diff --git a/test/test_mem_type.cpp b/test/test_mem_type.cpp
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+++ b/test/test_mem_type.cpp
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+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Copyright(c) 2021 jwellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#include "unit_test_framework.h"
+
+#include "etl/experimental/mem_type.h"
+#include "etl/largest.h"
+
+#include <array>
+#include <vector>
+#include <algorithm>
+#include <string>
+
+namespace
+{
+  struct Data
+  {
+    char c;
+    short s;
+    std::array<int, 10> a;
+  };
+
+  // Test variant types.
+  using MemType = etl::mem_type<etl::largest<char, double, Data>::size, 
+                                etl::largest<char, double, Data>::alignment>;
+
+  SUITE(test_mem_type)
+  {
+    TEST(test_alignment)
+    {
+      MemType memType;
+
+      CHECK(alignof(char)  <= MemType::Alignment);
+      CHECK(alignof(short) <= MemType::Alignment);
+      CHECK(alignof(Data)  <= MemType::Alignment);
+
+      CHECK(alignof(char)  <= memType.Alignment);
+      CHECK(alignof(short) <= memType.Alignment);
+      CHECK(alignof(Data)  <= memType.Alignment);
+
+      CHECK(alignof(char)  <= memType.alignment());
+      CHECK(alignof(short) <= memType.alignment());
+      CHECK(alignof(Data)  <= memType.alignment());
+    }
+
+    TEST(test_size)
+    {
+      MemType memType;
+
+      CHECK(sizeof(char)  <= MemType::Size);
+      CHECK(sizeof(short) <= MemType::Size);
+      CHECK(sizeof(Data)  <= MemType::Size);
+
+      CHECK(sizeof(char)  <= memType.Size);
+      CHECK(sizeof(short) <= memType.Size);
+      CHECK(sizeof(Data)  <= memType.Size);
+
+      CHECK(sizeof(char)  <= memType.size());
+      CHECK(sizeof(short) <= memType.size());
+      CHECK(sizeof(Data)  <= memType.size());
+    }
+  };
+}