I found an alternate route, which may or may not work for others.
Instead of using Kernel#` (backquote / backtick), you might be able to
use Kernel#system. The difference:
Kernel#` returns the standard output of running the command in a subshell
Kernel#system returns true if the command was found and executed
successfully, otherwise false.
So, in my case, I used:
class Barcode
...
def raw_barcodes
self.make_temporary_copy
system("OcrBarcode #{self.temp_file_path}")
...
end
...
end
describe "Calling @barcode.raw_barcodes" do
before(:each) do
File.stub!(:exist?).and_return(true)
@barcode = Barcode.new('path/to/valid.pdf')
Kernel.stub!(:system).and_return(true)
FileUtils.stub!(:cp)
end
it "should make a copy of the file" do
@barcode.should_receive(:make_temporary_copy)
@barcode.raw_barcodes
end
...
end
Note, my spec has changed a bit since my original post, but the gist remains.
I hope this helps someone down the line.
If you have a better way of spec'ing calls to a subshell, I'd live to hear it.
/g
On 10/24/07, George Anderson <[EMAIL PROTECTED]> wrote:
> I'm trying to stub(!) the Kernel.` (backquote) method and I'm having
> confusing (to me) results. Here's the method I'm spec'ing:
>
> class Barcode
> ...
> def raw_barcodes
> self.make_temporary_copy
> `OcrBarcode #{self.temp_file_path}`
> end
> ...
> end
>
> And this is my (newbish) attempt at the spec:
>
> describe "Calling @barcode.raw_barcodes" do
> before(:each) do
> File.stub!(:exist?).and_return(true)
> @barcode = Barcode.new('path/to/valid.pdf')
> Kernel.stub!('`'.to_sym)
> end
> it "should make a copy of the file" do
> @barcode.should_receive(:make_temporary_copy)
> @barcode.raw_barcodes
> end
> it "should make a system call to OcrBarcode"
> it "should make the system call to OcrBarcode passing in the
> temporary copy of the file"
> it "should create foo.pdf.barcode"
> end
>
> When I run this (using cmd-d in the TM bundle), the test passes, but I
> get this line injected about the green "should make a copy of the
> file":
>
> /Users/george/work/simplify_md/vendor/plugins/rspec/lib/spec/mocks/proxy.rb:129:
> command not found: OcrBarcode
> /Users/george/work/simplify_md/tmp/valid_2007_10_24_111354_EDT.pdf
>
> (all one line)
>
>
> Significantly, if I remove the stub (Kernel.stub!('`'.to_sym)), I get
> the same result: passing with the same "command not found" message.
>
> Is there an accepted way to stub subshell calls?
>
> Thanks,
>
> /g
>
> --
>
> George Anderson
>
> BenevolentCode LLC
> O: (410) 461-7553
> C: (410) 218-5185
>
> [EMAIL PROTECTED]
>
--
George Anderson
BenevolentCode LLC
O: (410) 461-7553
C: (410) 218-5185
[EMAIL PROTECTED]
_______________________________________________
rspec-users mailing list
rspec-users@rubyforge.org
http://rubyforge.org/mailman/listinfo/rspec-users
