@@ -16,10 +16,11 @@
 #include "config.h"
 
 #import "TestsAppDelegate.h"
 
 static OFString *const module = @"Runtime";
+static void *testKey = &testKey;
 
 @interface OFObject (SuperTest)
 - (id)superTest;
 @end
 
@@ -86,10 +87,25 @@
 
 	test.bar = string;
 	TEST(@"retain, atomic properties",
 	    test.bar == string && string.retainCount == 3)
 
+	TEST(@"Associated objects",
+	    R(objc_setAssociatedObject(self, testKey, test,
+	    OBJC_ASSOCIATION_ASSIGN)) && test.retainCount == 2 &&
+	    R(objc_setAssociatedObject(self, testKey, test,
+	    OBJC_ASSOCIATION_RETAIN)) && test.retainCount == 3 &&
+	    objc_getAssociatedObject(self, testKey) == test &&
+	    test.retainCount == 4 &&
+	    R(objc_setAssociatedObject(self, testKey, test,
+	    OBJC_ASSOCIATION_ASSIGN)) && test.retainCount == 3 &&
+	    R(objc_setAssociatedObject(self, testKey, test,
+	    OBJC_ASSOCIATION_RETAIN_NONATOMIC)) && test.retainCount == 4 &&
+	    objc_getAssociatedObject(self, testKey) == test &&
+	    test.retainCount == 4 &&
+	    R(objc_removeAssociatedObjects(self)) && test.retainCount == 3)
+
 #ifdef OF_OBJFW_RUNTIME
 	if (sizeof(uintptr_t) == 8)
 		value = 0xDEADBEEFDEADBEF;
 	else if (sizeof(uintptr_t) == 4)
 		value = 0xDEADBEF;