On Mar 28, 2008, at 1:46 PM, David Chelimsky wrote:
> On Fri, Mar 28, 2008 at 1:38 PM, Chuck Remes
> <[EMAIL PROTECTED]> wrote:
>> I'm trying to use a mock to return a hash so that #each_pair can
>> process it. I can't get it to work. Whatever I return to #each_pair
>> is
>> ignored and the block never gets executed. Here's an example
>> illustrating the problem.
>>
>> require File.join(File.dirname(__FILE__), %w[spec_helper])
>>
>> class MyExample
>> attr_reader :result
>>
>> def example(data)
>> data.each_pair do |key, value|
>> @result = {key => value}
>> end
>> end
>> end
>>
>> describe MyExample, "mock#each_pair fails" do
>> it "should return a hash after processing the mock using each_pair"
>> do
>> sample_mock = mock("sample")
>> real_hash = {:key => :value}
>> sample_mock.should_receive(:each_pair).once.and_return(real_hash)
>> obj = MyExample.new
>> obj.example(sample_mock)
>> obj.result.should == real_hash
>> end
>> end
>
> each_pair does not return the hash, it yields it to a block. Try this:
>
> sample_mock.should_receive(:each_pair).once.and_yield(real_hash)
Dave,
thanks for the hint. That almost worked but I got this error:
Spec::Mocks::MockExpectationError in 'MyExample mock#each_pair fails
should return a hash after processing the mock using each_pair'
Mock 'sample' yielded |{:key=>:value}| to block with arity of 2
Changing it slightly allowed it to work correctly:
describe MyExample, "mock#each_pair fails" do
it "should return a hash after processing the mock using each_pair"
do
sample_mock = mock("sample")
real_hash = {:key => :value}
sample_mock
.should_receive(:each_pair).once.and_yield(real_hash.keys.first,
real_hash.values.first)
obj = MyExample.new
obj.example(sample_mock)
obj.result.should == real_hash
end
end
Thanks for your help. SrBaker has been enriched as a result. :-)
cr
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