Add ability to disable tests

The tests require C++14 although the rest of the code doesn't. Adding the
ability to disable tests lets people with old compilers build the plugin.

Author: Simon Knopp

CMakeLists.txt

@@ -17,10 +17,10 @@ option(STATIC "Build plugin as a static library" OFF)
 if(STATIC)
     set(LIBTYPE STATIC)
     add_definitions(-DQT_STATICPLUGIN)
-    add_subdirectory(test-static)
+    set(TEST_DIR test-static)
 else()
     set(LIBTYPE MODULE)
-    add_subdirectory(test-shared)
+    set(TEST_DIR test-shared)
 endif()
 
 add_library(qsqlcipher ${LIBTYPE}
@@ -38,3 +38,7 @@ target_link_libraries(qsqlcipher
     ${SQLCIPHER_LIBRARIES}
 )
 
+include(CTest)
+if(BUILD_TESTING)
+    add_subdirectory(${TEST_DIR})
+endif()

README.md

@@ -47,6 +47,14 @@ Note that setting ``-DSTATIC=ON`` only builds *this plugin* as a static library.
 If you also want to link to static versions of Qt and/or SQLCipher, it's up to
 you to make sure CMake finds static versions of those libraries.
 
+
+## Tests
+
+Some basic tests are included - run ``make test``. Note that while pretty much
+any C++ compiler can build the actual plugin, the tests require support for
+C++14. If you have an old compiler you can pass ``-DBUILD_TESTING=OFF`` to CMake
+to skip building the tests.
+
 -----
 
 ## Old version

test-shared/CMakeLists.txt

@@ -3,3 +3,5 @@ set(CMAKE_CXX_FLAGS "-std=c++14")
 
 add_executable(qsqlcipher-test main.cpp)
 target_link_libraries(qsqlcipher-test Qt5::Sql)
+
+add_test(NAME qsqlcipher-test COMMAND qsqlcipher-test)