Money library error


Hello everyone !

The following test fails:

def test_substract_from_zero
assert_equal -12.to_money, Money.empty - (12.to_money)

This is equivalent to the normal arithmetic expression: 0 - 12 == -12.

The error is caused by the first line of Money#-(other_money)

def -(other_money)
return other_money.dup if


“return other_money.dup if” should be removed to pass the
test case.

This is also on my blog.

Hope that helps someone !