diff --git a/c99/CMakeLists.txt b/c99/CMakeLists.txt
new file mode 100644
index 00000000..cafa2ef7
--- /dev/null
+++ b/c99/CMakeLists.txt
@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 2.8.4)
+project(GildedRose_c99)
+
+enable_testing()
+
+include(ExternalProject)
+ExternalProject_Add(unity
+  GIT_REPOSITORY    https://github.com/ThrowTheSwitch/Unity.git
+  GIT_TAG           master
+  SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/unity-src"
+  BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/unity-build"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND     ""
+  INSTALL_COMMAND   ""
+  TEST_COMMAND      ""
+)
+add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/unity-src/src/unity.c
+                   DEPENDS unity
+                   COMMAND "")
+
+
+add_executable( GildedRose_Unity
+   GildedRose.c
+   ${CMAKE_CURRENT_BINARY_DIR}/unity-src/src/unity.c
+   test_unity_gildedrose.c
+)
+target_include_directories(GildedRose_Unity PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/unity-src/src/)
+set_property(TARGET GildedRose_Unity PROPERTY C_STANDARD 99)
+add_dependencies(GildedRose_Unity unity)
+
+add_test(NAME GildedRose_Unity COMMAND GildedRose_Unity)
diff --git a/c99/run-once-cmake.sh b/c99/run-once-cmake.sh
new file mode 100755
index 00000000..74e2c0e0
--- /dev/null
+++ b/c99/run-once-cmake.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+if [[ ! -d build ]]; then
+    mkdir -p build
+fi
+
+cd build
+cmake .. -DCMAKE_BUILD_TYPE=DEBUG && cmake --build . && ctest --output-on-failure
diff --git a/c99/test_unity_gildedrose.c b/c99/test_unity_gildedrose.c
new file mode 100644
index 00000000..5e0d8b98
--- /dev/null
+++ b/c99/test_unity_gildedrose.c
@@ -0,0 +1,18 @@
+#include "unity.h"
+#include "GildedRose.h"
+
+void test_NameOfItem(void)
+{
+    Item items[1];
+    init_item(items, "Foo", 0, 0);
+    update_quality(items, 1);
+    TEST_ASSERT_EQUAL_STRING( "fixme", items[0].name );
+}
+
+int main(void)
+{
+    UNITY_BEGIN();
+    RUN_TEST(test_NameOfItem);
+    return UNITY_END();
+}
+