test(mesh-io): add emscripten test_vtk

packages/mesh-io/python/itkwasm-mesh-io-emscripten/pyproject.toml

@@ -52,7 +52,7 @@ Source = "https://github.com/InsightSoftwareConsortium/itk-wasm"
 [tool.hatch.envs.default.scripts]
 test = [
   "hatch build -t wheel",
-  "pytest --dist-dir=./dist --rt=chrome",
+  "pytest -s --dist-dir=./dist --rt=chrome",
 ]
 download-pyodide = [
   "curl -L https://github.com/pyodide/pyodide/releases/download/0.24.1/pyodide-0.24.1.tar.bz2 -o pyodide.tar.bz2",

packages/mesh-io/python/itkwasm-mesh-io-emscripten/test/fixtures.py

@@ -6,20 +6,18 @@
 
 from pytest_pyodide import run_in_pyodide
 
-from itkwasm_image_io_emscripten import __version__ as test_package_version
+from itkwasm_mesh_io_emscripten import __version__ as test_package_version
 
 @pytest.fixture
 def package_wheel():
-    return f"itkwasm_image_io_emscripten-{test_package_version}-py3-none-any.whl"
+    return f"itkwasm_mesh_io_emscripten-{test_package_version}-py3-none-any.whl"
 
 @pytest.fixture
 def input_data():
     from pathlib import Path
     input_base_path = Path('..', '..', 'test', 'data')
     test_files = [
-        Path('input') / 'cthead1.png',
-        Path('input') / 'biorad.pic',
-        Path('input') / 'brainweb165a10f17.mha',
+        Path('input') / 'cow.vtk',
     ]
     data = {}
     for f in test_files:

packages/mesh-io/python/itkwasm-mesh-io-emscripten/test/test_vtk_poly_data.py

@@ -0,0 +1,53 @@
+import sys
+
+if sys.version_info < (3,10):
+    pytest.skip("Skipping pyodide tests on older Python", allow_module_level=True)
+
+from pytest_pyodide import run_in_pyodide
+from .fixtures import package_wheel, input_data
+
+@run_in_pyodide(packages=['micropip', 'numpy'])
+async def test_vtk_poly_data_async(selenium, package_wheel, input_data):
+    import micropip
+    await micropip.install(package_wheel)
+    def write_input_data_to_fs(input_data, filename):
+        with open(filename, 'wb') as fp:
+            fp.write(input_data[filename])
+
+    from pathlib import Path
+    from itkwasm import FloatTypes, IntTypes
+    import numpy as np
+
+    from itkwasm_mesh_io_emscripten import vtk_poly_data_read_mesh_async, vtk_poly_data_write_mesh_async
+
+    def verify_mesh(mesh):
+        assert mesh.meshType.dimension == 3
+        assert mesh.meshType.pointComponentType == FloatTypes.Float32
+        assert mesh.meshType.pointPixelComponentType == IntTypes.Int8
+        assert mesh.numberOfPoints == 2903
+        assert np.allclose(mesh.points.ravel()[0], 3.71636)
+        assert np.allclose(mesh.points.ravel()[1], 2.34339)
+        assert mesh.numberOfCells == 3263
+        assert mesh.cellBufferSize == 18856
+        assert mesh.cells[0] == 4
+        assert mesh.cells[1] == 4
+        assert mesh.cells[2] == 250
+
+    test_file_path = 'cow.vtk'
+    write_input_data_to_fs(input_data, test_file_path)
+
+    assert Path(test_file_path).exists()
+
+    could_read, mesh = await vtk_poly_data_read_mesh_async(test_file_path)
+    assert could_read
+    verify_mesh(mesh)
+
+    test_output_file_path = 'cow_out.vtk'
+
+    use_compression = False
+    could_write = await vtk_poly_data_write_mesh_async(mesh, test_output_file_path, use_compression)
+    assert could_write
+
+    could_read, mesh = await vtk_poly_data_read_mesh_async(test_output_file_path)
+    assert could_read
+    verify_mesh(mesh)

packages/mesh-io/python/itkwasm-mesh-io-wasi/tests/test_vtk.py

@@ -15,8 +15,9 @@ def verify_mesh(mesh):
     assert mesh.meshType.pointComponentType == FloatTypes.Float32
     assert mesh.meshType.pointPixelComponentType == IntTypes.Int8
     assert mesh.numberOfPoints == 2903
-    assert np.allclose(mesh.points[0],3.71636)
-    assert np.allclose(mesh.points[1],2.34339)
+    assert np.allclose(mesh.points.ravel()[0], 3.71636)
+    assert np.allclose(mesh.points.ravel()[1], 2.34339)
+    print(mesh.points.shape)
     assert mesh.numberOfCells == 3263
     assert mesh.cellBufferSize == 18856
     assert mesh.cells[0] == 4