.then 在承諾解決之前觸發

Question

我正在使用 mocha 和 supertest 在 Node 中編寫集成測試，並且必須在數據庫中創建用戶。 我的問題是有時用戶會在測試完成后得到保存。 這是我的用戶創建功能：

async function createUser() {
  const userParam = {
    username: "User",
    password: "123456789",
    firstName: "Max",
    lastName: "Mustermann",
    role: JSON.stringify(Role.User),
  };
  const user = new User(userParam);

  user.hash = bcrypt.hashSync(userParam.password, 10);

  await user.save();
  console.log("User saved!");
}

這是測試：

it("respond with 403 forbidden, because a standard user cant delete other users", function (done) {
        createUser().then(
          login(userLoginData).then((responseBody) => {
            request(app)
              .delete("/users/0000000000006204aefc242c")
              .set(
                "Authorization",
                `Bearer ${responseBody.body.accessToken}`,
              )
              .expect(
                403,
                {
                  Error: "Forbidden",
                  message:
                    "Forbidden for your rank, if its not your own account.",
                },
                done,
              );
          }),
        );
      });

這是我從 mocha 得到的輸出：

  DELETE /
          Successes
    Admin saved!
    User saved!
          ✓ respond with 200 ok, because admins are allowed to delete all users (431ms)
    User saved!
          ✓ respond with 200 ok, because he is allowed to delete himself (195ms)
          Errors
            1) respond with 403 forbidden, because a standard user cant delete other users
    User saved!

前兩個測試正在完成，因為在測試之前創建了所需的帳戶，但最后一個測試（如上所示）失敗了。

這是當前 github 分支中文件的鏈接： https : //github.com/Knniff/loginbackend/blob/2fa/test/tests.js

我很高興收到所有反饋，如果您有更好的方法來做這些准備工作，我很想聽聽。

Answer 1

測試的第 2 行有問題。 在createUser()函數之后，您不會等待 promise 立即解析並調用login() createUser()函數。 您應該將login()函數調用包裝到箭頭函數() => login(userLoginData) 。 您可以對測試進行以下更改：

      it("respond with 403 forbidden, because a standard user cant delete other users", function (done) {
        createUser()
          .then(() => login(userLoginData))
          .then((responseBody) => {
            request(app)
              .delete("/users/0000000000006204aefc242c")
              .set(
                "Authorization",
                `Bearer ${responseBody.body.accessToken}`,
              )
              .expect(
                403,
                {
                  Error: "Forbidden",
                  message:
                    "Forbidden for your rank, if its not your own account.",
                },
                done,
              );
          });
      });

編輯：

另外，我建議在您的測試中使用 async/await：

it("respond with 403 forbidden, because a standard user cant delete other users", async function () {
  await createUser();
  const responseBody = await login(userLoginData);
  await request(app)
    .delete("/users/0000000000006204aefc242c")
    .set(
       "Authorization",
       `Bearer ${responseBody.body.accessToken}`,
    )
    .expect(
       403,
       {
         Error: "Forbidden",
         message: "Forbidden for your rank, if its not your own account."
       }
    );
 
});