Fix: allow and_error matcher to use RSpec matcher as and_value does

[bvicenzo]

as and_value matcher on success, and_error, now allow to pass a matcher instead a value to be compared using equality:

Ex:

Before:

expect(User::Create.(username: 'bruno', email: 'invalid@'))
  .to have_failed_with(:invalid_user)
  .and_error(?) # very hard to compare without mocking

After:

expect(User::Create.(username: 'bruno', email: 'invalid@'))
  .to have_failed_with(:invalid_user)
  .and_error(be_a(User))

# Or

expect(User::Create.(username: 'bruno', email: 'invalid@'))
  .to have_failed_with(:invalid_user)
  .and_error(have_attributes(email: 'invalid@'))

[euricovidal]

🚀