enh: raise base coverage

Author: mgxd

nitransforms/tests/test_base.py

@@ -0,0 +1,18 @@
+"""Tests of the base module"""
+import numpy as np
+
+from ..base import ImageSpace
+
+
+def test_ImageSpace(get_data):
+    im = get_data['RAS']
+
+    img = ImageSpace(im)
+    assert img.affine == np.linalg.inv(img.inverse)
+
+    # nd index / coords
+    idxs = img.ndindex
+    coords = img.ndcoords
+    assert len(idxs.shape) == len(coords.shape) == 2
+    assert idxs.shape[0] == coords.shape[0] == img.ndim == 3
+    assert idxs.shape[1] == coords.shape[1] == img.nvox == np.prod(im.shape)