IVGCVSW-2553 Add Unit Test for ConstTensor layer visitors

Change-Id: I20a67135e4af7aa1f28f5000d73122f4e5e3acd5
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9eb184f..8d43ef8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -407,6 +407,8 @@
 if(BUILD_UNIT_TESTS)
     set(unittest_sources)
     list(APPEND unittest_sources
+        src/armnn/test/ConstTensorLayerVisitor.hpp
+        src/armnn/test/ConstTensorLayerVisitor.cpp
         src/armnn/test/CreateWorkload.hpp
         src/armnn/test/CsvReaderTest.cpp
         src/armnn/test/EndToEndTest.cpp