airpay-correlationid-middleware/test/index.js

correlationid middleware

const chai = require('chai');
const middleware = require('../index');

const { expect } = chai;
const noopFn = () => {};

describe('Middleware', () => {
  it('should not be undefined', () => {
    expect(middleware).not.undefined;
  });

  it('should be a equal to function', () => {
    expect(typeof (middleware)).to.eq('function');
  });

  it('should return true x-coreplatform-correlationid is defined in header', async () => {
    const request = {
      headers: {
        'x-coreplatform-correlationid': 'b7be7d00-6b20-11e8-84b4-b5b4862f001b',
      },
    };

    const isBoolean = middleware(request, {}, noopFn);

    expect(isBoolean).equal(true);
  });

  it('should return x-coreplatform-correlationid  value in headers if already exists', async () => {
    const request = {
      headers: {
        'x-coreplatform-correlationid': 'b7be7d00-6b20-11e8-84b4-b5b4862f001b',
      },
    };

    middleware(request, {}, noopFn);

    expect(request.headers['x-coreplatform-correlationid']).to.be.equal('b7be7d00-6b20-11e8-84b4-b5b4862f001b');
  });

  it('should return new x-coreplatform-correlationid value if not exists in headers', () => {
    const request = {
      headers: {},
    };

    middleware(request, {}, noopFn);

    expect(request.headers['x-coreplatform-correlationid']).not.to.be.undefined;
  });
});