ad1e7b5bdb
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151 lines
5.3 KiB
C++
151 lines
5.3 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#include <vtkm/cont/internal/ArrayPortalFromIterators.h>
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#include <vtkm/VecTraits.h>
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#include <vtkm/cont/testing/Testing.h>
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namespace
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{
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template <typename T>
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struct TemplatedTests
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{
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static constexpr vtkm::Id ARRAY_SIZE = 10;
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using ValueType = T;
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using ComponentType = typename vtkm::VecTraits<ValueType>::ComponentType;
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ValueType ExpectedValue(vtkm::Id index, ComponentType value)
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{
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return ValueType(static_cast<ComponentType>(index + static_cast<vtkm::Id>(value)));
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}
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template <class IteratorType>
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void FillIterator(IteratorType begin, IteratorType end, ComponentType value)
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{
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vtkm::Id index = 0;
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for (IteratorType iter = begin; iter != end; iter++)
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{
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*iter = ExpectedValue(index, value);
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index++;
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}
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}
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template <class IteratorType>
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bool CheckIterator(IteratorType begin, IteratorType end, ComponentType value)
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{
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vtkm::Id index = 0;
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for (IteratorType iter = begin; iter != end; iter++)
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{
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if (*iter != ExpectedValue(index, value))
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{
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return false;
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}
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index++;
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}
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return true;
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}
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template <class PortalType>
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bool CheckPortal(const PortalType& portal, ComponentType value)
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{
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vtkm::cont::ArrayPortalToIterators<PortalType> iterators(portal);
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return CheckIterator(iterators.GetBegin(), iterators.GetEnd(), value);
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}
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void operator()()
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{
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ValueType array[ARRAY_SIZE];
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constexpr ComponentType ORIGINAL_VALUE = 109;
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FillIterator(array, array + ARRAY_SIZE, ORIGINAL_VALUE);
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::vtkm::cont::internal::ArrayPortalFromIterators<ValueType*> portal(array, array + ARRAY_SIZE);
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::vtkm::cont::internal::ArrayPortalFromIterators<const ValueType*> const_portal(
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array, array + ARRAY_SIZE);
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using PortalType = decltype(portal);
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using PortalConstType = decltype(const_portal);
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std::cout << "Check that PortalSupports* results are valid:" << std::endl;
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VTKM_TEST_ASSERT(vtkm::internal::PortalSupportsSets<PortalType>::value,
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"Writable portals should support Set operations");
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VTKM_TEST_ASSERT(vtkm::internal::PortalSupportsGets<PortalType>::value,
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"Writable portals should support Get operations");
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VTKM_TEST_ASSERT(!vtkm::internal::PortalSupportsSets<PortalConstType>::value,
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"Read-only portals should not allow Set operations");
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VTKM_TEST_ASSERT(vtkm::internal::PortalSupportsGets<PortalConstType>::value,
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"Read-only portals should support Get operations");
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std::cout << " Check that ArrayPortalToIterators is not doing indirection." << std::endl;
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// If you get a compile error here about mismatched types, it might be
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// that ArrayPortalToIterators is not properly overloaded to return the
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// original iterator.
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VTKM_TEST_ASSERT(vtkm::cont::ArrayPortalToIteratorBegin(portal) == array,
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"Begin iterator wrong.");
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VTKM_TEST_ASSERT(vtkm::cont::ArrayPortalToIteratorEnd(portal) == array + ARRAY_SIZE,
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"End iterator wrong.");
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VTKM_TEST_ASSERT(vtkm::cont::ArrayPortalToIteratorBegin(const_portal) == array,
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"Begin const iterator wrong.");
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VTKM_TEST_ASSERT(vtkm::cont::ArrayPortalToIteratorEnd(const_portal) == array + ARRAY_SIZE,
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"End const iterator wrong.");
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VTKM_TEST_ASSERT(portal.GetNumberOfValues() == ARRAY_SIZE, "Portal array size wrong.");
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VTKM_TEST_ASSERT(const_portal.GetNumberOfValues() == ARRAY_SIZE,
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"Const portal array size wrong.");
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std::cout << " Check initial value." << std::endl;
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VTKM_TEST_ASSERT(CheckPortal(portal, ORIGINAL_VALUE), "Portal iterator has bad value.");
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VTKM_TEST_ASSERT(CheckPortal(const_portal, ORIGINAL_VALUE),
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"Const portal iterator has bad value.");
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constexpr ComponentType SET_VALUE = 62;
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std::cout << " Check get/set methods." << std::endl;
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for (vtkm::Id index = 0; index < ARRAY_SIZE; index++)
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{
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VTKM_TEST_ASSERT(portal.Get(index) == ExpectedValue(index, ORIGINAL_VALUE),
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"Bad portal value.");
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VTKM_TEST_ASSERT(const_portal.Get(index) == ExpectedValue(index, ORIGINAL_VALUE),
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"Bad const portal value.");
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portal.Set(index, ExpectedValue(index, SET_VALUE));
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}
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std::cout << " Make sure set has correct value." << std::endl;
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VTKM_TEST_ASSERT(CheckPortal(portal, SET_VALUE), "Portal iterator has bad value.");
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VTKM_TEST_ASSERT(CheckIterator(array, array + ARRAY_SIZE, SET_VALUE), "Array has bad value.");
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}
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};
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struct TestFunctor
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{
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template <typename T>
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void operator()(T) const
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{
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TemplatedTests<T> tests;
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tests();
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}
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};
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void TestArrayPortalFromIterators()
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{
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vtkm::testing::Testing::TryTypes(TestFunctor());
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}
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} // Anonymous namespace
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int UnitTestArrayPortalFromIterators(int argc, char* argv[])
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{
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return vtkm::cont::testing::Testing::Run(TestArrayPortalFromIterators, argc, argv);
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}
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