Merge Fix JSON Config MSCV Test

This merge fixes the json config test for MSCV.

To avoid setting the lib path in msvc, gko makes all test works in the library path (dll location).
I changed the working directory to access testing file in #1607. However, it can not find the dll path now.
follow the `matrices/config.hpp.in` to pass the file path

Related PR: #1610

dev_tools/scripts/format_header.sh

@@ -15,6 +15,8 @@ convert_header () {
             fi
         elif [ "${header_file}" = "matrices/config.hpp" ]; then
             echo "#include \"${header_file}\""
+        elif [ "${header_file}" = "extensions/test/config/file_location.hpp" ]; then
+            echo "#include \"${header_file}\""
 	    elif [[ "${header_file}" =~ ${jacobi_regex} ]]; then
             echo "#include \"${header_file}\""
         else

extensions/test/config/CMakeLists.txt

@@ -1,5 +1,6 @@
 ginkgo_create_test(json_config ADDITIONAL_LIBRARIES nlohmann_json::nlohmann_json)
-# set the working directory to the current binary folder for file test
-file(RELATIVE_PATH REL_BINARY_DIR ${PROJECT_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR})
-set_tests_properties("${REL_BINARY_DIR}/json_config" PROPERTIES WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
-configure_file(test.json test.json COPYONLY)
+
+# prepare the testing file and generate location
+configure_file("${Ginkgo_SOURCE_DIR}/extensions/test/config/file_location.hpp.in"
+    "${Ginkgo_BINARY_DIR}/extensions/test/config/file_location.hpp" @ONLY)
+configure_file(test.json "${Ginkgo_BINARY_DIR}/extensions/test/config/test.json")

extensions/test/config/file_location.hpp.in

@@ -0,0 +1,23 @@
+// SPDX-FileCopyrightText: 2017 - 2024 The Ginkgo authors
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+#ifndef GKO_EXTENSIONS_TEST_CONFIG_FILE_LOCATION_HPP_
+#define GKO_EXTENSIONS_TEST_CONFIG_FILE_LOCATION_HPP_
+
+
+namespace gko {
+namespace ext {
+namespace config {
+
+
+const char* location_test_json =
+    "@Ginkgo_BINARY_DIR@/extensions/test/config/test.json";
+
+
+}  // namespace config
+}  // namespace ext
+}  // namespace gko
+
+
+#endif  // GKO_EXTENSIONS_TEST_CONFIG_FILE_LOCATION_HPP_

extensions/test/config/json_config.cpp

@@ -14,6 +14,7 @@
 
 
 #include "core/test/utils.hpp"
+#include "extensions/test/config/file_location.hpp"
 
 
 TEST(JsonConfig, ThrowIfInvalid)
@@ -77,7 +78,8 @@ TEST(JsonConfig, ReadInput)
 
 TEST(JsonConfig, ReadInputFromFile)
 {
-    auto ptree = gko::ext::config::parse_json_file("test.json");
+    auto ptree =
+        gko::ext::config::parse_json_file(gko::ext::config::location_test_json);
 
     auto& child_array = ptree.get("array").get_array();
     auto& child_map = ptree.get("map").get_map();