+/**
+ * Register a warning string to be expected and the output suppressed.
+ * If the warning is encountered, it will be removed from the list of
+ * expected warnings again.
+ */
+vector<string> expected_warnings;
+void expect_warning (const string &msg)
+{
+ expected_warnings.push_back (msg);
+}
+
+void check_expected_warnings ()
+{
+ if (expected_warnings.size () > 0)
+ {
+ /* Some expected warning was not triggered, so print out a warning. */
+ string msg = _f ("%d expected warning(s) not encountered: ",
+ expected_warnings.size ());
+ for (vsize i = 0; i < expected_warnings.size (); i++)
+ msg += "\n " + expected_warnings[i];
+
+ warning (msg);
+ }
+ expected_warnings.clear ();
+}
+
+bool is_expected (const string &s)
+{
+ bool expected = false;
+ for (vsize i = 0; i < expected_warnings.size (); i++)
+ {
+ // Compare the msg with the suppressed string; If the beginning matches,
+ // i.e. the msg can have additional content AFTER the full (exact)
+ // suppressed message, suppress the warning.
+ // This is needed for the Input class, where the message contains
+ // the input file contents after the real message.
+ if (s.compare (0, expected_warnings[i].size (), expected_warnings[i]) == 0)
+ {
+ expected = true;
+ expected_warnings.erase (expected_warnings.begin () + i);
+ break;
+ }
+ }
+ return expected;
+}
+
+/**
+ * Helper functions: print_message_part (no newline prepended)
+ * print_message (always starts on a new line)
+ */
+
+/* Is output message at NEWLINE? */
+static bool message_newline = true;
+
+/* Display user information as a full message.
+ if newline is true, start the message on a new line.
+*/