@ingeze/api-error/dist/test/handlers/fastify.test.js

A TypeScript library for handling HTTP errors in Express, NestJS, and Fastify APIs.

import { ErrorHandler } from "src/errors";
import { fastifyErrorMiddleware } from "src/handlers/fastify";
describe("Error instanceof ErrorHandler", () => {
  let req;
  let reply = {
    code: jest.fn().mockReturnThis(),
    send: jest.fn().mockReturnThis()
  };
  beforeEach(() => {
    req = {};
    reply = {
      code: jest.fn().mockReturnThis(),
      send: jest.fn().mockReturnThis()
    };
  });
  it("custom error", () => {
    const err = new ErrorHandler("Custom error", 400, "CUSTOM_ERROR", { id: 1, info: "Custom error" });
    fastifyErrorMiddleware(err, req, reply);
    expect(reply.code).toHaveBeenCalledWith(err.statusCode);
    expect(reply.send).toHaveBeenCalledWith(err.toJSON());
  });
  it("generic error", () => {
    const err = new Error("Unexpected error");
    fastifyErrorMiddleware(err, req, reply);
    expect(reply.code).toHaveBeenCalledWith(500);
    expect(reply.send).toHaveBeenCalledWith({
      success: false,
      type: "INTERNAL_SERVER_ERROR",
      statusCode: 500,
      message: "Unexpected error"
    });
  });
});
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