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POHow to test signup validation in rspec? (rails tutorial chapter 7 exercises)
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  1. POHow to test signup validation in rspec? (rails tutorial chapter 7 exercises)
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    copied!<p>I think this is as much a programming practice question as it is a technical question.</p> <p>I am doing the Ruby on Rails Tutorial and am up to the <a href="http://ruby.railstutorial.org/chapters/sign-up#sec-signup_exercises" rel="nofollow">Chapter 7 Exercises</a>, question 2. This question asks you to write tests that verify the error messages for an invalid user appear on the reloaded signup page (eg blank password, invalid email address).</p> <p>I have some code that works fine enough but I don't feel I'm actually testing anything. I have simply tested for the presence of the error messages that appeared when I manually entered a blank user into the signup page. Unsurprisingly, the tests pass - I simply copied and pasted the error messages into the tests!</p> <p>The relevant part of my <code>user_pages_spec.rb</code> are:</p> <pre><code>describe "signup" do before { visit signup_path } let(:submit) { "Create my account" } describe "with invalid information" do it "should not create a user" do expect { click_button submit }.not_to change(User, :count) end describe "after submission" do before { click_button submit } it { should have_selector('title',text: 'Sign up') } it { should have_content('error') } it { should have_content('Password digest can\'t be blank') } it { should have_content('Name can\'t be blank') } it { should have_content('Email can\'t be blank') } it { should have_content('Email is invalid') } it { should have_content('Password can\'t be blank') } it { should have_content('Password is too short (minimum is 6 characters)') } it { should have_content('Password confirmation can\'t be blank') } end end </code></pre> <p><strong>Is this the right way to do it? Shouldn't I be getting Ruby to tell me what the error messages / translations are, and testing those? What happens if I change one of my validation conditions, like password length?</strong> Similarly, when I fix the error message about Password Digest, should I have to change my testing file?</p> <p>Edit: <strong>What if I don't know what the exact error string will be?</strong> Shouldn't Ruby tell the test what the error message will be? <strong>Should I be using 'have(x).errors_on' for this?</strong>. </p>
 

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