@ingeze/api-error/dist/test/errors/error-handler.test.js

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

import { ErrorHandler } from "src/errors/error-handler";
describe("ErrorHandler", () => {
  it("should create an instance with default values", () => {
    const error = new ErrorHandler("Default error");
    expect(error).toBeInstanceOf(ErrorHandler);
    expect(error.success).toBe(false);
    expect(error.statusCode).toBe(500);
    expect(error.type).toBe("GENERIC_ERROR");
    expect(error.message).toBe("Default error");
    expect(error.details).toBeUndefined();
  });
  it("should create an instance with custom values", () => {
    const details = { field: "email" };
    const error = new ErrorHandler("Not found", 404, "NOT_FOUND", details);
    expect(error.statusCode).toBe(404);
    expect(error.type).toBe("NOT_FOUND");
    expect(error.message).toBe("Not found");
    expect(error.details).toEqual(details);
  });
  it("should return correct JSON representation without details", () => {
    const error = new ErrorHandler("Unauthorized", 401, "UNAUTHORIZED");
    const json = error.toJSON();
    expect(json).toEqual({
      success: false,
      type: "UNAUTHORIZED",
      statusCode: 401,
      message: "Unauthorized"
    });
  });
  it("should return correct JSON representation with details", () => {
    const details = { reason: "token_expired" };
    const error = new ErrorHandler("Unauthorized", 401, "UNAUTHORIZED", details);
    const json = error.toJSON();
    expect(json).toEqual({
      success: false,
      type: "UNAUTHORIZED",
      statusCode: 401,
      message: "Unauthorized",
      details
    });
  });
  it('should set message to "Internal server error" if message is empty', () => {
    const error = new ErrorHandler("Internal server error");
    expect(error.message).toBe("Internal server error");
  });
});
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