POST /books should return 200 with correct body " {
  let body = Json.stringify({title: "A Title", author: "An Author"});

  let result = http.post("{api.url}/books", { body: body });

  expect.equal(result.status, 200);
}

test "POST /books should return 400 without body " {

  let result = http.post("{api.url}/books");

  expect.equal(result.status, 400);
}

test "POST /books should return 400 with empty body " {
  let body = Json.stringify({});

  let result = http.post("{api.url}/books", { body: body });

  expect.equal(result.status, 400);
}

test "POST /books should return 400 without title " {
  let body = Json.stringify({ author: "An Author"});

  let result = http.post("{api.url}/books", { body: body });

  expect.equal(result.status, 400);
}

test "POST /books should return 400 without author " {
  let body = Json.stringify({title: "A Title" });

  let result = http.post("{api.url}/books", { body: body });

  expect.equal(result.status, 400);
}