IVGCVSW-3399 Add QSymm16 IsLayerSupportedTest to reference backend

 * Refactor and add QSymm16 to IsDepthwiseConvolutionSupported
 * Refactor and add QSymm16 to IsEqualSupported
 * Refactor and add QSymm16 to IsGreaterSupported
 * Refactor and add QSymm16 to IsSplitterSupported
 * Refactor and add QSymm16 to IsStridedSliceSupported
 * Refactor and add QSymm16 to IsMemCopySupported
 * Refactor IsFakeQuantizationSupported

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I4f115a5535748fc22df8bc90b24b537fd5dd95b8
diff --git a/src/backends/reference/test/RefLayerSupportTests.cpp b/src/backends/reference/test/RefLayerSupportTests.cpp
index e6a2fb3..106a7f6 100644
--- a/src/backends/reference/test/RefLayerSupportTests.cpp
+++ b/src/backends/reference/test/RefLayerSupportTests.cpp
@@ -66,6 +66,12 @@
     IsLayerSupportedTests<armnn::RefWorkloadFactory, armnn::DataType::QuantisedAsymm8>(&factory);
 }
 
+BOOST_AUTO_TEST_CASE(IsLayerSupportedInt16Reference)
+{
+    armnn::RefWorkloadFactory factory;
+    IsLayerSupportedTests<armnn::RefWorkloadFactory, armnn::DataType::QuantisedSymm16>(&factory);
+}
+
 BOOST_AUTO_TEST_CASE(IsConvertFp16ToFp32SupportedReference)
 {
     std::string reasonIfUnsupported;