@@ -91,10 +91,22 @@
 	}
 
 	TEST(@"Detection of mutation during Fast Enumeration", ok)
 
 	[dict removeObjectForKey: @""];
+
+	TEST(@"-[replaceObjectsUsingBlock:]",
+	    R([dict replaceObjectsUsingBlock:
+	    ^ id (id key, id obj, BOOL *stop) {
+		if ([key isEqual: keys[0]])
+			return @"value_1";
+		if ([key isEqual: keys[1]])
+			return @"value_2";
+
+		return nil;
+	    }]) && [[dict objectForKey: keys[0]] isEqual: @"value_1"] &&
+	    [[dict objectForKey: keys[1]] isEqual: @"value_2"])
 #endif
 
 #ifdef OF_HAVE_BLOCKS
 	{
 		__block size_t i = 0;