diff --git a/tests/format.cpp b/tests/test_misc.cpp
similarity index 99%
rename from tests/format.cpp
rename to tests/test_misc.cpp
index 0b2e1d6d..4f6ee72c 100644
--- a/tests/format.cpp
+++ b/tests/test_misc.cpp
@@ -39,7 +39,6 @@ TEST_CASE("basic_logging ", "[basic_logging]")
     //REQUIRE(log_info(some_logged_class("some_val")) == "some_val");
 }
 
-
 TEST_CASE("log_levels", "[log_levels]")
 {
     REQUIRE(log_info("Hello", spdlog::level::err) == "");
@@ -54,3 +53,6 @@ TEST_CASE("log_levels", "[log_levels]")
 
 
 
+
+
+
diff --git a/tests/test_pattern_formatter.cpp b/tests/test_pattern_formatter.cpp
new file mode 100644
index 00000000..473870e7
--- /dev/null
+++ b/tests/test_pattern_formatter.cpp
@@ -0,0 +1,68 @@
+#include "includes.h"
+
+// log to str and return it
+static std::string log_to_str(const std::string& msg, std::shared_ptr<spdlog::formatter> formatter = nullptr)
+{
+	std::ostringstream oss;
+	auto oss_sink = std::make_shared<spdlog::sinks::ostream_sink_mt>(oss);
+	spdlog::logger oss_logger("pattern_tester", oss_sink);
+	oss_logger.set_level(spdlog::level::info);
+	if (formatter) oss_logger.set_formatter(formatter);
+	oss_logger.info(msg);
+	return oss.str();
+}
+TEST_CASE("custom eol", "[pattern_formatter]")
+{
+	std::string msg = "Hello custom eol test";
+	std::string eol = ";)";
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("%v", spdlog::pattern_time_type::local, ";)");
+
+	REQUIRE(log_to_str(msg, formatter) == msg + eol);
+}
+
+TEST_CASE("empty format", "[pattern_formatter]")
+{
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("", spdlog::pattern_time_type::local, "");
+	REQUIRE(log_to_str("Some message", formatter) == "");
+}
+
+TEST_CASE("empty format2", "[pattern_formatter]")
+{
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("", spdlog::pattern_time_type::local, "\n");
+	REQUIRE(log_to_str("Some message", formatter) == "\n");
+}
+
+TEST_CASE("level", "[pattern_formatter]")
+{
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("[%l] %v", spdlog::pattern_time_type::local, "\n");
+	REQUIRE(log_to_str("Some message", formatter) == "[info] Some message\n");
+}
+
+
+TEST_CASE("short level", "[pattern_formatter]")
+{
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("[%L] %v", spdlog::pattern_time_type::local, "\n");
+	REQUIRE(log_to_str("Some message", formatter) == "[I] Some message\n");
+}
+
+TEST_CASE("name", "[pattern_formatter]")
+{
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("[%n] %v", spdlog::pattern_time_type::local, "\n");
+	REQUIRE(log_to_str("Some message", formatter) == "[pattern_tester] Some message\n");
+}
+
+TEST_CASE("date MM/DD/YY ", "[pattern_formatter]")
+{
+	using namespace::std::chrono;
+	auto formatter = std::make_shared<spdlog::pattern_formatter>("%D %v", spdlog::pattern_time_type::local, "\n");	
+	auto now_tm = spdlog::details::os::localtime();			
+	std::stringstream oss;	
+	oss << std::put_time(&now_tm, "%D") << " Some message\n";		
+	REQUIRE(log_to_str("Some message", formatter) == oss.str());
+}
+
+
+
+
+
+
diff --git a/tests/tests.vcxproj b/tests/tests.vcxproj
index ef9d78f9..286c6979 100644
--- a/tests/tests.vcxproj
+++ b/tests/tests.vcxproj
@@ -21,6 +21,7 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{59A07559-5F38-4DD6-A7FA-DB4153690B42}</ProjectGuid>
     <RootNamespace>tests</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -128,10 +129,11 @@
     <ClCompile Include="errors.cpp" />
     <ClCompile Include="file_helper.cpp" />
     <ClCompile Include="file_log.cpp" />
-    <ClCompile Include="format.cpp" />
+    <ClCompile Include="test_misc.cpp" />
     <ClCompile Include="main.cpp" />
     <ClCompile Include="registry.cpp" />
     <ClCompile Include="test_macros.cpp" />
+    <ClCompile Include="test_pattern_formatter.cpp" />
     <ClCompile Include="utils.cpp" />
   </ItemGroup>
   <ItemGroup>
diff --git a/tests/tests.vcxproj.filters b/tests/tests.vcxproj.filters
index adc86e7b..d1fdf73d 100644
--- a/tests/tests.vcxproj.filters
+++ b/tests/tests.vcxproj.filters
@@ -18,9 +18,6 @@
     <ClCompile Include="file_log.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="format.cpp">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="main.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -39,6 +36,12 @@
     <ClCompile Include="test_macros.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="test_pattern_formatter.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="test_misc.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="includes.h">