Rspec Rails cheatsheet (include capybara matchers)

rspec_rails_cheetsheet.rb

#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)

#Capybara Matchers

response.body.should have_content("Hello world")
response.body.should have_no_content("Hello world")

response.body.should have_css("input#movie_title")
response.body.should have_css("input#movie_title", :value => "Twelve Angry Men")
response.body.should have_css("input", :count => 3) #True if there are 3 input tags in response
response.body.should have_css("input", :maximum => 3) # True if there or fewer or equal to 3 input tags 
response.body.should have_css("input", :minimum => 3) # True if there are minimum of 3 input tags 
response.body.should have_css("input", :between => 1..3) # True if there 1 to 3 input tags 
response.body.should have_css("p a", :text => "hello") # True if there is a anchor tag with text hello
response.body.should have_css("p a", :text => /[hH]ello(.+)/i) 
                                                   # True if there is a anchor tag with text matching regex

response.body.should have_xpath("//a")
response.body.should have_xpath("//a",:href => "google.com")
response.body.should have_xpath("//a[@href => 'google.com']")
response.body.should have_xpath("//a[contains(.,'some string')]")
response.body.should have_xpath("//p//a", :text => /re[dab]i/i, :count => 1)


# can take both xpath and css as input and can take arguments similar to both have_css and have_xpath
response.body.should have_selector(:xpath, "//p/h1")
response.body.should have_selector(:css, "p a#movie_edit_path")

# For making capybara to take css as default selector
Capybara.default_selector = :css
response.body.should have_selector("input")   #checks for the presence of the input tag
response.body.should have_selector("input", :value =>"Twelve Angry Men") # checks for input tag with value
response.body.should have_no_selector("input") 

# For making capybara to take css as default selector
Capybara.default_selector = :xpath
response.body.should have_selector("//input")   #checks for the presence of the input tag
response.body.should have_selector("//input", :value =>"Twelve Angry Men") # checks for input tag with value


# To access elements inside form 
response.body.should have_field("FirstName")  # checks for presence of a input field named FirstName in a form
response.body.should have_field("FirstName", :value => "Rambo")
response.body.should have_field("FirstName", :with => "Rambo")

response.body.should have_link("Foo")
response.body.should have_link("Foo", :href=>"googl.com")
response.body.should have_no_link("Foo", :href=>"google.com")

Hash rocket is not a valid XPath symbol (it leads to "Invalid expression" exception). Please use an "equals" sign: it should be "//a[@href = 'google.com']" instead of "//a[@href => 'google.com']".

This is a life saver, can I give you Karma or something?

This is useful, thanks!

However, regarding response.body.should have_css("input#movie_title", :value => "Twelve Angry Men"), :value is not actually a valid key for have_css, and :text doesn't actually match against the value attribute of input fields I've found.

You can either do something like have_css("input#movie_title[value=\"Twelve Angry Men\"]"), or user the have_field and :with key.

Is there a difference between should have_no_link("Foo", :href=>"google.com") and should_not have_link("Foo", :href=>"google.com")?

Thanks a lot for this! I have corrected a few typos in my fork of this gist. Maybe you want to incorporate them: https://gist.github.com/nerdinand/7787825

Really useful, thanks a lot!

Thank you for making this!

Nice cheetsheet. I user this sheet.thx.

Is it still up-to-date with current capybara version?

This works but using page.should instead of response.body.should

You'd better use the new :expect syntax like expect(page).to have_

With capybara 2.4.4, if you want to find a field with a value, use the following

  expect(page).to have_field("My Field", with: "the value in the field")

Hey I just started learning RSpec is there a tutorial while using these awesome cheatsheets?

Hi, this Gist is outdated - it still uses the "should" syntax.
In newer versions of Capybara, it was replaced by the "expect" syntax.

Hey, so with expect syntax and couple things that work different, hopefully helpful :)

https://gist.github.com/redrick/01a0ca575a99f264f1d8ab6a4c93cff0

(I was working from nerdinand fork)

Line 44 should be:
# To pass xpath as the default selector type