validateRegisterForm.test.js

'use strict';

describe(`Function 'validateRegisterForm':`, () => {
  const validateRegisterForm = require('./validateRegisterForm');

  it(`should be declared`, () => {
    expect(validateRegisterForm).toBeInstanceOf(Function);
  });

  it(`should return object`, () => {
    expect(typeof validateRegisterForm('test@mail.com', 'P@ssword1!'))
      .toBe('object');
  });

  it(`should return success message for the valid input`, () => {
    const isValid = validateRegisterForm('test@mail.com', 'P@ssword1!');

    expect(isValid.code).toBe(200);
    expect(isValid.message).toBe('Email and password are valid.');
  });

  it(`should return error for valid email and password without number`, () => {
    const invalidPassword = validateRegisterForm('test@mail.com', 'P@ssword');

    expect(invalidPassword.code).toBe(422);
    expect(invalidPassword.message).toBe('Password is invalid.');
  });

  it(`should return error for valid password and wrong email`, () => {
    const invalidEmail = validateRegisterForm('testmail.com', 'P@ssword1!');

    expect(invalidEmail.code).toBe(422);
    expect(invalidEmail.message).toBe('Email is invalid.');
  });

  it(`should return error for invalid password and email`, () => {
    const invalidData = validateRegisterForm('testmail.com', 'P@ssword');

    expect(invalidData.code).toBe(500);
    expect(invalidData.message).toBe('Password and email are invalid.');
  });
});