Monday, March 30, 2009

STAssertEquals doesn't work for NSString (or any object for that matter)

STAssertEquals looks like a useful convenience function when you first stumble upon it, but it's not. SenTestCase_Macros.h reveals its dirty secret in the comments:

Generates a failure when a1 is not equal to a2. This test is for C scalars, structs and unions.

So it's fine for ints and so on, but not a simple workaround for the cumbersome-looking string equality test [string isEqualTo:@"hi!"]. Unfortunately, it doesn't warn you that you're using inappropriate arguments; that realisation is a couple of minutes investigation away.
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2 comments:

  1. AnonymousThursday, 14 May, 2009

    I was having the same problem -- you need to use STAssertEqualObjects.

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  2. kiran kumarFriday, 22 February, 2013

    For object you need to use STAssertEqualObjects and for the value you need to use STAssertEqual!


    Example
    NSString *string1 = @"abcd"
    STAssertEqual(string1,@"abcd",@"Description");

    ReplyDelete

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