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Cucumber and binding.pry problems... RESOLVED

(Jon Seidel) #1

I’m having problems getting some binding.pry calls to work when running cucumber tests: some work, some don’t.

If I call binding.pry directory from a step, as in:

When(/^I pry$/) do

That works just fine and I’m put into Pry interactive mode as expected.

If I call a routine which has a binding.pry down in the bowels of my code from a step:

When(/^I test my call$/) do

That also works fine. I’m dropped into Pry at the expected point inside the enroll method.

However, if I have dropped into Pry as in the first case and then type:


the binding.pry inside the enroll method is silently ignored.

What the heck am I missing here? Older versiona (we were on JRuby 1.9.3 until very recently; we are now on Ruby 2.0.0) worked just fine. I had to upgrade from pry-nav to pry-byebug for the 2.0 upgrade.

I’ve searched high and low for pointers about this issue. The only thing I am guessing is that some module is capturing STDIN and/or STDOUT and causing this problem?

Any pointers for finding a solution would be greatly appreciated!


Naturally, as soon as I poted this, I found what was happeneing: pry-byebug doesn’t support sub-debuggers or nested debugging. Invoking a method while in a pry session is a sub-debugger and is not supported <sigh>. A common workflow of mine when figuring out how things work is to start a pry session, sprinkle a few binding.pry statements, and then call the methods I’m researching.

If anyone else is interested in this, I’ve added on to an existing issue: https://github.com/deivid-rodriguez/pry-byebug/issues/71. Additional comments requesting the ability to nest debugger calls would help move this forward.