Thank you so far! I tried the following:
blog = blogs(:first_blog)
assert_difference Comment, :count, blog.comments.size do
assert blog.destroy
end
Then I get the error:
TypeError: can't convert Class into String
So I changed Comment to 'Comment':
assert_difference 'Comment', :count, blog.comments.size do
assert blog.destroy
end
NoMethodError: undefined method `+' for #<Class:0x22cb198>
And that doesn't make any sense to me... ;-) Any help? :-)
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