Question

Trying to get started on view testing in Rails 3. I want to validate that I have a form getting kicked out in the view that has the right URL for the action. So I am using assert_select. I actually got a failing test first, using this syntax in the spec (using Rspec):

response.should assert_select "form[action=#{my_model_path}]"

Looking at the rendered HTML, sure enough, the view was rendering the ‘edit’ url, not the ‘new’ url due to the wrong model being passed down. Groovy, start red.

I make the model a ‘new’ one, and I look at my rendered output, and it’s what I’d expect, BUT the test fails, and the error message says:

NoMethodError:
   undefined method `matches?' for #<Array:0x0000012a1a5d58>

I’ve looked all over the web for this, found one guy that mentioned the error, but got no resolution. Any ideas?

Answer 1

Figured out that I could get this to work by nesting my assert_select calls, like so:

response.should assert_select "form" do
    assert_select "[action=?]", my_model_path
end