1 files changed, 103 insertions, 0 deletions
diff --git a/src/backends/backendsCommon/test/BackendRegistryTests.cpp b/src/backends/backendsCommon/test/BackendRegistryTests.cpp
new file mode 100644
index 0000000000..4afe273de4
--- /dev/null
+++ b/src/backends/backendsCommon/test/BackendRegistryTests.cpp
@@ -0,0 +1,103 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include <armnn/Types.hpp>
+
+#include <backendsCommon/BackendRegistry.hpp>
+
+#include <boost/test/unit_test.hpp>
+
+namespace
+{
+
+class SwapRegistryStorage : public armnn::BackendRegistry
+{
+public:
+    SwapRegistryStorage() : armnn::BackendRegistry()
+    {
+        Swap(armnn::BackendRegistryInstance(),  m_TempStorage);
+    }
+
+    ~SwapRegistryStorage()
+    {
+        Swap(armnn::BackendRegistryInstance(),m_TempStorage);
+    }
+
+private:
+    FactoryStorage m_TempStorage;
+};
+
+}
+
+BOOST_AUTO_TEST_SUITE(BackendRegistryTests)
+
+BOOST_AUTO_TEST_CASE(SwapRegistry)
+{
+    using namespace armnn;
+    auto nFactories = BackendRegistryInstance().Size();
+    {
+        SwapRegistryStorage helper;
+        BOOST_TEST(BackendRegistryInstance().Size() == 0);
+    }
+    BOOST_TEST(BackendRegistryInstance().Size() == nFactories);
+}
+
+BOOST_AUTO_TEST_CASE(TestRegistryHelper)
+{
+    using namespace armnn;
+    SwapRegistryStorage helper;
+
+    bool called = false;
+
+    StaticRegistryInitializer<BackendRegistry> factoryHelper(
+        BackendRegistryInstance(),
+        "HelloWorld",
+        [&called](const EmptyInitializer&)
+        {
+            called = true;
+            return armnn::IBackendInternalUniquePtr(nullptr);
+        }
+    );
+
+    // sanity check: the factory has not been called yet
+    BOOST_TEST(called == false);
+
+    auto factoryFunction = BackendRegistryInstance().GetFactory("HelloWorld");
+
+    // sanity check: the factory still not called
+    BOOST_TEST(called == false);
+
+    factoryFunction(EmptyInitializer());
+    BOOST_TEST(called == true);
+}
+
+BOOST_AUTO_TEST_CASE(TestDirectCallToRegistry)
+{
+    using namespace armnn;
+    SwapRegistryStorage helper;
+
+    bool called = false;
+    BackendRegistryInstance().Register(
+        "HelloWorld",
+        [&called](const EmptyInitializer&)
+        {
+            called = true;
+            return armnn::IBackendInternalUniquePtr(nullptr);
+        }
+    );
+
+    // sanity check: the factory has not been called yet
+    BOOST_TEST(called == false);
+
+    auto factoryFunction = BackendRegistryInstance().GetFactory("HelloWorld");
+
+    // sanity check: the factory still not called
+    BOOST_TEST(called == false);
+
+    factoryFunction(EmptyInitializer());
+    BOOST_TEST(called == true);
+}
+
+BOOST_AUTO_TEST_SUITE_END()