import os import filecmp import time import pytest import numpy as np from damask import VTK from damask import grid_filters @pytest.fixture def reference_dir(reference_dir_base): """Directory containing reference results.""" return reference_dir_base/'VTK' @pytest.fixture def default(): """Simple VTK.""" grid = np.array([5,6,7],int) size = np.array([.6,1.,.5]) return VTK.from_rectilinear_grid(grid,size) class TestVTK: @pytest.fixture(autouse=True) def _patch_execution_stamp(self, patch_execution_stamp): print('patched damask.util.execution_stamp') def test_rectilinearGrid(self,tmp_path): grid = np.random.randint(5,10,3)*2 size = np.random.random(3) + 1.0 origin = np.random.random(3) v = VTK.from_rectilinear_grid(grid,size,origin) string = v.__repr__() v.save(tmp_path/'rectilinearGrid',False) vtr = VTK.load(tmp_path/'rectilinearGrid.vtr') with open(tmp_path/'rectilinearGrid.vtk','w') as f: f.write(string) vtk = VTK.load(tmp_path/'rectilinearGrid.vtk','VTK_rectilinearGrid') assert(string == vtr.__repr__() == vtk.__repr__()) def test_polyData(self,tmp_path): points = np.random.rand(100,3) v = VTK.from_poly_data(points) string = v.__repr__() v.save(tmp_path/'polyData',False) vtp = VTK.load(tmp_path/'polyData.vtp') with open(tmp_path/'polyData.vtk','w') as f: f.write(string) vtk = VTK.load(tmp_path/'polyData.vtk','polyData') assert(string == vtp.__repr__() == vtk.__repr__()) @pytest.mark.parametrize('cell_type,n',[ ('VTK_hexahedron',8), ('TETRA',4), ('quad',4), ('VTK_TRIANGLE',3) ] ) def test_unstructuredGrid(self,tmp_path,cell_type,n): nodes = np.random.rand(n,3) connectivity = np.random.choice(np.arange(n),n,False).reshape(-1,n) v = VTK.from_unstructured_grid(nodes,connectivity,cell_type) string = v.__repr__() v.save(tmp_path/'unstructuredGrid',False) vtu = VTK.load(tmp_path/'unstructuredGrid.vtu') with open(tmp_path/'unstructuredGrid.vtk','w') as f: f.write(string) vtk = VTK.load(tmp_path/'unstructuredGrid.vtk','unstructuredgrid') assert(string == vtu.__repr__() == vtk.__repr__()) def test_parallel_out(self,tmp_path): points = np.random.rand(102,3) v = VTK.from_poly_data(points) fname_s = tmp_path/'single.vtp' fname_p = tmp_path/'parallel.vtp' v.save(fname_s,False) v.save(fname_p,True) for i in range(10): if os.path.isfile(fname_p) and filecmp.cmp(fname_s,fname_p): assert(True) return time.sleep(.5) assert(False) def test_compress(self,tmp_path): points = np.random.rand(102,3) v = VTK.from_poly_data(points) fname_c = tmp_path/'compressed.vtp' fname_p = tmp_path/'plain.vtp' v.save(fname_c,parallel=False,compress=False) v.save(fname_p,parallel=False,compress=True) assert(VTK.load(fname_c).__repr__() == VTK.load(fname_p).__repr__()) @pytest.mark.parametrize('fname',['a','a.vtp','a.b','a.b.vtp']) def test_filename_variations(self,tmp_path,fname): points = np.random.rand(102,3) v = VTK.from_poly_data(points) v.save(tmp_path/fname) @pytest.mark.parametrize('fname,dataset_type',[('a_file.vtk', None), ('a_file.vtk','vtk'), ('a_file.vtx', None)]) def test_invalid_dataset_type(self,tmp_path,fname,dataset_type): open(tmp_path/fname,'a').close() with pytest.raises(TypeError): VTK.load(tmp_path/fname,dataset_type) def test_file_not_found(self): with pytest.raises(FileNotFoundError): VTK.load('/dev/null') def test_add_extension(self,tmp_path,default): default.save(tmp_path/'default.txt',parallel=False) assert os.path.isfile(tmp_path/'default.txt.vtr') def test_invalid_get(self,default): with pytest.raises(ValueError): default.get('does_not_exist') def test_invalid_add_shape(self,default): with pytest.raises(ValueError): default.add(np.ones(3),'valid') def test_invalid_add_missing_label(self,default): data = np.random.randint(9,size=np.prod(np.array(default.vtk_data.GetDimensions())-1)) with pytest.raises(ValueError): default.add(data) def test_invalid_add_type(self,default): with pytest.raises(TypeError): default.add('invalid_type','valid') def test_comments(self,tmp_path,default): default.add_comments(['this is a comment']) default.save(tmp_path/'with_comments',parallel=False) new = VTK.load(tmp_path/'with_comments.vtr') assert new.get_comments() == ['this is a comment'] def test_compare_reference_polyData(self,update,reference_dir,tmp_path): points=np.dstack((np.linspace(0.,1.,10),np.linspace(0.,2.,10),np.linspace(-1.,1.,10))).squeeze() polyData = VTK.from_poly_data(points) polyData.add(points,'coordinates') if update: polyData.save(reference_dir/'polyData') else: reference = VTK.load(reference_dir/'polyData.vtp') assert polyData.__repr__() == reference.__repr__() and \ np.allclose(polyData.get('coordinates'),points) def test_compare_reference_rectilinearGrid(self,update,reference_dir,tmp_path): grid = np.array([5,6,7],int) size = np.array([.6,1.,.5]) rectilinearGrid = VTK.from_rectilinear_grid(grid,size) c = grid_filters.cell_coord0(grid,size).reshape(-1,3,order='F') n = grid_filters.node_coord0(grid,size).reshape(-1,3,order='F') rectilinearGrid.add(c,'cell') rectilinearGrid.add(n,'node') if update: rectilinearGrid.save(reference_dir/'rectilinearGrid') else: reference = VTK.load(reference_dir/'rectilinearGrid.vtr') assert rectilinearGrid.__repr__() == reference.__repr__() and \ np.allclose(rectilinearGrid.get('cell'),c)