CMake: Add GTA Run Settings

[thbeu]

This PR generates the Run Settings file for the GoogleTestAdapter (GTA) with the expected working directory to run the GoogleTest based unit tests from Test Explorer in Visual Studio.

Resolves #143

[rouault]

I'm a bit skeptical about such a IDE specific setting. Isn't rather the issue the WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}" at line 31 of tests/CMakeLists.txt that should be instead ${CMAKE_SOURCE_DIR}/tests ?

[thbeu]

Isn't rather the issue the WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}" at line 31 of tests/CMakeLists.txt that should be instead ${CMAKE_SOURCE_DIR}/tests ?

According to all my many tries and the cited issue #143 there is no such CMake only fix to get the GTA running with proper working directory.

[rouault]

hum, but I'm puzzled by the discrepency between the existing ${PROJECT_SOURCE_DIR} in tests/CMakeLists.txt and @CMAKE_SOURCE_DIR@/tests in the new file of this PR. Any explanation why they don't match?

[thbeu]

hum, but I'm puzzled by the discrepency between the existing ${PROJECT_SOURCE_DIR} in tests/CMakeLists.txt and @CMAKE_SOURCE_DIR@/tests in the new file of this PR. Any explanation why they don't match?

PROJECT_SOURCE_DIR of /tests/ subdir is the same as CMAKE_SOURCE_DIR/tests.

OK, fixed it. Now it relies on configure_file being called from /tests/CMakeLists.txt project.

Alternatively a UNITTEST_DIR variable could be introduced.

[rouault]

PROJECT_SOURCE_DIR of /tests/ subdir is the same as CMAKE_SOURCE_DIR/tests.

oh, I missed that tests/CMakeLists.txt defined a new project()...

The new file should also be listed in EXTRA_DIST of top Makefile.am

[thbeu]

The new file should also be listed in EXTRA_DIST of top Makefile.am

I already did.