带有 TypeOrm 实体的 ts-jest 中的单元测试

Question

我正在尝试编写测试，但出现错误。 我想我的连接有问题。 “由于尚未建立连接，因此无法对“默认”连接执行操作。”

我有测试文件夹，其中有user.spec.ts和testhelper.ts

测试助手.ts

// import { Connection, createConnection } from "typeorm";
import { DataSource, DataSourceOptions } from "typeorm";

import Database from "better-sqlite3";

export class TestHelper {
  private static _instance: TestHelper;

  private constructor() {}

  public static get instance(): TestHelper {
    if (!this._instance) this._instance = new TestHelper();

    return this._instance;
  }

  private dbConnect!: DataSource;
  private testdb!: any;
  async setupTestDB() {
    this.testdb = new Database(":memory:", { verbose: console.log });

    this.dbConnect = new DataSource({
      name: "default",
      type: "better-sqlite3",
      database: ":memory:",
      entities: ["src/entity/**/*.ts"],
      synchronize: true,
    } as DataSourceOptions);
  }

  teardownTestDB() {
    this.dbConnect.destroy();
    this.testdb.close();
  }
}

用户.spec.ts

import { createUser } from "../src/controllers/user.controller";
//@ts-ignore
import { TestHelper } from "./testhelper";

beforeAll(async () => {
  await TestHelper.instance.setupTestDB();
});

afterAll(() => {
  TestHelper.instance.teardownTestDB();
});

describe("User Tests", () => {
  test("should create user", async () => {
    const body = {
      firstname: "John",
      lastname: "Brut",
      email: "john@examle.com",
      password: "password123",
    };
    const res = {};
    //@ts-ignore
    const user = await createUser(body, res);
    //@ts-ignore
    expect(user.firstname).toBe("John");
    //@ts-ignore
    expect(user.lastname).toBe("Brut");
  });
});

我是第一次这样做。 并且坚持了很长时间......有人可以帮我解决这个问题...... :(

Answer 1

试试这个方法，testhelper.ts

  async setupTestDB() {
    this.testdb = new Database(":memory:", { verbose: console.log });

    this.dbConnect = new DataSource({
      name: "default",
      type: "better-sqlite3",
      database: ":memory:",
      entities: ["src/entity/**/*.ts"],
      synchronize: true,
    } as DataSourceOptions);
    await this.dbConnect.initialize()
  }