VS: Add test for building MSBuild project in subdir

Add test covering cmGlobalGenerator::GenerateBuildCommand for VS
solutions with MSBuild and building a target defined in a subdirectory
and not part of ALL.

Tests/CMakeLists.txt

@@ -1495,6 +1495,29 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
       unset(_last_test)
       list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/VSExcludeFromDefaultBuild")
     endif()
+
+    if(CMAKE_TEST_GENERATOR MATCHES "Visual Studio ([0-5]|[6-9][0-9])")
+      if(CMAKE_TEST_MAKEPROGRAM MATCHES "[mM][sS][bB][uU][iI][lL][dD]\\.[eE][xX][eE]")
+        set(MSBUILD_EXECUTABLE "${CMAKE_TEST_MAKEPROGRAM}")
+      else()
+        set(_FDIR "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\SxS\\VC7;FrameworkDir32]")
+        set(_FVER "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\SxS\\VC7;FrameworkVer32]")
+        find_program(MSBUILD_EXECUTABLE NAMES msbuild HINTS ${_FDIR}/${_FVER})
+      endif()
+      if(MSBUILD_EXECUTABLE)
+        add_test(NAME VSProjectInSubdir COMMAND ${CMAKE_CTEST_COMMAND}
+          --build-and-test
+          "${CMake_SOURCE_DIR}/Tests/VSProjectInSubdir"
+          "${CMake_BINARY_DIR}/Tests/VSProjectInSubdir"
+          --build-two-config
+          --build-generator ${CMAKE_TEST_GENERATOR}
+          --build-generator-toolset "${CMAKE_TEST_GENERATOR_TOOLSET}"
+          --build-makeprogram "${MSBUILD_EXECUTABLE}"
+          --build-project VSProjectInSubdir
+          --build-target test)
+        list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/VSProjectInSubdir")
+      endif()
+    endif()
   endif()
 
   if (APPLE)

Tests/VSProjectInSubdir/CMakeLists.txt

@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 2.8.10)
+project(VSProjectInSubdir NONE)
+add_subdirectory(subdir)

Tests/VSProjectInSubdir/subdir/CMakeLists.txt

@@ -0,0 +1 @@
+add_custom_target(test COMMAND ${CMAKE_COMMAND} -E echo test VERBATIM)