X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=check%2Fexam_color.cpp;h=a3e972add6f1633a383e16f51b39516447eecf46;hp=cbc99462ef676765d8a2501da44830972871a2ab;hb=7d2b35dd0918dad7e3f1d17da0a591ef496aeba8;hpb=68fdf425abf14d016d5f95ee7b9d06a19a3c5926

diff --git a/check/exam_color.cpp b/check/exam_color.cpp
index cbc99462..a3e972ad 100644
--- a/check/exam_color.cpp
+++ b/check/exam_color.cpp
@@ -3,7 +3,7 @@
  *  Here we test GiNaC's color objects (su(3) Lie algebra). */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -113,7 +113,7 @@ static unsigned color_check3()
 
 	unsigned result = 0;
 
-	idx a(symbol("a"), 8), b(symbol("b"), 8), c(symbol("c"), 8), k(symbol("k"), 8);
+	idx a(symbol("a"), 8), b(symbol("b"), 8), c(symbol("c"), 8);
 	ex e;
 
 	e = color_ONE();
@@ -125,6 +125,18 @@ static unsigned color_check3()
 	e = color_T(a) * color_T(b) * color_T(c);
 	result += check_equal(color_trace(e), color_h(a, b, c) / 4);
 
+	e = color_ONE(0) * color_ONE(1) / 9;
+	result += check_equal(color_trace(e, 0), color_ONE(1) / 3);
+	result += check_equal(color_trace(e, 1), color_ONE(0) / 3);
+	result += check_equal(color_trace(e, 2), e);
+	result += check_equal(color_trace(e, lst(0, 1)), 1);
+
+	e = color_T(a, 0) * color_T(a, 1) * color_T(b, 0) * color_T(b, 1);
+	result += check_equal_simplify(color_trace(e, 0), 2 * color_ONE(1) / 3);
+	result += check_equal_simplify(color_trace(e, 1), 2 * color_ONE(0) / 3);
+	result += check_equal_simplify(color_trace(e, 2), e);
+	result += check_equal_simplify(color_trace(e, lst(0, 1)), 2);
+
 	return result;
 }