@@ -16,10 +16,11 @@
 
 #include "config.h"
 
 #import "OFSet.h"
 #import "OFArray.h"
+#import "OFNumber.h"
 #import "OFAutoreleasePool.h"
 
 #import "OFEnumerationMutationException.h"
 
 #import "TestsAppDelegate.h"
@@ -128,8 +129,16 @@
 		ok = true;
 	}
 
 	TEST(@"Detection of mutation during Fast Enumeration", ok);
 
+	TEST(@"-[valueForKey:]",
+	    [(set1 = [[OFSet setWithObjects: @"a", @"ab", @"abc", @"b", nil]
+	    valueForKey: @"length"]) isEqual: [OFSet setWithObjects:
+	    [OFNumber numberWithSize: 1], [OFNumber numberWithSize: 2],
+	    [OFNumber numberWithSize: 3], nil]] &&
+	    [[set1 valueForKey: @"@count"] isEqual:
+	    [OFNumber numberWithSize: 3]])
+
 	[pool drain];
 }
 @end