protocol_copyPropertyList.m [plain text]
// TEST_CFLAGS -framework Foundation
// need Foundation to get NSObject compatibility additions for class Protocol
// because ARC calls [protocol retain]
#include "test.h"
#include <string.h>
#include <malloc/malloc.h>
#include <objc/runtime.h>
@protocol SuperProps
@property int prop1;
@property int prop2;
@end
@protocol SubProps <SuperProps>
@property int prop3;
@property int prop4;
@end
@protocol FourProps
@property int prop1;
@property int prop2;
@property int prop3;
@property int prop4;
@end
@protocol NoProps @end
static int isNamed(objc_property_t p, const char *name)
{
return (0 == strcmp(name, property_getName(p)));
}
int main()
{
objc_property_t *props;
unsigned int count;
Protocol *proto;
proto = @protocol(SubProps);
testassert(proto);
count = 100;
props = protocol_copyPropertyList(proto, &count);
testassert(props);
testassert(count == 2);
testassert((isNamed(props[0], "prop4") && isNamed(props[1], "prop3")) ||
(isNamed(props[0], "prop3") && isNamed(props[1], "prop4")));
// props[] should be null-terminated
testassert(props[2] == NULL);
free(props);
proto = @protocol(SuperProps);
testassert(proto);
count = 100;
props = protocol_copyPropertyList(proto, &count);
testassert(props);
testassert(count == 2);
testassert((isNamed(props[0], "prop1") && isNamed(props[1], "prop2")) ||
(isNamed(props[0], "prop2") && isNamed(props[1], "prop1")));
// props[] should be null-terminated
testassert(props[2] == NULL);
free(props);
// Check null-termination - this property list block would be 16 bytes
// if it weren't for the terminator
proto = @protocol(FourProps);
testassert(proto);
count = 100;
props = protocol_copyPropertyList(proto, &count);
testassert(props);
testassert(count == 4);
testassert(malloc_size(props) >= 5 * sizeof(objc_property_t));
testassert(props[3] != NULL);
testassert(props[4] == NULL);
free(props);
// Check NULL count parameter
props = protocol_copyPropertyList(proto, NULL);
testassert(props);
testassert(props[4] == NULL);
testassert(props[3] != NULL);
free(props);
// Check NULL protocol parameter
count = 100;
props = protocol_copyPropertyList(NULL, &count);
testassert(!props);
testassert(count == 0);
// Check NULL protocol and count
props = protocol_copyPropertyList(NULL, NULL);
testassert(!props);
// Check protocol with no properties
proto = @protocol(NoProps);
testassert(proto);
count = 100;
props = protocol_copyPropertyList(proto, &count);
testassert(!props);
testassert(count == 0);
succeed(__FILE__);
return 0;
}