RSPEC failed with email formats - ruby-on-rails

Question

I have been browsing the Rails tutorial with putting together the user account and running tests on it for the project I am working on.
Failures:
1) when email format is invalid should be invalid
Failure/Error: #user.email = invalid_address
NoMethodError:
undefined method `email=' for nil:NilClass
# ./spec/models/user_spec.rb:71:in `block (3 levels) in <top (required)>'
# ./spec/models/user_spec.rb:70:in `each'
# ./spec/models/user_spec.rb:70:in `block (2 levels) in <top (required)>'
2) when email format is valid should be valid
Failure/Error: #user.email = valid_address
NoMethodError:
undefined method `email=' for nil:NilClass
# ./spec/models/user_spec.rb:81:in `block (3 levels) in <top (required)>'
# ./spec/models/user_spec.rb:80:in `each'
# ./spec/models/user_spec.rb:80:in `block (2 levels) in <top (required)>'
Finished in 0.527 seconds
9 examples, 2 failures
Failed examples:
rspec ./spec/models/user_spec.rb:67 # when email format is invalid should be invalid
rspec ./spec/models/user_spec.rb:78 # when email format is valid should be valid
I have no clue what the problem is. I see what it says, but I even C&P the code from the tutorial to double check what I did to ensure everything was type properly.
Here's the user_spec file.
https://gist.github.com/pwz2k/4770845
Here's the user.rb file.
https://gist.github.com/pwz2k/4770854
The fails did not appear until I added the email validation.

Answer 1

Make sure that you're creating #user before you start testing it.. do you have these lines in your User test? (rails tutorial listing 6.16)
before do
#user = User.new(name: "Example User", email: "user#example.com")
end

Answer 2

The error is very clear!. You're setting email to nil class. Which means you're supposed to set the email to a user which we say
#user.email = "something"
The error is complaining there is no user, and there won't be any email for user.
To make is work here is an example code which will help you to fix this issue.
describe "validations" do
before(:each) do
#user = User.new(name: "gates", email: "somename#gmail.com")
end
it "should be invalid" do
invalid_emails = %w{gs#gmail p.com name.gmail.com foo.ymail}
invalid_emails.each do |invalid_email|
#user.email = invalid_email
expect(#user.email).to_not be_valid
end
end
it "should be valid" do
#user.name = "somename"
valid_emails = %w{user#foo.COM A_US-ER#f.b.org frst.lst#foo.jp
a+b#baz.cn}
valid_emails.each do |valid_email|
#user.email = valid_email
expect(#user.email).to be_valid
end
end
end
Please be make sure you've created a fixure for user in your fixures folder.
Hope this helps!