addd test to find misorder in mlist

Author: cindeem

nibabel/tests/test_ecat.py

@@ -100,6 +100,15 @@ def test_mlist(self):
         dt = dt.newbyteorder('>')
         mats = np.recarray(shape=(32,4), dtype=dt,  buf=dat)
         fid.close()
+        badordermlist = mlist
+        badordermlist._mlist = np.array([[  1.68427540e+07,   3.00000000e+00,   1.20350000e+04, 1.00000000e+00],
+                                         [  1.68427530e+07,   1.20360000e+04,   2.40680000e+04, 1.00000000e+00],
+                                         [  1.68427550e+07,   2.40690000e+04,   3.61010000e+04, 1.00000000e+00],
+                                         [  1.68427560e+07,   3.61020000e+04,   4.81340000e+04, 1.00000000e+00],
+                                         [  1.68427570e+07,   4.81350000e+04,   6.01670000e+04, 1.00000000e+00],
+                                         [  1.68427580e+07,   6.01680000e+04,   7.22000000e+04,1.00000000e+00]])
+
+        assert_true(badordermlist.get_frame_order()[0][0] == 1)                       
         assert_true(mats['matlist'][0,0] +  mats['matlist'][0,3] == 31)
         assert_true(mlist.get_frame_order()[0][0] == 0)
         assert_true(mlist.get_frame_order()[0][1] == 16842758.0)