Tests: add cases for providing Qt5Core_VERSION manually

Tests/RunCMake/Autogen/QtInFunction.cmake

+enable_language(CXX)
+
+function (use_autogen target)
+  find_package(Qt5 REQUIRED COMPONENTS Core Widgets)
+  set(Qt5Core_VERSION_MAJOR "${Qt5Core_VERSION_MAJOR}" PARENT_SCOPE)
+  set(Qt5Core_VERSION_MINOR "${Qt5Core_VERSION_MINOR}" PARENT_SCOPE)
+  set_property(TARGET "${target}" PROPERTY AUTOMOC 1)
+  set_property(TARGET "${target}" PROPERTY AUTORCC 1)
+  set_property(TARGET "${target}" PROPERTY AUTOUIC 1)
+endfunction ()
+
+add_executable(main empty.cpp)
+use_autogen(main)

Tests/RunCMake/Autogen/QtInFunctionNested-stderr.txt

+^CMake Warning \(dev\) in CMakeLists.txt:
+  AUTOGEN: No valid Qt version found for target main.  AUTOMOC, AUTOUIC,
+  AUTORCC disabled.  Consider adding:
+
+    find_package\(Qt5 COMPONENTS Widgets\)
+
+  to your CMakeLists.txt file.
+This warning is for project developers.  Use -Wno-dev to suppress it.

Tests/RunCMake/Autogen/QtInFunctionNested.cmake

+enable_language(CXX)
+
+function (use_autogen target)
+  find_package(Qt5 REQUIRED COMPONENTS Core Widgets)
+  set(Qt5Core_VERSION_MAJOR "${Qt5Core_VERSION_MAJOR}" PARENT_SCOPE)
+  set(Qt5Core_VERSION_MINOR "${Qt5Core_VERSION_MINOR}" PARENT_SCOPE)
+  set_property(TARGET "${target}" PROPERTY AUTOMOC 1)
+  set_property(TARGET "${target}" PROPERTY AUTORCC 1)
+  set_property(TARGET "${target}" PROPERTY AUTOUIC 1)
+endfunction ()
+
+function (wrap_autogen target)
+  use_autogen("${target}")
+endfunction ()
+
+add_executable(main empty.cpp)
+wrap_autogen(main)

Tests/RunCMake/Autogen/QtInFunctionProperty.cmake

+enable_language(CXX)
+
+function (use_autogen target)
+  find_package(Qt5 REQUIRED COMPONENTS Core Widgets)
+  set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+    PROPERTY
+      Qt5Core_VERSION_MAJOR "${Qt5Core_VERSION_MAJOR}")
+  set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+    PROPERTY
+      Qt5Core_VERSION_MINOR "${Qt5Core_VERSION_MINOR}")
+  set_property(TARGET "${target}" PROPERTY AUTOMOC 1)
+  set_property(TARGET "${target}" PROPERTY AUTORCC 1)
+  set_property(TARGET "${target}" PROPERTY AUTOUIC 1)
+endfunction ()
+
+function (wrap_autogen target)
+  use_autogen("${target}")
+endfunction ()
+
+add_executable(main empty.cpp)
+wrap_autogen(main)

Tests/RunCMake/Autogen/RunCMakeTest.cmake

 include(RunCMake)
 
 run_cmake(NoQt)
+if (with_qt5)
+  run_cmake(QtInFunction)
+  run_cmake(QtInFunctionNested)
+  run_cmake(QtInFunctionProperty)
+endif ()

Tests/RunCMake/CMakeLists.txt

@@ -142,7 +142,14 @@ if(NOT CMake_TEST_EXTERNAL_CMAKE)
 endif()
 
 add_RunCMake_test(AndroidTestUtilities)
-add_RunCMake_test(Autogen)
+set(autogen_with_qt5 FALSE)
+if(CMake_TEST_Qt5)
+  find_package(Qt5Widgets QUIET NO_MODULE)
+endif()
+if(CMake_TEST_Qt5 AND Qt5Widgets_FOUND)
+  set(autogen_with_qt5 TRUE)
+endif ()
+add_RunCMake_test(Autogen -Dwith_qt5=${autogen_with_qt5})
 add_RunCMake_test(BuildDepends)
 if(UNIX AND "${CMAKE_GENERATOR}" MATCHES "Unix Makefiles|Ninja")
   add_RunCMake_test(Byproducts)