install test data on Windows platform too

CMakeLists.txt

@@ -294,6 +294,16 @@ if(NOT OPENCV_TEST_INSTALL_PATH)
   set(OPENCV_TEST_INSTALL_PATH "${OPENCV_BIN_INSTALL_PATH}")
 endif()
 
+if(OPENCV_TEST_DATA_PATH AND NOT OPENCV_TEST_DATA_INSTALL_PATH)
+  if(ANDROID)
+    set(OPENCV_TEST_DATA_INSTALL_PATH "sdk/etc/testdata")
+  elseif(WIN32)
+    set(OPENCV_TEST_DATA_INSTALL_PATH "testdata")
+  else()
+    set(OPENCV_TEST_DATA_INSTALL_PATH "share/OpenCV/testdata")
+  endif()
+endif()
+
 if(ANDROID)
   set(LIBRARY_OUTPUT_PATH         "${OpenCV_BINARY_DIR}/lib/${ANDROID_NDK_ABI_NAME}")
   set(3P_LIBRARY_OUTPUT_PATH      "${OpenCV_BINARY_DIR}/3rdparty/lib/${ANDROID_NDK_ABI_NAME}")

data/CMakeLists.txt

@@ -10,13 +10,5 @@ elseif(NOT WIN32)
 endif()
 
 if(INSTALL_TESTS AND OPENCV_TEST_DATA_PATH)
-  if(ANDROID)
-    install(DIRECTORY ${OPENCV_TEST_DATA_PATH} DESTINATION sdk/etc/testdata COMPONENT tests)
-  elseif(NOT WIN32)
-    # CPack does not set correct permissions by default, so we do it explicitly.
-    install(DIRECTORY ${OPENCV_TEST_DATA_PATH}
-            DIRECTORY_PERMISSIONS OWNER_WRITE OWNER_READ OWNER_EXECUTE
-              GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
-            DESTINATION share/OpenCV/testdata COMPONENT tests)
-  endif()
+  install(DIRECTORY "${OPENCV_TEST_DATA_PATH}/" DESTINATION "${OPENCV_TEST_DATA_INSTALL_PATH}" COMPONENT "tests")
 endif()