COMPMID-576: Port Phase to new validation

Change-Id: Ice08031c997cf8162a4358deb059db857ede2382
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/93585
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

8 files changed, 510 insertions, 8 deletions

diff --git a/arm_compute/runtime/NEON/functions/NEPhase.h b/arm_compute/runtime/NEON/functions/NEPhase.h
index 985ba84c4c..cd62cf98e8 100644
--- a/arm_compute/runtime/NEON/functions/NEPhase.h
+++ b/arm_compute/runtime/NEON/functions/NEPhase.h
@@ -36,11 +36,12 @@ class NEPhase : public INESimpleFunction
 public:
     /** Initialise the kernel's inputs, output.
      *
-     * @param[in]  input1 First tensor input. Data type supported: S16.
-     * @param[in]  input2 Second tensor input. Data type supported: S16.
-     * @param[out] output Output tensor. Data type supported: U8.
+     * @param[in]  input1     First tensor input. Data type supported: S16.
+     * @param[in]  input2     Second tensor input. Data type supported: S16.
+     * @param[out] output     Output tensor. Data type supported: U8.
+     * @param[in]  phase_type (Optional) Phase calculation type. Default: SIGNED.
      */
-    void configure(const ITensor *input1, const ITensor *input2, ITensor *output);
+    void configure(const ITensor *input1, const ITensor *input2, ITensor *output, PhaseType phase_type = PhaseType::SIGNED);
 };
 }
 #endif /*__ARM_COMPUTE_NEPHASE_H__ */
diff --git a/src/runtime/NEON/functions/NEPhase.cpp b/src/runtime/NEON/functions/NEPhase.cpp
index 436d22f3af..63922811d9 100644
--- a/src/runtime/NEON/functions/NEPhase.cpp
+++ b/src/runtime/NEON/functions/NEPhase.cpp
@@ -30,9 +30,18 @@
 
 using namespace arm_compute;
 
-void NEPhase::configure(const ITensor *input1, const ITensor *input2, ITensor *output)
+void NEPhase::configure(const ITensor *input1, const ITensor *input2, ITensor *output, PhaseType phase_type)
 {
-    auto k = arm_compute::support::cpp14::make_unique<NEMagnitudePhaseKernel<MagnitudeType::L2NORM, PhaseType::SIGNED>>();
-    k->configure(input1, input2, nullptr, output);
-    _kernel = std::move(k);
+    if(phase_type == PhaseType::UNSIGNED)
+    {
+        auto k = arm_compute::support::cpp14::make_unique<NEMagnitudePhaseKernel<MagnitudeType::L2NORM, PhaseType::UNSIGNED>>();
+        k->configure(input1, input2, nullptr, output);
+        _kernel = std::move(k);
+    }
+    else
+    {
+        auto k = arm_compute::support::cpp14::make_unique<NEMagnitudePhaseKernel<MagnitudeType::L2NORM, PhaseType::SIGNED>>();
+        k->configure(input1, input2, nullptr, output);
+        _kernel = std::move(k);
+    }
 }
diff --git a/tests/validation/CL/Phase.cpp b/tests/validation/CL/Phase.cpp
new file mode 100644
index 0000000000..3cb6f68e1a
--- /dev/null
+++ b/tests/validation/CL/Phase.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/runtime/CL/functions/CLPhase.h"
+#include "tests/CL/CLAccessor.h"
+#include "tests/PaddingCalculator.h"
+#include "tests/datasets/ShapeDatasets.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Macros.h"
+#include "tests/framework/datasets/Datasets.h"
+#include "tests/validation/Validation.h"
+#include "tests/validation/fixtures/PhaseFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace
+{
+constexpr AbsoluteTolerance<uint8_t> tolerance_value(1);
+} // namespace
+
+TEST_SUITE(CL)
+TEST_SUITE(Phase)
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(concat(datasets::SmallShapes(), datasets::LargeShapes()), framework::dataset::make("DataType", { DataType::S16, DataType::S32 })),
+               shape, data_type)
+{
+    // Create tensors
+    CLTensor src1 = create_tensor<CLTensor>(shape, data_type);
+    CLTensor src2 = create_tensor<CLTensor>(shape, data_type);
+    CLTensor dst  = create_tensor<CLTensor>(shape, DataType::U8);
+
+    ARM_COMPUTE_EXPECT(src1.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(src2.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create and configure function
+    CLPhase phase;
+    phase.configure(&src1, &src2, &dst);
+
+    // Validate valid region
+    const ValidRegion valid_region = shape_to_valid_region(shape);
+    validate(dst.info()->valid_region(), valid_region);
+
+    // Validate padding
+    const PaddingSize padding = PaddingCalculator(shape.x(), 16).required_padding();
+    validate(src1.info()->padding(), padding);
+    validate(src2.info()->padding(), padding);
+    validate(dst.info()->padding(), padding);
+}
+
+template <typename T>
+using CLPhaseFixture = PhaseValidationFixture<CLTensor, CLAccessor, CLPhase, T>;
+
+TEST_SUITE(S16)
+FIXTURE_DATA_TEST_CASE(RunSmall, CLPhaseFixture<int16_t>, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), framework::dataset::make("Format", Format::S16)),
+                                                                                                     framework::dataset::make("PhaseType", { PhaseType::SIGNED, PhaseType::UNSIGNED })))
+{
+    // Validate output
+    validate_wrap(CLAccessor(_target), _reference, tolerance_value, 0);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, CLPhaseFixture<int16_t>, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), framework::dataset::make("Format", Format::S16)),
+                                                                                                   framework::dataset::make("PhaseType", { PhaseType::SIGNED, PhaseType::UNSIGNED })))
+{
+    // Validate output
+    validate_wrap(CLAccessor(_target), _reference, tolerance_value, 0);
+}
+TEST_SUITE_END() // S16
+
+TEST_SUITE(S32)
+FIXTURE_DATA_TEST_CASE(RunSmall, CLPhaseFixture<int32_t>, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), framework::dataset::make("Format", Format::S32)),
+                                                                                                     framework::dataset::make("PhaseType", { PhaseType::SIGNED, PhaseType::UNSIGNED })))
+{
+    // Validate output
+    validate_wrap(CLAccessor(_target), _reference, tolerance_value, 0);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, CLPhaseFixture<int32_t>, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), framework::dataset::make("Format", Format::S32)),
+                                                                                                   framework::dataset::make("PhaseType", { PhaseType::SIGNED, PhaseType::UNSIGNED })))
+{
+    // Validate output
+    validate_wrap(CLAccessor(_target), _reference, tolerance_value, 0);
+}
+TEST_SUITE_END() // S32
+
+TEST_SUITE_END()
+TEST_SUITE_END()
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/CPP/Phase.cpp b/tests/validation/CPP/Phase.cpp
new file mode 100644
index 0000000000..4311ef091e
--- /dev/null
+++ b/tests/validation/CPP/Phase.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "Phase.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<uint8_t> phase(const SimpleTensor<T> &gx, const SimpleTensor<T> &gy, PhaseType phase_type)
+{
+    const float pi           = std::atan(1) * 4;
+    const float rad_to_deg   = 180.0f / pi;
+    const float scale_factor = 128.f / 180.f;
+    const float epsilon      = 1e-9f; // used to avoid division by zero
+
+    const float ninety      = scale_factor * 90.f;
+    const float one_eighty  = scale_factor * 180.f;
+    const float two_seventy = scale_factor * 270.f;
+
+    // unsigned: map to [0-255)
+    // signed:   map to [0-180) degrees
+    const float scale = (phase_type == PhaseType::UNSIGNED) ? rad_to_deg : rad_to_deg * scale_factor;
+
+    SimpleTensor<uint8_t> phase(gx.shape(), DataType::U8);
+
+    for(int i = 0; i < gx.num_elements(); ++i)
+    {
+        bool quad_two   = std::signbit(gx[i]) && !std::signbit(gy[i]);
+        bool quad_three = std::signbit(gx[i]) && std::signbit(gy[i]);
+        bool quad_four  = !std::signbit(gx[i]) && std::signbit(gy[i]);
+
+        float  x      = gy[i] / (gx[i] + epsilon);
+        double arctan = std::atan(x);
+
+        const bool is_negative = std::signbit(arctan);
+
+        // Radians to degrees conversion with applied scale factor
+        arctan = arctan * scale;
+
+        if(phase_type == PhaseType::UNSIGNED)
+        {
+            arctan = is_negative ? arctan + 180.f : arctan;
+        }
+        else
+        {
+            arctan = is_negative ? arctan + ninety : arctan;
+
+            // Choose correct quandrant
+            arctan = quad_two ? ninety + arctan : arctan;
+            arctan = quad_three ? one_eighty + arctan : arctan;
+            arctan = quad_four ? two_seventy + arctan : arctan;
+        }
+
+        phase[i] = saturate_cast<uint8_t>(arctan + 0.5f);
+    }
+
+    return phase;
+}
+
+template SimpleTensor<uint8_t> phase(const SimpleTensor<int16_t> &gx, const SimpleTensor<int16_t> &gy, PhaseType phase_type);
+template SimpleTensor<uint8_t> phase(const SimpleTensor<int32_t> &gx, const SimpleTensor<int32_t> &gy, PhaseType phase_type);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/CPP/Phase.h b/tests/validation/CPP/Phase.h
new file mode 100644
index 0000000000..d322d53e02
--- /dev/null
+++ b/tests/validation/CPP/Phase.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_TEST_PHASE_H__
+#define __ARM_COMPUTE_TEST_PHASE_H__
+
+#include "tests/SimpleTensor.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<uint8_t> phase(const SimpleTensor<T> &gx, const SimpleTensor<T> &gy, PhaseType phase_type);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_TEST_PHASE_H__ */
diff --git a/tests/validation/NEON/Phase.cpp b/tests/validation/NEON/Phase.cpp
new file mode 100644
index 0000000000..8e2ef23ccc
--- /dev/null
+++ b/tests/validation/NEON/Phase.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/runtime/NEON/functions/NEPhase.h"
+#include "tests/NEON/Accessor.h"
+#include "tests/PaddingCalculator.h"
+#include "tests/datasets/ShapeDatasets.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Macros.h"
+#include "tests/framework/datasets/Datasets.h"
+#include "tests/validation/Validation.h"
+#include "tests/validation/fixtures/PhaseFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace
+{
+constexpr AbsoluteTolerance<uint8_t> tolerance_value(1);
+} // namespace
+
+TEST_SUITE(NEON)
+TEST_SUITE(Phase)
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(concat(datasets::SmallShapes(), datasets::LargeShapes()), framework::dataset::make("DataType", DataType::S16)), shape, data_type)
+{
+    // Create tensors
+    Tensor src1 = create_tensor<Tensor>(shape, data_type);
+    Tensor src2 = create_tensor<Tensor>(shape, data_type);
+    Tensor dst  = create_tensor<Tensor>(shape, DataType::U8);
+
+    ARM_COMPUTE_EXPECT(src1.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(src2.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create and configure function
+    NEPhase phase;
+    phase.configure(&src1, &src2, &dst);
+
+    // Validate valid region
+    const ValidRegion valid_region = shape_to_valid_region(shape);
+    validate(dst.info()->valid_region(), valid_region);
+
+    // Validate padding
+    const PaddingSize padding = PaddingCalculator(shape.x(), 16).required_padding();
+    validate(src1.info()->padding(), padding);
+    validate(src2.info()->padding(), padding);
+    validate(dst.info()->padding(), padding);
+}
+
+template <typename T>
+using NEPhaseFixture = PhaseValidationFixture<Tensor, Accessor, NEPhase, T>;
+
+TEST_SUITE(S16)
+FIXTURE_DATA_TEST_CASE(RunSmall, NEPhaseFixture<int16_t>, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), framework::dataset::make("Format", Format::S16)),
+                                                                                                     framework::dataset::make("PhaseType", { PhaseType::UNSIGNED, PhaseType::SIGNED })))
+{
+    // Validate output
+    validate_wrap(Accessor(_target), _reference, tolerance_value, 0);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, NEPhaseFixture<int16_t>, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), framework::dataset::make("Format", Format::S16)),
+                                                                                                   framework::dataset::make("PhaseType", { PhaseType::UNSIGNED, PhaseType::SIGNED })))
+{
+    // Validate output
+    validate_wrap(Accessor(_target), _reference, tolerance_value, 0);
+}
+TEST_SUITE_END() // S16
+
+TEST_SUITE_END()
+TEST_SUITE_END()
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/fixtures/PhaseFixture.h b/tests/validation/fixtures/PhaseFixture.h
new file mode 100644
index 0000000000..693a61ed1a
--- /dev/null
+++ b/tests/validation/fixtures/PhaseFixture.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef ARM_COMPUTE_TEST_PHASE_FIXTURE
+#define ARM_COMPUTE_TEST_PHASE_FIXTURE
+
+#include "arm_compute/core/TensorShape.h"
+#include "arm_compute/core/Types.h"
+#include "tests/Globals.h"
+#include "tests/IAccessor.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Fixture.h"
+#include "tests/validation/CPP/Phase.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T>
+class PhaseValidationFixture : public framework::Fixture
+{
+public:
+    template <typename...>
+    void setup(TensorShape shape, Format format, PhaseType phase_type)
+    {
+        _target    = compute_target(shape, format, phase_type);
+        _reference = compute_reference(shape, format, phase_type);
+    }
+
+protected:
+    template <typename U>
+    void fill(U &&tensor, std::random_device::result_type seed_offset)
+    {
+        library->fill_tensor_uniform(tensor, seed_offset);
+    }
+
+    TensorType compute_target(const TensorShape &shape, Format format, PhaseType phase_type)
+    {
+        DataType data_type = data_type_from_format(format);
+
+        // Create tensors
+        TensorType src1 = create_tensor<TensorType>(shape, data_type);
+        src1.info()->set_format(format);
+
+        TensorType src2 = create_tensor<TensorType>(shape, data_type);
+        src2.info()->set_format(format);
+
+        TensorType dst = create_tensor<TensorType>(shape, DataType::U8);
+        dst.info()->set_format(Format::U8);
+
+        // Create and configure function
+        FunctionType phase;
+
+        phase.configure(&src1, &src2, &dst, phase_type);
+
+        ARM_COMPUTE_EXPECT(src1.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(src2.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Allocate tensors
+        src1.allocator()->allocate();
+        src2.allocator()->allocate();
+        dst.allocator()->allocate();
+
+        ARM_COMPUTE_EXPECT(!src1.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(!src2.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(!dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Fill tensors
+        fill(AccessorType(src1), 0);
+        fill(AccessorType(src2), 1);
+
+        // Compute function
+        phase.run();
+
+        return dst;
+    }
+
+    SimpleTensor<uint8_t> compute_reference(const TensorShape &shape, Format format, PhaseType phase_type)
+    {
+        DataType data_type = data_type_from_format(format);
+
+        // Create reference
+        SimpleTensor<T> src1{ shape, data_type };
+        SimpleTensor<T> src2{ shape, data_type };
+
+        // Fill reference
+        fill(src1, 0);
+        fill(src2, 1);
+
+        return reference::phase<T>(src1, src2, phase_type);
+    }
+
+    TensorType            _target{};
+    SimpleTensor<uint8_t> _reference{};
+};
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_PHASE_FIXTURE */
diff --git a/utils/TypePrinter.h b/utils/TypePrinter.h
index de7eaf8b3d..ec373742ea 100644
--- a/utils/TypePrinter.h
+++ b/utils/TypePrinter.h
@@ -714,5 +714,30 @@ inline ::std::ostream &operator<<(::std::ostream &os, const KeyPoint &point)
 
     return os;
 }
+
+/** Formatted output of the PhaseType type. */
+inline ::std::ostream &operator<<(::std::ostream &os, const PhaseType &phase_type)
+{
+    switch(phase_type)
+    {
+        case PhaseType::SIGNED:
+            os << "SIGNED";
+            break;
+        case PhaseType::UNSIGNED:
+            os << "UNSIGNED";
+            break;
+        default:
+            ARM_COMPUTE_ERROR("NOT_SUPPORTED!");
+    }
+
+    return os;
+}
+
+inline std::string to_string(const arm_compute::PhaseType &type)
+{
+    std::stringstream str;
+    str << type;
+    return str.str();
+}
 } // namespace arm_compute
 #endif /* __ARM_COMPUTE_TEST_TYPE_PRINTER_H__ */