Sorry. Test comment is incorrect.
This is intentional test.
require 'rspec'
class Ary
attr_reader :ary
def initialize
@count = 0
@ary = []
increment
end
def increment
@ary << @count
@count += 1
end
end
describe Ary, "#ary" do
subject{ Ary.new }
it "should increment the ary" do
# expect { subject.increment }.to change(subject, :ary).from([0]).to([0,1])
subject.ary.should == [0]
subject.increment
subject.ary.should == [0,1]
end
end
On Mon, Mar 21, 2011 at 10:41 AM, niku -E:) <[email protected]> wrote:
> I understand that "expect{}.to change()" can't test "destructive method".
> So, I should write test like that. correct?
>
> require 'rspec'
>
> class Ary
> attr_reader :ary
> def initialize
> @count = 0
> @ary = []
> increment
> end
> def increment
> @ary << @count
> @count += 1
> end
> end
>
> describe Ary, "#ary" do
> subject{ Ary.new }
> it "should increment the ary" do
> # expect { subject.increment }.to change(subject, :ary).from([]).to([0])
> subject.ary.should == [0]
> subject.increment
> subject.ary.should == [0,1]
> end
> end
>
> On Wed, Mar 16, 2011 at 2:41 AM, Justin Ko <[email protected]> wrote:
>>
>>
>> On Tue, Mar 15, 2011 at 10:08 AM, Justin Ko <[email protected]> wrote:
>>>
>>>
>>> On Tue, Mar 15, 2011 at 8:57 AM, niku -E:) <[email protected]> wrote:
>>>>
>>>> Hi.
>>>>
>>>> I'm using ruby1.9.2 and rspec2.5.1
>>>> I want to use "expect{}.to change().from().to()" like this
>>>>
>>>> https://gist.github.com/870897
>>>>
>>>> When Int class, it passed.
>>>> When Ary class, it failed.
>>>>
>>>> Why was Ary test failed and How do I pass this test?
>>>>
>>>> regards.
>>>> _______________________________________________
>>>> rspec-users mailing list
>>>> [email protected]
>>>> http://rubyforge.org/mailman/listinfo/rspec-users
>>>
>>> Your Ary @ary variable is initialized as "[]". So of course calling
>>> increment on it will change it to "[0]". For your spec to pass, initialize
>>> it as "[0]"
>>
>> I'm completely wrong. Didn't read your code properly. Where is the delete
>> link? :)
>
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