Tests: Simplify GeneratorExpression imported include directory check

Do not duplicate the list of include directories 4 times.

Tests/GeneratorExpression/CMakeLists.txt

@@ -187,10 +187,7 @@ add_custom_target(check-part3 ALL
     -Dtest_version_equal_1=$<VERSION_EQUAL:1.0.1,1.1>
     -Dtest_version_equal_2=$<VERSION_EQUAL:1.1,1.1>
     -Dconfig=$<CONFIGURATION>
-    -Dtest_imported_debug=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
-    -Dtest_imported_release=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
-    -Dtest_imported_relwithdebinfo=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
-    -Dtest_imported_minsizerel=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
+    -Dtest_imported_includes=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
     -Dtest_imported_fallback=$<STREQUAL:$<TARGET_FILE_NAME:importedFallback>,fallback_loc>
     -Dtest_alias_file_exe=$<STREQUAL:$<TARGET_FILE:Alias::SomeExe>,$<TARGET_FILE:someexe>>
     -Dtest_alias_file_lib=$<STREQUAL:$<TARGET_FILE:Alias::SomeLib>,$<TARGET_FILE:empty1>>

Tests/GeneratorExpression/check-part3.cmake

@@ -8,18 +8,15 @@ check(test_version_less_2 "1")
 check(test_version_equal_1 "0")
 check(test_version_equal_2 "1")
 
-foreach(c debug release relwithdebinfo minsizerel)
-  if(config AND NOT config STREQUAL NoConfig)
-    if(NOT "${test_imported_${c}}" MATCHES "^;/imported2/include$"
-        AND NOT "${test_imported_${c}}" MATCHES "^/imported1/include;$")
-      message(SEND_ERROR "test_imported_${c} is not correct: ${test_imported_${c}}")
-    endif()
-  else()
-    if(NOT "${test_imported_${c}}" MATCHES "^;$")
-      message(SEND_ERROR "test_imported_${c} is not an empty list: ${test_imported_${c}}")
-    endif()
+if(config AND NOT config STREQUAL NoConfig)
+  if(NOT "${test_imported_includes}" MATCHES "^;*/imported[12]/include;*$")
+    message(SEND_ERROR "test_imported_includes is not correct: ${test_imported_includes}")
   endif()
-endforeach()
+else()
+  if(NOT "${test_imported_includes}" MATCHES "^;$")
+    message(SEND_ERROR "test_imported_includes is not an empty list: ${test_imported_includes}")
+  endif()
+endif()
 
 check(test_imported_fallback "1")