Add an empty unit test.

test/unit/CMakeLists.txt

@@ -0,0 +1,18 @@
+project(tawashi_unittest CXX)
+
+add_executable(${PROJECT_NAME}
+	check.cpp
+)
+
+target_include_directories(${PROJECT_NAME}
+	PRIVATE ${TAWASHI_SOURCE_ROOT}/lib/Catch/single_include
+)
+target_link_libraries(${PROJECT_NAME}
+	PRIVATE tawashi_implem
+)
+
+add_test(
+	NAME TawashiUnitTest
+	WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+	COMMAND ${PROJECT_NAME}
+)

test/unit/check.cpp

@@ -0,0 +1,19 @@
+/* Copyright 2017, Michele Santullo
+ * This file is part of "tawashi".
+ *
+ * "tawashi" 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * "tawashi" 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 "tawashi".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"