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 __OBJC2__ && __LP64__
   8
   9 void testTaggedNumber()
  10 {
  11     NSNumber *taggedNS = [NSNumber numberWithInt: 1234];
  12     CFNumberRef taggedCF = (CFNumberRef)objc_unretainedPointer(taggedNS);
  13     uintptr_t taggedAddress = (uintptr_t)taggedCF;
  14     int result;
  15
  16     testassert( CFGetTypeID(taggedCF) == CFNumberGetTypeID() );
  17
  18     CFNumberGetValue(taggedCF, kCFNumberIntType, &result);
  19     testassert(result == 1234);
  20
  21     testassert(taggedAddress & 0x1); // make sure it is really tagged
  22
  23     // do some generic object-y things to the taggedPointer instance
  24     CFRetain(taggedCF);
  25     CFRelease(taggedCF);
  26
  27     NSMutableDictionary *dict = [NSMutableDictionary dictionary];
  28     [dict setObject: taggedNS forKey: @"fred"];
  29     testassert(taggedNS == [dict objectForKey: @"fred"]);
  30     [dict setObject: @"bob" forKey: taggedNS];
  31     testassert([@"bob" isEqualToString: [dict objectForKey: taggedNS]]);
  32
  33     NSNumber *i12345 = [NSNumber numberWithInt: 12345];
  34     NSNumber *i12346 = [NSNumber numberWithInt: 12346];
  35     NSNumber *i12347 = [NSNumber numberWithInt: 12347];
  36
  37     NSArray *anArray = [NSArray arrayWithObjects: i12345, i12346, i12347, nil];
  38     testassert([anArray count] == 3);
  39     testassert([anArray indexOfObject: i12346] == 1);
  40
  41     NSSet *aSet = [NSSet setWithObjects: i12345, i12346, i12347, nil];
  42     testassert([aSet count] == 3);
  43     testassert([aSet containsObject: i12346]);
  44
  45     [taggedNS performSelector: @selector(intValue)];
  46     testassert(![taggedNS isProxy]);
  47     testassert([taggedNS isKindOfClass: [NSNumber class]]);
  48     testassert([taggedNS respondsToSelector: @selector(intValue)]);
  49
  50     [taggedNS description];
  51 }
  52
  53 int main()
  54 {
  55     PUSH_POOL {
  56         testTaggedNumber(); // should be tested by CF... our tests are wrong, wrong, wrong.
  57     } POP_POOL;
  58
  59     succeed(__FILE__);
  60 }
  61
  62 // OBJC2 && __LP64__
  63 #else
  64 // not (OBJC2 && __LP64__)
  65
  66     // Tagged pointers not supported. Crash if an NSNumber actually
  67     // is a tagged pointer (which means this test is out of date).
  68
  69 int main()
  70 {
  71     PUSH_POOL {
  72         testassert(*(void **)objc_unretainedPointer([NSNumber numberWithInt:1234]));
  73     } POP_POOL;
  74
  75     succeed(__FILE__);
  76 }
  77
  78 #endif