This page verifies that eval can be overridden.

If the test passes, you'll see a series of pass messages below.

PASS: eval("x") should be global-scope eval override and is.
PASS: eval("x") should be with-scope eval override and is.
PASS: eval("x") should be catch-scope eval override and is.
PASS: eval("x") should be local-scope eval override and is.