[rspec-users] rspec 1 - nested examples (in an each block) use the final block variable 4 times instead of each of the 4 once

David Chelimsky dchelimsky at gmail.com
Wed Jul 28 20:22:55 EDT 2010


On Jul 28, 2010, at 5:42 PM, nruth wrote:

> Please correct me if this is fixed in Rspec 2, but in Rspec 1 I have
> hit upon the following problem (at least thrice, this time it costing
> me several hours), code is the best example:
> 
> I have a practice examination system where each record is one of
> several "subtests" (think tagging rather than subclassing) which is
> part of a constant string array. I want to test each's behaviour
> indepently in my specs (since an earlier implementation used STI
> rather than tagging, and I want to test each kind of test follows the
> spec)
> 
> My specs use this approach in parts:
> 
> describe "#add_question_set_of_type" do
>  MyModule::SUBTESTS.each do |subtest|
> 
>    describe %Q("#{subtest}") do
>    … specs using subtest
>  end
> end
> 
> where SUBTESTS is a constant array of strings.
> 
> the problem is doing this breaks any blocks that look like

Where are these blocks, in the outer or inner example group? Please provide a complete example, including everything I need to run and see the output you're seeing.

Thx


> 
>  let(:subtest) {MyModule.subtest_to_sym(subtest)}
> 
> or
> 
>  before(:each) do
>    @subtest = MyModule.subtest_to_sym(subtest)
>  end
> 
> Instead I have to avoid the @ or let examples, and use the more
> explicit (verbose):
> 
>  MyModule.subtest_to_sym(subtest)
> 
> using the let or before @ approaches both fail.
> 
> Using puts within the code (for debugging purposes) I found that the
> specs were only being exposed to the final value of the array, while I
> expected (and have seen, or at least assumed from past passes) that
> all 4 (or so) of the strings were being used to create unique methods
> on the example group (one per iteration).
> 
> 
> Is this something that should be:
> 
> a. avoided, because it's crazy, and written differently
> b, documented
> c. investigated further
> 
> I can provide a more complete example if helpful?
> 
> Thanks,
> Nick
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