test/protocol_copyPropertyList.m

   1 #include "test.h"
   2 #include <string.h>
   3 #include <malloc/malloc.h>
   4 #include <objc/objc-runtime.h>
   5
   6 @protocol SuperProps
   7 @property int prop1;
   8 @property int prop2;
   9 @end
  10
  11 @protocol SubProps <SuperProps>
  12 @property int prop3;
  13 @property int prop4;
  14 @end
  15
  16
  17 @protocol FourProps
  18 @property int prop1;
  19 @property int prop2;
  20 @property int prop3;
  21 @property int prop4;
  22 @end
  23
  24 @protocol NoProps @end
  25
  26 static int isNamed(objc_property_t p, const char *name)
  27 {
  28     return (0 == strcmp(name, property_getName(p)));
  29 }
  30
  31 int main()
  32 {
  33     objc_property_t *props;
  34     unsigned int count;
  35     Protocol *proto;
  36
  37     proto = @protocol(SubProps);
  38     testassert(proto);
  39
  40     count = 100;
  41     props = protocol_copyPropertyList(proto, &count);
  42     testassert(props);
  43     testassert(count == 2);
  44     testassert(isNamed(props[0], "prop4"));
  45     testassert(isNamed(props[1], "prop3"));
  46     // props[] should be null-terminated
  47     testassert(props[2] == NULL);
  48     free(props);
  49
  50     proto = @protocol(SuperProps);
  51     testassert(proto);
  52
  53     count = 100;
  54     props = protocol_copyPropertyList(proto, &count);
  55     testassert(props);
  56     testassert(count == 2);
  57     testassert(isNamed(props[0], "prop2"));
  58     testassert(isNamed(props[1], "prop1"));
  59     // props[] should be null-terminated
  60     testassert(props[2] == NULL);
  61     free(props);
  62
  63     // Check null-termination - this property list block would be 16 bytes
  64     // if it weren't for the terminator
  65     proto = @protocol(FourProps);
  66     testassert(proto);
  67
  68     count = 100;
  69     props = protocol_copyPropertyList(proto, &count);
  70     testassert(props);
  71     testassert(count == 4);
  72     testassert(malloc_size(props) >= 5 * sizeof(objc_property_t));
  73     testassert(props[3] != NULL);
  74     testassert(props[4] == NULL);
  75     free(props);
  76
  77     // Check NULL count parameter
  78     props = protocol_copyPropertyList(proto, NULL);
  79     testassert(props);
  80     testassert(props[4] == NULL);
  81     testassert(props[3] != NULL);
  82     free(props);
  83
  84     // Check NULL protocol parameter
  85     count = 100;
  86     props = protocol_copyPropertyList(NULL, &count);
  87     testassert(!props);
  88     testassert(count == 0);
  89
  90     // Check NULL protocol and count
  91     props = protocol_copyPropertyList(NULL, NULL);
  92     testassert(!props);
  93
  94     // Check protocol with no properties
  95     proto = @protocol(NoProps);
  96     testassert(proto);
  97
  98     count = 100;
  99     props = protocol_copyPropertyList(proto, &count);
 100     testassert(!props);
 101     testassert(count == 0);
 102
 103     succeed(__FILE__);
 104     return 0;
 105 }