daemon/test: give a message when testParseDisplayName fails

When one instance of the testParseDisplayName testcase failed, the following
generic message would be shown:

 str == t[1]

This generic message makes it impossible to know which of the test strings
triggered the failure. CPPUNIT_ASSERT_MESSAGE is now used instead of
CCPUNIT_ASSERT to provide a more verbose message.

Refs #49115

Change-Id: I136ab2bc83f1103a95dc6f42ca545d7bf9edf244
Signed-off-by: Pascal Potvin <pascal.potvin@extenway.com>

daemon/test/siptest.cpp

@@ -389,7 +389,9 @@ void SIPTest::testParseDisplayName()
 
     for (const auto &t : test_set) {
         const std::string str(sip_utils::parseDisplayName(t[0]));
-        CPPUNIT_ASSERT(str == t[1]);
+        CPPUNIT_ASSERT_MESSAGE(std::string("\"") + str + "\" should be \"" +
+                               t[1] + "\", input on next line: " + t[0],
+                               str == t[1]);
     }
 }