@@ -221,10 +221,14 @@
 	TEST(@"-[hash:]", IRI1.hash == IRI4.hash && IRI2.hash != IRI3.hash)
 
 	EXPECT_EXCEPTION(@"Detection of invalid format",
 	    OFInvalidFormatException, [OFIRI IRIWithString: @"http"])
 
+	TEST(@"-[IRIByAddingPercentEncodingForUnicodeCharacters]",
+	    [IRI11.IRIByAddingPercentEncodingForUnicodeCharacters
+	    isEqual: [OFIRI IRIWithString: @"http://%C3%A4/%C3%B6?%C3%BC"]])
+
 	mutableIRI = [OFMutableIRI IRIWithScheme: @"dummy"];
 
 	EXPECT_EXCEPTION(
 	    @"-[setPercentEncodedScheme:] with invalid characters fails",
 	    OFInvalidFormatException, mutableIRI.scheme = @"%20")