New/user static tests

[the-vampiire]

Completed all tests for:

• hashPassword()
• verifyPassword()
• verifyAndHashPassword()
• register()

Simplified register() tests using method spies instead of mocks. We don't care what the method returns so much as we care that the User.create() Sequelize method was called with the correct inputs. Function/method spies provide us with this verification. See the changed tests for a better understanding of spying / the refactor.

created a testError() utility (in test_utils/) for testing thrown errors. there was too much duplicated and tedious code when testing the thrown errors.

/**
 * Tests the existence and shape of a thrown Error
 * @param {object} options Options to test for
 * @param {Error} options.error The Error object to test
 * @param {string} options.errorType The Type of Error (constructor name)
 * @param {string} options.message The expected Error message
 * @param {[string]} options.invalidArgs An Array of invalid arguments [Apollo Errors only]
 */
function testError(options) {
  const { error, errorType = "Error", message, invalidArgs } = options;

  expect(error).toBeDefined();
  expect(error.constructor.name).toBe(errorType);
  expect(error.message).toBe(message);
  if (invalidArgs) {
    expect(error.invalidArgs).toEqual(expect.arrayContaining(invalidArgs));
  }
}

[the-vampiire]

I tried fucking everything and no matter what the JSDocs on testError() do not carry over. What is the point of writing them if they don't show up when you go to import and use the function...

I don't fucking get it. Now I remember why I stopped writing them. So frustrating.