assertEquals(0.0, -0.0, 0.0) and assertEquals(0.0, -0.0) give different answers

[quincy]

If you compare 0.0 and -0.0 with assertEquals you get different answers depending on whether you pass a delta value of 0.0. I would expect them to give the same answer. This patch contains a fix for assertEquals and a change to the unit test to verify correctness.

[marcphilipp]

In my point of view the current implementation is correct.

assertEquals(Object, Object) checks for object equivalence as specified by java.lang.Object.equals(Object). Since new Double(0.0d).equals(new Double(-0.0d)) returns false, assertEquals(new Double(0.0d), new Double(-0.0d)) must fail.

That said, comparing doubles that way should be avoided. For this very reason assertEquals(double, double) is deprecated and will even throw an assertion error.

[kcooney]

I agree with Marc.