Question

Each time I add in the correct code, it gives me the same error due to AboutMethods:0x00000101841a28 number changing each time. It’s like its stuck and I don’t know how to get out this loop. It worked once, then I went on to the next step, but then it triggered an error after that.

I must not be inputting the correct line of code given from the console?

def test_calling_private_methods_with_an_explicit_receiver
exception = assert_raise(NoMethodError) do
  self.my_private_method
end
assert_match "private method `my_private_method' called for #<AboutMethods:0x000001008debf8>", exception.message

end

The AboutMethods:0x000001008debf8 changes each time, not sure how to approach this problem?

Answer 1

AboutMethods:0x... is the output of the inspect method, which usually (and in this case) includes the class name (AboutMethods) and the object id (0x...). The object id is related to the objects location in memory, so it will change every time.

In my experience, there is very little value to checking the string from an exception (it’s brittle). However, if you feel the need, use a regex:


assert_match /private method `my_private_method' called for \#\<AboutMethods:.*/