Tests: fix cppunittests

NULL is not allowed to initialize a string object. A common
helper function is created to solve the problem.

2 files changed, 66 insertions, 0 deletions

diff --git a/test/test.cpp b/test/test.cpp
new file mode 100644
index 0000000..da4bc9e
--- /dev/null
+++ b/test/test.cpp
@@ -0,0 +1,35 @@
+/*
+   Please use git log for copyright holder and year information
+
+   This file is part of libbash.
+
+   libbash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 2 of the License, or
+   (at your option) any later version.
+
+   libbash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with libbash.  If not, see <http://www.gnu.org/licenses/>.
+   */
+///
+/// \file test.cpp
+/// \author Mu Qiao
+/// \brief helper functions for tests
+///
+#include <cstdlib>
+
+#include "test.h"
+
+std::string get_src_dir()
+{
+  std::string srcdir(".");
+  if(getenv("srcdir"))
+    srcdir = getenv("srcdir");
+
+  return srcdir;
+}
diff --git a/test/test.h b/test/test.h
new file mode 100644
index 0000000..18a1a31
--- /dev/null
+++ b/test/test.h
@@ -0,0 +1,31 @@
+/*
+   Please use git log for copyright holder and year information
+
+   This file is part of libbash.
+
+   libbash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 2 of the License, or
+   (at your option) any later version.
+
+   libbash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with libbash.  If not, see <http://www.gnu.org/licenses/>.
+   */
+///
+/// \file test.h
+/// \author Mu Qiao
+/// \brief helper functions for tests
+///
+#ifndef LIBBASH_TEST_H_
+#define LIBBASH_TEST_H_
+
+#include <string>
+
+std::string get_src_dir();
+
+#endif