Better CPPUNIT_ASSERT_EQUAL output for sal_Int8 etc.

Change-Id: I236e8db4cf63fc284b1491591001357a0c662471

include/unotest/assertion_traits.hxx

+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_UNOTEST_ASSERTION_TRAITS_HXX
+#define INCLUDED_UNOTEST_ASSERTION_TRAITS_HXX
+
+// sal/types.h declares typedefs to signed char (sal_Int8) and unsigned char
+// (sal_uInt8, sal_Bool), so better specialize CppUnit::assertion_traits for
+// those two types to treat the toString() value as an integer rather than a
+// character:
+
+#include <sal/config.h>
+
+#include <string>
+
+namespace CppUnit {
+
+template<> struct assertion_traits<signed char> {
+    static bool equal(signed char x, signed char y) { return x == y; }
+
+    static std::string toString(signed char x)
+    { return std::to_string(static_cast<int>(x)); }
+};
+
+template<> struct assertion_traits<unsigned char> {
+    static bool equal(unsigned char x, unsigned char y) { return x == y; }
+
+    static std::string toString(unsigned char x)
+    { return std::to_string(static_cast<unsigned int>(x)); }
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/qa/extras/ooxmlimport/ooxmlimport.cxx

@@ -60,6 +60,7 @@
 #include <com/sun/star/style/ParagraphAdjust.hpp>
 #include <com/sun/star/util/DateTime.hpp>
 #include <vcl/svapp.hxx>
+#include <unotest/assertion_traits.hxx>
 #include <unotools/fltrcfg.hxx>
 #include <comphelper/sequenceashashmap.hxx>
 #include <com/sun/star/text/GraphicCrop.hpp>