IVGCVSW-3738 Add end-to-end layer test for DepthToSpace

* Added end-to-end layer test implementation for DepthToSpace
* Added test to reference, CL and NEON backends for all supported
  data types and data layouts
* Extracted common data permutation code into new utility file and
  refactored some existing tests to reduce code duplication
* Fixed EndToEndLayerTestImpl template to work with Float16 data

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Iaf7a0012c520451052b20c37e36dc05fa8314ff6

1 files changed, 36 insertions, 0 deletions

diff --git a/src/backends/backendsCommon/test/DataLayoutUtils.hpp b/src/backends/backendsCommon/test/DataLayoutUtils.hpp
new file mode 100644
index 0000000000..f89325829e
--- /dev/null
+++ b/src/backends/backendsCommon/test/DataLayoutUtils.hpp
@@ -0,0 +1,36 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <Permute.hpp>
+
+#include <armnn/Tensor.hpp>
+#include <armnn/Types.hpp>
+
+template<typename T>
+void PermuteTensorNchwToNhwc(armnn::TensorInfo& tensorInfo, std::vector<T>& tensorData)
+{
+    const armnn::PermutationVector nchwToNhwc = { 0, 3, 1, 2 };
+
+    tensorInfo = armnnUtils::Permuted(tensorInfo, nchwToNhwc);
+
+    std::vector<T> tmp(tensorData.size());
+    armnnUtils::Permute(tensorInfo.GetShape(), nchwToNhwc, tensorData.data(), tmp.data(), sizeof(T));
+    tensorData = tmp;
+}
+
+template<typename T>
+void PermuteTensorNhwcToNchw(armnn::TensorInfo& tensorInfo, std::vector<T>& tensorData)
+{
+    const armnn::PermutationVector nhwcToNchw = { 0, 2, 3, 1 };
+
+    tensorInfo = armnnUtils::Permuted(tensorInfo, nhwcToNchw);
+
+    std::vector<T> tmp(tensorData.size());
+    armnnUtils::Permute(tensorInfo.GetShape(), nhwcToNchw, tensorData.data(), tmp.data(), sizeof(T));
+
+    tensorData = tmp;
+}