TEST: Check SurfaceDataFile retrieval

nibabel/cifti2/tests/test_caretspec.py

@@ -0,0 +1,35 @@
+from pathlib import Path
+import unittest
+
+from nibabel.cifti2.caretspec import *
+
+from nibabel.testing import data_path
+from nibabel.optpkg import optional_package
+
+requests, has_requests, _ = optional_package('requests')
+
+
+def test_CaretSpecFile():
+    fsLR = CaretSpecFile.from_filename(Path(data_path) / "fsLR.wb.spec")
+
+    assert fsLR.metadata == {}
+    assert fsLR.version == "1.0"
+    assert len(fsLR.data_files) == 5
+
+    for df in fsLR.data_files:
+        assert isinstance(df, CaretSpecDataFile)
+        if df.data_file_type == 'SURFACE':
+            assert isinstance(df, SurfaceDataFile)
+
+
+@unittest.skipUnless(has_requests, reason="Test fetches from URL")
+def test_SurfaceDataFile():
+    fsLR = CaretSpecFile.from_filename(Path(data_path) / "fsLR.wb.spec")
+    df = fsLR.data_files[0]
+    assert df.data_file_type == 'SURFACE'
+    try:
+        coords, triangles = df.get_mesh()
+    except IOError:
+        raise unittest.SkipTest(reason="Broken URL")
+    assert coords.shape == (32492, 3)
+    assert triangles.shape == (64980, 3)