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Editorial Team
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Asked: 2026-05-25T13:25:48+00:00

I have a custom type Type that implement IEquatable(Type). Then I new up two

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I have a custom type Type that implement IEquatable(Type).
Then I new up two instances of the type, none of them are Null

Assert.IsTrue(obj1.equals(obj2)) //Success
Assert.AreEqual(obj1, obj2) //False
Assert.AreEqual(Type)(obj1, obj2) //False

The first one hits my equals, the second one hits the ToString()
Any suggestions?

update
some code to illustrate: http://pastebin.com/1uecrfeW

more update
If I have to override the base equals, even if a better (generic) equals is available, then what’s the use of implementing IEquals(T)?

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1 Answer

  1. Editorial Team

    My guess is that it’s actually hitting Equals(object) instead of Equals(T). If you haven’t overridden Equals(object) then it’s probably failing the assertion, which then uses ToString to create a useful failure message.

    If you could show a short but complete program which demonstrates the problem (including which Assert method you’re calling – NUnit? Something else?) that would help.

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