test/taggedNSPointers.m

   1 // TEST_CFLAGS -framework Foundation
   2
   3 #include "test.h"
   4 #include <objc/runtime.h>
   5 #import <Foundation/Foundation.h>
   6
   7 #if OBJC_HAVE_TAGGED_POINTERS
   8
   9 void testTaggedNumber()
  10 {
  11     NSNumber *taggedNS = [NSNumber numberWithInt: 1234];
  12     CFNumberRef taggedCF = (__bridge CFNumberRef)taggedNS;
  13     int result;
  14
  15     testassert( CFGetTypeID(taggedCF) == CFNumberGetTypeID() );
  16     testassert(_objc_getClassForTag(OBJC_TAG_NSNumber) == [taggedNS class]);
  17
  18     CFNumberGetValue(taggedCF, kCFNumberIntType, &result);
  19     testassert(result == 1234);
  20
  21     testassert(_objc_isTaggedPointer(taggedCF));
  22     testassert(_objc_getTaggedPointerTag(taggedCF) == OBJC_TAG_NSNumber);
  23     testassert(_objc_makeTaggedPointer(_objc_getTaggedPointerTag(taggedCF), _objc_getTaggedPointerValue(taggedCF)) == taggedCF);
  24
  25     // do some generic object-y things to the taggedPointer instance
  26     CFRetain(taggedCF);
  27     CFRelease(taggedCF);
  28
  29     NSMutableDictionary *dict = [NSMutableDictionary dictionary];
  30     [dict setObject: taggedNS forKey: @"fred"];
  31     testassert(taggedNS == [dict objectForKey: @"fred"]);
  32     [dict setObject: @"bob" forKey: taggedNS];
  33     testassert([@"bob" isEqualToString: [dict objectForKey: taggedNS]]);
  34
  35     NSNumber *iM88 = [NSNumber numberWithInt:-88];
  36     NSNumber *i12346 = [NSNumber numberWithInt: 12346];
  37     NSNumber *i12347 = [NSNumber numberWithInt: 12347];
  38
  39     NSArray *anArray = [NSArray arrayWithObjects: iM88, i12346, i12347, nil];
  40     testassert([anArray count] == 3);
  41     testassert([anArray indexOfObject: i12346] == 1);
  42
  43     NSSet *aSet = [NSSet setWithObjects: iM88, i12346, i12347, nil];
  44     testassert([aSet count] == 3);
  45     testassert([aSet containsObject: i12346]);
  46
  47     [taggedNS performSelector: @selector(intValue)];
  48     testassert(![taggedNS isProxy]);
  49     testassert([taggedNS isKindOfClass: [NSNumber class]]);
  50     testassert([taggedNS respondsToSelector: @selector(intValue)]);
  51
  52     (void)[taggedNS description];
  53 }
  54
  55 int main()
  56 {
  57     PUSH_POOL {
  58         testTaggedNumber(); // should be tested by CF... our tests are wrong, wrong, wrong.
  59     } POP_POOL;
  60
  61     succeed(__FILE__);
  62 }
  63
  64 // OBJC_HAVE_TAGGED_POINTERS
  65 #else
  66 // not OBJC_HAVE_TAGGED_POINTERS
  67
  68 // Tagged pointers not supported. Crash if an NSNumber actually
  69 // is a tagged pointer (which means this test is out of date).
  70
  71 int main()
  72 {
  73     PUSH_POOL {
  74         testassert(*(void **)(__bridge void *)[NSNumber numberWithInt:1234]);
  75     } POP_POOL;
  76
  77     succeed(__FILE__);
  78 }
  79
  80 #endif