marcro to indicate current test function on STDOUT

since our test.sh runner can be used to verify the
expected output printed by tests, working with these
output transcripts of larger tests can be hard at times.

These separators help to find who produced which output
and they prevent a regexp match to grep beyond the feed
of a single function (which can be a common problem
when using the self-diagnostic output of the facility
currently in test, which obviously will be similar
on any data printed.

src/lib/test/test-helper.hpp

@@ -175,4 +175,12 @@ namespace test{
               CHECK (lumiera_error_expect (LUMIERA_ERROR_##ERROR_ID));\
             }
 
+
+/**
+ * Macro to mark the current test function in STDOUT.
+ * This can be helpful to digest a long test output dump
+ */
+#define MARK_TEST_FUN \
+          cout << "|" << endl << "|  »"<<__FUNCTION__<<"«" <<endl;
+
 #endif /*LIB_TEST_TEST_HELPER_H*/

tests/gui/abstract-tangible-test.cpp

@@ -303,6 +303,7 @@ namespace test {
       void
       invokeCommand ()
         {
+          MARK_TEST_FUN
           EventLog nexusLog = gui::test::Nexus::startNewLog();
           
           // Setup test stage: define an command/action "in Proc"
@@ -339,7 +340,6 @@ namespace test {
           Command::get (DUMMY_CMD_ID).undo();
           CHECK (dummyState == prevState);
           
-          
           cout << "____Nexus-Log_________________\n"
                << util::join(nexusLog, "\n")
                << "\n───╼━━━━━━━━━╾────────────────"<<endl;