Hi David, On Oct 25, 2010, at 11:23 AM, David Chelimsky wrote:
> On Oct 25, 2010, at 3:20 AM, Haim Ashkenazi wrote:
>
>> Hi Zach,
>>
>> On Oct 24, 2010, at 11:04 PM, Zach Dennis wrote:
>>
>>>
>>>
>>> On Sun, Oct 24, 2010 at 11:21 AM, Haim Ashkenazi <haim.ashken...@gmail.com>
>>> wrote:
>>> Hi
>>>
>>> I wonder why this stub doesn't work:
>>>
>>> # ruby 1.8.7, rspec 2.0.1
>>> require 'rubygems'
>>> require 'rspec'
>>>
>>> Rspec.configure do |c|
>>>
>>> c.mock_with :rspec
>>> end
>>>
>>> class SayHello
>>> def say_hello
>>> "hello"
>>> end
>>> end
>>>
>>> describe "test string" do
>>> it "should interpret stub correctly" do
>>> SayHello.stub!(:say_hello).and_return('NO')
>>>
>>> sh = SayHello.new()
>>> sh.say_hello.should eql('NO')
>>> end
>>> end
>>> In your example you are stubbing a class method. In your implementation you
>>> have defined an instance method. To have this work for your given
>>> implementation you need to know about the instance you are working with, ie:
>>>
>>> it "should interpret stub correctly" do
>>> sh = SayHello.new()
>>> sh.stub!(:say_hello).and_return 'NO'
>>> sh.say_hello.should eql('NO')
>>> end
>>>
>>> Hope this helps,
>>
>> Thanks for your help. I've found in the archives that you have to use mocha
>> to do these kind of things.
>
> This is incorrect. You are free to use mocha, but rspec-mocks, RR, and
> flexmock are all perfectly capable of stubbing class methods, so you don't
> _have_ to use mocha.
Sorry, I didn't mean it this way. I actually tried it with RR and mocha and for
some reason it didn't work for me (see next comment).
>
>> I tried a different approach (to mock the initializer) but although this
>> works on a simple setup, it didn't work for me on my real classes.
>
> What Zach suggested is the correct approach. What problem are you seeing when
> you try it?
The problem I'm trying to solve is a little more complicated then the example.
I've sent a new email with a better description of the problem here:
http://rubyforge.org/pipermail/rspec-users/2010-October/018571.html
Somehow the links are not displayed (I've sent a follow-up message but it's not
in the archive yet), so here they are:
The repository is here: http://github.com/babysnakes/runssh
The spec with the problem is
http://github.com/babysnakes/runssh/blob/5197b763f391d6d358ca7bc5838375c9247271d8/spec/runsshlib/cli_spec.rb
(line 127).
The problem is that I have a SshBackend class which initializes with arguments.
It also has a shell method which invokes exec. The SshBackend is invoked from
the CLI class. I was trying to make sure that :new was called with the correct
arguments and that :shellI is executed. One way would be to mock the :shell
method (this email was about that) so that :exec would not be called and the
other was to mock the :new method and return a mocked object (my second email).
Somehow, non of these works for me.
Thanks in advance
Haim
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