Added wchar api tests to windows

appveyor.yml

@@ -26,7 +26,7 @@ build_script:
 
     set PATH=C:\mingw-w64\i686-5.3.0-posix-dwarf-rt_v4-rev0\mingw32\bin;%PATH%
 
-    cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE% -DSPDLOG_BUILD_EXAMPLE=ON -DSPDLOG_BUILD_EXAMPLE_HO=ON -DSPDLOG_BUILD_TESTS=ON -DSPDLOG_BUILD_TESTS_HO=OFF
+    cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE% -DSPDLOG_WCHAR_SUPPORT=ON -DSPDLOG_BUILD_EXAMPLE=ON -DSPDLOG_BUILD_EXAMPLE_HO=ON -DSPDLOG_BUILD_TESTS=ON -DSPDLOG_BUILD_TESTS_HO=OFF
 
     cmake --build . --config %BUILD_TYPE%
 

tests/test_stdout_api.cpp

@@ -77,4 +77,22 @@ TEST_CASE("stderr_color_mt", "[stderr]")
     l->error("Test stderr_color_mt");
     l->critical("Test stderr_color_mt");
     spdlog::drop_all();
-}
+}
\ No newline at end of file
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+
+TEST_CASE("wchar_api", "[stdout]")
+{
+    auto l = spdlog::stdout_logger_st("wchar_logger");
+    l->set_pattern("%+");
+    l->set_level(spdlog::level::trace);
+    l->trace(L"Test wchar_api");
+    l->trace(L"Test wchar_api {}", L"param");
+    l->trace(L"Test wchar_api {}", 1);    
+    l->trace(L"Test wchar_api {}", std::wstring{L"wstring param"});
+    l->trace(std::wstring{L"Test wchar_api wstring"});
+
+    spdlog::drop_all();
+}
+
+#endif
\ No newline at end of file