unit test for mghimage module

tests/test_mghimage.py

+#!/usr/bin/env python
+#
+# test_mghimage.py -
+#
+# Author: Paul McCarthy <pauldmccarthy@gmail.com>
+#
+
+
+import os.path as op
+
+import numpy   as np
+import nibabel as nib
+
+from . import testdir
+
+import fsl.data.mghimage as fslmgh
+
+
+def test_looksLikeMGHImage():
+
+    lookLike   = ['test.mgz', 'test.mgh']
+    noLookLike = ['test.nii', 'test', 'testmgh.mga', 'test.mgza', 'test.mgha']
+
+
+    for l  in lookLike:   assert     fslmgh.looksLikeMGHImage(l)
+    for nl in noLookLike: assert not fslmgh.looksLikeMGHImage(nl)
+
+
+def test_MGHImage():
+
+    datadir  = op.join(op.dirname(__file__), 'testdata')
+    testfile = op.join(datadir, 'example.mgz')
+
+    img      = fslmgh.MGHImage(testfile)
+    nbimg    = nib.load(testfile)
+
+    assert np.all(np.isclose(img[:],            nbimg.get_data()))
+    assert np.all(np.isclose(img.voxToWorldMat, nbimg.affine))