w3c/testharness.js — pull request #3 by Velmont (2012-06-20 16:16:59+00:00)
Title: Display variable types in assert_equals if different

Before:

assert_equals: expected 1 but got "1"

After:

assert_equals: expected (number) 1 but got (string) "1"

This is a stupid example, but other times it might be nice to know the types when they are different.