1 files changed, 140 insertions, 0 deletions
diff --git a/src/backends/backendsCommon/test/WorkloadUtilsTest.cpp b/src/backends/backendsCommon/test/WorkloadUtilsTest.cpp
new file mode 100644
index 0000000000..e429902ce4
--- /dev/null
+++ b/src/backends/backendsCommon/test/WorkloadUtilsTest.cpp
@@ -0,0 +1,140 @@
+//
+// Copyright © 2023 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include <backendsCommon/WorkloadUtils.hpp>
+#include <armnnTestUtils/MockMemoryManager.hpp>
+#include <armnnTestUtils/MockTensorHandle.hpp>
+#include <doctest/doctest.h>
+
+TEST_SUITE("WorkloadUtilsTest")
+{
+using namespace armnn;
+
+TEST_CASE("CopyTensorContents")
+{
+    // Two tensors of 1 float. Set source to a value and destination to 0.
+    // Copy source to destination and make sure destination is copied.
+    std::shared_ptr<MockMemoryManager> memoryManager = std::make_shared<MockMemoryManager>();
+    TensorInfo info({ 1, 1, 1, 1 }, DataType::Float32);
+    MockTensorHandle srcTensorHandle(info, memoryManager);
+    MockTensorHandle destTensorHandle(info, memoryManager);
+    srcTensorHandle.Allocate();
+    float* buffer = reinterpret_cast<float*>(srcTensorHandle.Map());
+    buffer[0] = 2.5f;
+
+    destTensorHandle.Allocate();
+    buffer = reinterpret_cast<float*>(destTensorHandle.Map());
+    buffer[0] = 0.0f;
+
+    auto copyFunc = [](void* dst, const void* src, size_t size)
+    {
+        memcpy(dst, src, size);
+    };
+    CopyTensorContentsGeneric(&srcTensorHandle, &destTensorHandle, copyFunc);
+    // After copy the destination should be 2.5.
+    buffer = reinterpret_cast<float*>(destTensorHandle.Map());
+    CHECK(buffer[0] == 2.5f);
+    // Also make sure the first buffer hasn't changed.
+    buffer = reinterpret_cast<float*>(srcTensorHandle.Map());
+    CHECK(buffer[0] == 2.5f);
+}
+
+TEST_CASE("CopyTensorContents_UnallocatedTensors")
+{
+    // Standard copy lambda
+    auto copyFunc = [](void* dst, const void* src, size_t size)
+    {
+        memcpy(dst, src, size);
+    };
+
+    // Two tensors of 1 float. The source will be managed but unallocated. This should throw an exception.
+    std::shared_ptr<MockMemoryManager> memoryManager = std::make_shared<MockMemoryManager>();
+    TensorInfo info({ 1, 1, 1, 1 }, DataType::Float32);
+    MockTensorHandle unallocatedSource(info, memoryManager);
+    unallocatedSource.Manage();
+    MockTensorHandle destTensorHandle(info, memoryManager);
+    destTensorHandle.Allocate();
+    CHECK_THROWS_AS(CopyTensorContentsGeneric(&unallocatedSource, &destTensorHandle, copyFunc),
+                    const armnn::MemoryValidationException&);
+
+    // Same test for destination tensor.
+    MockTensorHandle unallocatedDest(info, memoryManager);
+    unallocatedDest.Manage();
+    MockTensorHandle srcTensorHandle(info, memoryManager);
+    srcTensorHandle.Allocate();
+    CHECK_THROWS_AS(CopyTensorContentsGeneric(&srcTensorHandle, &unallocatedDest, copyFunc),
+                    const armnn::MemoryValidationException&);
+
+}
+
+TEST_CASE("CopyTensorContents_DifferentTensorSizes")
+{
+    std::shared_ptr<MockMemoryManager> memoryManager = std::make_shared<MockMemoryManager>();
+    // Standard copy lambda
+    auto copyFunc = [](void* dst, const void* src, size_t size)
+    {
+        memcpy(dst, src, size);
+    };
+
+    // This is an odd test case. We'll make the destination tensor 1 element smaller than the source.
+    // In this case the tensor will be truncated.
+    TensorInfo largerInfo({ 1, 1, 1, 6 }, DataType::Float32);
+    TensorInfo smallerInfo({ 1, 1, 1, 5 }, DataType::Float32);
+    MockTensorHandle srcLargerTensorHandle(largerInfo, memoryManager);
+    srcLargerTensorHandle.Allocate();
+    float* buffer = reinterpret_cast<float*>(srcLargerTensorHandle.Map());
+    // We'll set a value in the 5th elements, this should be copied over.
+    buffer[4] = 5.1f;
+    MockTensorHandle destSmallerTensorHandle(smallerInfo, memoryManager);
+    destSmallerTensorHandle.Allocate();
+    buffer = reinterpret_cast<float*>(destSmallerTensorHandle.Map());
+    buffer[4] = 5.2f; // This should be overwritten.
+    CopyTensorContentsGeneric(&srcLargerTensorHandle, &destSmallerTensorHandle, copyFunc);
+    CHECK(buffer[4] == 5.1f);
+
+    // Same test case but with destination being larger than source.
+    MockTensorHandle srcSmallerTensorHandle(smallerInfo, memoryManager);
+    srcSmallerTensorHandle.Allocate();
+    buffer = reinterpret_cast<float*>(srcSmallerTensorHandle.Map());
+    // We'll set a value in the 5th elements, this should be copied over.
+    buffer[4] = 5.1f;
+    MockTensorHandle destLargerTensorHandle(largerInfo, memoryManager);
+    destLargerTensorHandle.Allocate();
+    buffer = reinterpret_cast<float*>(destLargerTensorHandle.Map());
+    buffer[4] = 5.2f; // This should be overwritten.
+    buffer[5] = 6.2f; // This should NOT be overwritten.
+    CopyTensorContentsGeneric(&srcSmallerTensorHandle, &destLargerTensorHandle, copyFunc);
+    CHECK(buffer[4] == 5.1f); // Has been copied.
+    CHECK(buffer[5] == 6.2f); // Should be untouched.
+}
+
+TEST_CASE("CopyTensorContents_MixedDataTypes")
+{
+    // This is almost a pointless test, but it may detect problems with future changes.
+    // We'll copy a float tensor into a uint8 tensor of the same size. It should
+    // work without error.
+    std::shared_ptr<MockMemoryManager> memoryManager = std::make_shared<MockMemoryManager>();
+    // Standard copy lambda
+    auto copyFunc = [](void* dst, const void* src, size_t size)
+    {
+        memcpy(dst, src, size);
+    };
+
+    TensorInfo floatInfo({ 1, 1, 1, 2 }, DataType::Float32);
+    TensorInfo intInfo({ 1, 1, 1, 8 }, DataType::QAsymmU8);
+    MockTensorHandle floatTensorHandle(floatInfo, memoryManager);
+    floatTensorHandle.Allocate();
+    float* floatBuffer = reinterpret_cast<float*>(floatTensorHandle.Map());
+    floatBuffer[0] = 1.1f; // This should be 0x3f8ccccd or something very close.
+    MockTensorHandle uintTensorHandle(intInfo, memoryManager);
+    uintTensorHandle.Allocate();
+    uint8_t* intBuffer = reinterpret_cast<uint8_t*>(uintTensorHandle.Map());
+    intBuffer[0] = 0;
+
+    CopyTensorContentsGeneric(&floatTensorHandle, &uintTensorHandle, copyFunc);
+    CHECK(intBuffer[0] == 0xcd); // Make sure the data has been copied over.
+}
+
+}