I think it's because you're are telling your method to select randomly and
sequentially. That's why you get different string values than what you
expect in your spec.
Here:
(0..length).map{ rand(36).to_s(36) }.join
you're are taking random values and then joining them.. with random
selected values, it's pretty unusual that you'll get back an ordered
sequential string like "abcdef".
Hope this helps.
On Sat, Mar 16, 2013 at 5:53 AM, Dan Brooking <[email protected]> wrote:
> I have a small Sinatra app I've been working on... I've been searching and
> found quite a few with this question but no real answers. I also posted
> this to the Sinatra group in case it's an issue there. I'm hoping it's
> something small that I'm doing wrong as I'm not too experienced in the art
> of stubbing.
>
> I have a helper method that returns a random string...
>
> def random_string(length)
> (0..length).map{ rand(36).to_s(36) }.join
> end
>
>
> I have my test written as follows:
>
> describe "#random_string" do
> it "returns a random string" do
>
> #Sinatra::Application.any_instance.stub(:random_string).and_return("abcdef")
>
> Sinatra::Application.should_receive(:random_string).with(6).and_return('abcdef')
> str = random_string(6)
> str.should == "abcdef"
> end
> end
>
>
> I have tried both lines shown in the code, and both times, the code runs.
> Yet my tests are still failing. It doesn't look like the stub is taking.
> My failure looks like:
>
> #random_string returns a random string
> Failure/Error: str.should == "abcdef"
> expected: "abcdef"
> got: "xcz0g7a" (using ==)
>
> Any ideas?
>
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