From 05e85b9e9005fa950e90d31762439fff4429c412 Mon Sep 17 00:00:00 2001
From: John Wellbelove <john.wellbelove@asterconsulting.co.uk>
Date: Thu, 21 Apr 2022 11:57:55 +0200
Subject: [PATCH] Added mutex traits

Added transparent comparator test to multimap
---
 include/etl/mutex.h      | 8 ++++++++
 test/test_etl_traits.cpp | 3 +++
 test/test_multimap.cpp   | 3 +++
 3 files changed, 14 insertions(+)

diff --git a/include/etl/mutex.h b/include/etl/mutex.h
index d775e649..e153a21c 100644
--- a/include/etl/mutex.h
+++ b/include/etl/mutex.h
@@ -53,4 +53,12 @@ SOFTWARE.
   #define ETL_HAS_MUTEX 0
 #endif
 
+namespace etl
+{
+  namespace traits
+  {
+    static ETL_CONSTANT bool has_mutex = (ETL_HAS_MUTEX == 1);
+  }
+}
+
 #endif
diff --git a/test/test_etl_traits.cpp b/test/test_etl_traits.cpp
index 9794b19c..fca12e92 100644
--- a/test/test_etl_traits.cpp
+++ b/test/test_etl_traits.cpp
@@ -33,6 +33,8 @@ SOFTWARE.
 #include "etl/platform.h"
 #include "etl/version.h"
 #include "etl/char_traits.h"
+#include "etl/mutex.h"
+
 namespace
 {
   SUITE(test_etl_traits)
@@ -60,6 +62,7 @@ namespace
       CHECK_EQUAL((ETL_USING_8BIT_TYPES == 1),                 etl::traits::has_8bit_types);
       CHECK_EQUAL((ETL_USING_64BIT_TYPES == 1),                etl::traits::has_64bit_types);
       CHECK_EQUAL((ETL_HAS_ATOMIC == 1),                       etl::traits::has_atomic);
+      CHECK_EQUAL((ETL_HAS_MUTEX == 1),                        etl::traits::has_mutex);
       CHECK_EQUAL((ETL_HAS_NULLPTR == 1),                      etl::traits::has_nullptr);
       CHECK_EQUAL((ETL_HAS_CHAR8_T == 1),                      etl::traits::has_char8_t);
       CHECK_EQUAL((ETL_HAS_NATIVE_CHAR8_T == 1),               etl::traits::has_native_char8_t);
diff --git a/test/test_multimap.cpp b/test/test_multimap.cpp
index 641f4e02..3ec7d4d3 100644
--- a/test/test_multimap.cpp
+++ b/test/test_multimap.cpp
@@ -1462,6 +1462,9 @@ namespace
 
       std::string a("A");
       Key b("B");
+
+      CHECK(compare(a, b));
+      CHECK(!compare(b, a));
     }
 
     //*************************************************************************