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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkOpenFOAMReader.h"
#include "vtkCellData.h"
#include "vtkFloatArray.h"
#include "vtkInformation.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkNew.h"
#include "vtkPolyData.h"
#include "vtkTestUtilities.h"
#include <map>
int TestOpenFOAMReaderRegEx(int argc, char* argv[])
{
// Placeholder file in the OpenFOAM case
char* filename =
vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/OpenFOAM/regex/test.foam");
// Read the case to get list of boundary patches and fields
vtkNew<vtkOpenFOAMReader> reader;
reader->SetFileName(filename);
delete[] filename;
reader->Update();
// Re-read again, this time with all patches (i.e. polydata)
reader->EnableAllPatchArrays();
reader->EnableAllCellArrays();
reader->Update();
// Now, this is what we expect to be read from the OpenFOAM test case.
// Every time a field at a given patch is read and verified, its data
// are erased from this data structure, until at the end it should remain
// totally empty.
std::map<std::string, std::map<std::string, std::vector<double>>> expected_data = {
{
"inlet",
{
{ "p", { 0 } },
{ "U", { 1.0, 0.0, 0.0 } },
},
},
{
"outlet",
{
{ "p", { 0 } },
{ "U", { 1.0, 0.0, 0.0 } },
},
},
{
"frontAndBack",
{
{ "p", { 0 } },
{ "U", { 1.0, 0.0, 0.0 } },
},
},
{
"slippyWall", // present in the test case as "*Wall" regex only
{
{ "p", { 0 } },
{ "U", { 1.0, 0.0, 0.0 } },
},
},
{
"stickyWall", // present in the test case explicitly
{
{ "p", { 0 } },
{ "U", { 0.0, 0.0, 0.0 } },
},
},
};
// Print summary
vtkMultiBlockDataSet* result = reader->GetOutput();
if (result->GetNumberOfBlocks() > 1)
{
if (vtkMultiBlockDataSet* patches = vtkMultiBlockDataSet::SafeDownCast(result->GetBlock(1)))
{
int num_blocks = patches->GetNumberOfBlocks();
for (int i = 0; i < num_blocks; i++)
{
// Get name of this boundary patch and fail if this patch name is not expected
const char* patch_name = patches->GetMetaData(i)->Get(vtkCompositeDataSet::NAME());
if (!patch_name || expected_data.find(patch_name) == expected_data.end())
return EXIT_FAILURE;
if (vtkPolyData* patch = vtkPolyData::SafeDownCast(patches->GetBlock(i)))
{
if (vtkCellData* fields = patch->GetCellData())
{
for (int j = 0; j < fields->GetNumberOfArrays(); j++)
{
if (vtkFloatArray* array = vtkFloatArray::SafeDownCast(fields->GetAbstractArray(j)))
{
// Get name of this boundary field and fail if this name is not expected
const char* field_name = fields->GetArrayName(j);
if (!field_name ||
expected_data[patch_name].find(field_name) == expected_data[patch_name].end())
{
std::cout << "Unexpected field \"" << (field_name ? field_name : "(null)")
<< "\" at patch \"" << patch_name << "\"" << std::endl;
return EXIT_FAILURE;
}
// Fail if the number of components read is different than expected
const std::vector<double>& expected_components =
expected_data[patch_name][field_name];
int expected_num_components = static_cast<int>(expected_components.size());
if (expected_num_components != array->GetNumberOfComponents())
{
std::cout << "Unexpected number of components \""
<< array->GetNumberOfComponents() << "\" of field \"" << field_name
<< "\" at patch \"" << patch_name << "\"" << std::endl;
return EXIT_FAILURE;
}
// Fail if any field component is different than expected
for (int k = 0; k < array->GetNumberOfComponents(); k++)
{
if (array->GetValue(k) != expected_components[k])
{
std::cout << "Unexpected value \"" << array->GetValue(k) << "\" of component "
<< k << " of field \"" << field_name << "\" at patch \"" << patch_name
<< "\" (expected \"" << expected_components[k] << "\")" << std::endl;
return EXIT_FAILURE;
}
}
// OK, this boundary field is verified, and no longer expected -> remove
expected_data[patch_name].erase(field_name);
}
}
}
}
// OK, this boundary is verified -> remove
if (expected_data[patch_name].empty())
expected_data.erase(patch_name);
}
}
}
// By now, all expected data must have been read (and erased)
if (!expected_data.empty())
{
std::cout << "FAILURE! The following data were not read:" << std::endl;
for (const auto& p : expected_data)
{
std::cout << " patch \"" << p.first << "\"" << std::endl;
for (const auto& q : p.second)
std::cout << " field \"" << q.first << "\"" << std::endl;
}
}
return expected_data.empty() ? EXIT_SUCCESS : EXIT_FAILURE;
}
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