Capybara test case for Login page authentication - ruby-on-rails

Question

I have capybara test case below.
it "Testing login page with valid data" do
fill_in 'email', with: 'kiran#gmail.com'
expect(page).to have_selector("input[value='kiran#gmail.com']")#Checking values are inserted in email field
fill_in 'password', with: 'Kiran.6565'
expect(page).to have_selector("input[value='Kiran.6565']")#Checking values are inserted in password field
click_button('submit')
expect(current_path).to eql(patient_detail_path(4))
end
I am checking Login page once the email and password fields are matches it should redirect to patient_details_path with id field value. In above code i specified email and password is working fine for manual login, but problem is in test case. Expected result: it should redirect to another page(patient_details_path) but it redirecting to home page(/) again.
Failures:
1) Login Page Interface Test login page with valid data
Failure/Error: expect(current_path).to eql(patient_detail_path(4))
expected: "/patient_details/4"
got: "/"
(compared using eql?)
# ./spec/views/login_spec.rb:41:in `block (2 levels) in <top (required)>'
Finished in 1.08 seconds (files took 2.13 seconds to load)
14 examples, 1 failure
I tried different solution's from stackoverflow but nothing work for me. Below are the different solution's tried.
#expect(current_path).to eql(patient_detail_path(4))
#expect(page).to have_current_path(patient_detail_path(4))
If email and password mismatch it will throw an error and redirect to login page again. In my scenario it was throwing an error even if email and password are valid . If i add below code in my test case it will work pass the test case.
#expect(page).to have_content "Invalid username/password combination"
Any one please help me i am new to ruby on rails and capybara.

Answer 1

I'm guessing the test you're trying to write should be written something like
before :each do
#user = # Create the required user with whatever method you're using
#patient = # Create the required patient with whatever method you're using
end
it "Logs in with valid data" do
visit(patient_detail_path(#patient)) # gets redirected to the login path
fill_in 'email', with: 'kiran#gmail.com'
fill_in 'password', with: 'Kiran.6565'
click_button('submit')
expect(page).to have_current_path(patient_detail_path(#patient))
end
That's a general guess and might not be 100% correct (tough to guess exactly what you're trying to do with half the test missing - the before block - from your question) but the general parts should be there. Since yours isn't logging in I'm guessing you're not actually creating a valid user with the given email and password, or you don't have a patient created with an id of 4 (you really shouldn't be relying on testing specific id numbers in feature tests though).
Additionally, you should always use the have_current_path matcher when checking for a given path/url since it will prevent test flakiness and since it's not a view test it shouldn't be in spec/views/login_spec.rb, more appropriate would be spec/features/login_spec.rb.

Answer 2

It seems to me that the driver is capturing the URL before Rails has a chance to update the URL to reflect the new page.
Asserting on URL is hard after performing a navigation change as a race condition might appear. I would suggest:
Assert on some other piece of info that could verify the user successfully logged in.
Assert using the wait option.
expect(page).to have_current_path(patient_detail_path(#patient), wait: 3)