test/arr-weak.m

   1 // TEST_CONFIG MEM=mrc
   2 // TEST_CRASHES
   3 /*
   4 TEST_RUN_OUTPUT
   5 objc\[\d+\]: cannot form weak reference to instance \(0x[0-9a-f]+\) of class Crash
   6 CRASHED: SIG(ILL|TRAP)
   7 END
   8 */
   9
  10 #include "test.h"
  11
  12 #include <Foundation/NSObject.h>
  13
  14 static id weak;
  15 static id weak2;
  16 static bool did_dealloc;
  17
  18 @interface Test : NSObject @end
  19 @implementation Test
  20 -(void)dealloc {
  21     testassert(weak == self);
  22     testassert(weak2 == self);
  23
  24     testprintf("Weak references clear during super dealloc\n");
  25     testassert(weak2 != NULL);
  26     [super dealloc];
  27     testassert(weak2 == NULL);
  28
  29     did_dealloc = true;
  30 }
  31 @end
  32
  33 @interface Crash : NSObject @end
  34 @implementation Crash
  35 -(void)dealloc {
  36     testassert(weak == self);
  37     testassert(weak2 == self);
  38
  39     testprintf("Weak store crashes while deallocating\n");
  40     objc_storeWeak(&weak, self);
  41     fail("objc_storeWeak of deallocating value should have crashed");
  42     [super dealloc];
  43 }
  44 @end
  45
  46 int main()
  47 {
  48     Test *obj = [Test new];
  49     Test *obj2 = [Test new];
  50     id result;
  51
  52     testprintf("Weak assignment\n");
  53     result = objc_storeWeak(&weak, obj);
  54     testassert(result == obj);
  55     testassert(weak == obj);
  56
  57     testprintf("Weak assignment to the same value\n");
  58     result = objc_storeWeak(&weak, obj);
  59     testassert(result == obj);
  60     testassert(weak == obj);
  61
  62     testprintf("Weak assignment to different value\n");
  63     result = objc_storeWeak(&weak, obj2);
  64     testassert(result == obj2);
  65     testassert(weak == obj2);
  66
  67     testprintf("Weak assignment to NULL\n");
  68     result = objc_storeWeak(&weak, NULL);
  69     testassert(result == NULL);
  70     testassert(weak == NULL);
  71
  72     testprintf("Weak clear\n");
  73
  74     result = objc_storeWeak(&weak, obj);
  75     testassert(result == obj);
  76     testassert(weak == obj);
  77
  78     result = objc_storeWeak(&weak2, obj);
  79     testassert(result == obj);
  80     testassert(weak2 == obj);
  81
  82     did_dealloc = false;
  83     [obj release];
  84     testassert(did_dealloc);
  85     testassert(weak == NULL);
  86     testassert(weak2 == NULL);
  87
  88     Crash *obj3 = [Crash new];
  89     result = objc_storeWeak(&weak, obj3);
  90     testassert(result == obj3);
  91     testassert(weak == obj3);
  92
  93     result = objc_storeWeak(&weak2, obj3);
  94     testassert(result == obj3);
  95     testassert(weak2 == obj3);
  96
  97     [obj3 release];
  98     fail("should have crashed in -[Crash dealloc]");
  99 }