If you have a problem with some failing specs it is enough to just print out some variables and statements. But sometimes the problem is a little bit more complicated to handled this way. There the ruby debugger could by of help. Here is how you can do use it within your specs:
ruby-debug gem if you haven't already. But problably you do not need it. Then start
-d parameter to allow debugging and in your code, just add
debugger at the point you want to set the breakpoint. That's it.
describe "test me" do
it "does something" do
some_var = "print me"
false.should be true
Running the test would now open a debugger command line where you can put in the usual ruby-debug commands, here are some, to get you started:
l= # will print the ruby code of the line you are in
# including some lines before and after to give
# more context
p some_var # would print the value of some_var
c # would continue the test as usual
n # would go to the next step
s # would step into the method you are about to call
And here you get more infos about ruby-debug including a list of all available commands.