mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
92 lines
2.5 KiB
C++
92 lines
2.5 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/testing/Testing.h>
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VTKM_DEPRECATED_SUPPRESS_BEGIN
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#include <vtkm/Algorithms.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/Invoker.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vector>
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namespace
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{
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using IdArray = vtkm::cont::ArrayHandle<vtkm::Id>;
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struct TestBinarySearch
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{
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struct Impl : public vtkm::worklet::WorkletMapField
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{
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using ControlSignature = void(FieldIn needles, WholeArrayIn haystack, FieldOut results);
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using ExecutionSignature = _3(_1, _2);
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using InputDomain = _1;
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template <typename HaystackPortal>
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VTKM_EXEC vtkm::Id operator()(vtkm::Id needle, const HaystackPortal& haystack) const
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{
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return vtkm::BinarySearch(haystack, needle);
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}
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};
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static void Run()
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{
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IdArray needles = vtkm::cont::make_ArrayHandle<vtkm::Id>({ -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 });
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IdArray haystack =
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vtkm::cont::make_ArrayHandle<vtkm::Id>({ -3, -2, -2, -2, 0, 0, 1, 1, 1, 4, 4 });
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IdArray results;
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std::vector<bool> expectedFound{
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false, true, true, false, true, true, false, false, true, false
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};
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vtkm::cont::Invoker invoke;
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invoke(Impl{}, needles, haystack, results);
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// Verify:
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auto needlesPortal = needles.ReadPortal();
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auto haystackPortal = haystack.ReadPortal();
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auto resultsPortal = results.ReadPortal();
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for (vtkm::Id i = 0; i < needles.GetNumberOfValues(); ++i)
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{
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if (expectedFound[static_cast<size_t>(i)])
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{
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const auto resIdx = resultsPortal.Get(i);
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const auto expVal = needlesPortal.Get(i);
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VTKM_TEST_ASSERT(resIdx >= 0);
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VTKM_TEST_ASSERT(haystackPortal.Get(resIdx) == expVal);
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}
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else
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{
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VTKM_TEST_ASSERT(resultsPortal.Get(i) == -1);
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}
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}
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}
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};
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void RunAlgorithmsTests()
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{
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std::cout << "Testing binary search." << std::endl;
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TestBinarySearch::Run();
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}
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} // anon namespace
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VTKM_DEPRECATED_SUPPRESS_END
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int UnitTestAlgorithms(int argc, char* argv[])
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{
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return vtkm::cont::testing::Testing::Run(RunAlgorithmsTests, argc, argv);
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}
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