On 19 Feb 2009, at 21:53, Zach Dennis wrote:
On Thu, Feb 19, 2009 at 4:24 PM, Matt Wynne <m...@mattwynne.net>
wrote:
On 19 Feb 2009, at 20:54, Martin wrote:
Hi,
I'm trying to test my views using rspec. I want to test my edit- and
new-view also for the case an error occurs (something like "title
can't be
blank" and so on).
Can someone point me please to an example where I can see how to
mock my
model and stub all methods needed for the view?
I guess this isn't exactly what you want to hear, but I would
counsel you
against mocking your whole model object for a form with lots of
fields -
those kind of 'broad' mocks can be very brittle to changes in your
domain
model.
Can you try using stub_model instead? This creates an instance of
your
actual model class, but with a crippled database connection. You
can then
create an invalid model object and throw it to the view. Something
like:
assigns[:book] = stub_model(Book, :title => '')
If your model is at all interesting, you might want to keep the
attributes
that make a valid Book somewhere:
valid_book = {
:title => "Test Book Title",
:author => "Test Author"
}
assigns[:book] = stub_model(Book, valid_book.merge(:title => ''))
I generally hide these behind a helper method, like
def stub_book(attributes = {})
stub_model Book, {
:title => "Test Book Title",
:author => "Test Author"
}.merge(attributes)
end
Why hide them behind a helper? Why not just only specify them in
examples where they are used? ie:
it "should display the book title" do
@book.stub!(:title).and_return "The Scarlet Letter"
render ...
response.should include_text("The Scarlet Letter")
end
Why hide them in a helper? because I don't want the noise of all the
attributes needed to make a valid book in each test.
@book = stub_book :title => "The Scarlet Letter"
This is basically the same pattern people use things like factory_girl
for, just using stub_model.
Matt Wynne
http://blog.mattwynne.net
http://www.songkick.com
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