IVGCVSW-3267 Add more code coverage to the PReLU layer

 * Added more unit tests to cover all code branches
 * Moved the InferOutput tests to separate files
 * Created convenience ARMNN_SIMPLE_TEST_CASE macro
 * Created TestUtils file for common utility functions

Change-Id: Id971d3cf77005397d1f0b2783fab68b1f0bf9dfc
Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 976f8de..8fa2bf9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -471,7 +471,8 @@
         src/armnn/test/GraphUtils.cpp
         src/armnn/test/GraphUtils.hpp
         src/armnn/test/InstrumentTests.cpp
-        src/armnn/test/LayerValidateOutputTest.cpp
+        src/armnn/test/InferOutputTests.cpp
+        src/armnn/test/InferOutputTests.hpp
         src/armnn/test/ModelAccuracyCheckerTest.cpp
         src/armnn/test/NetworkTests.cpp
         src/armnn/test/ObservableTest.cpp
@@ -493,6 +494,8 @@
         src/armnn/test/TestNameOnlyLayerVisitor.hpp
         src/armnn/test/TestNameAndDescriptorLayerVisitor.hpp
         src/armnn/test/TestNameAndDescriptorLayerVisitor.cpp
+        src/armnn/test/TestUtils.cpp
+        src/armnn/test/TestUtils.hpp
         src/armnn/test/UnitTests.cpp
         src/armnn/test/UnitTests.hpp
         src/armnn/test/UtilsTests.cpp