Corrected tests for N4BiasFieldCorrection and ran make specs

Author: blakedewey

nipype/interfaces/ants/segmentation.py

@@ -283,14 +283,14 @@ class N4BiasFieldCorrection(ANTSCommand):
 --shrink-factor 3'
 
 	>>> n4_2 = copy.deepcopy(n4)
-    >>> n4.inputs.convergence_threshold = 1e-6
+    >>> n4_2.inputs.convergence_threshold = 1e-6
     >>> n4_2.cmdline
     'N4BiasFieldCorrection --bspline-fitting [ 300 ] \
 -d 3 --input-image structural.nii \
 --convergence [ 50x50x30x20, 1e-06 ] --output structural_corrected.nii \
 --shrink-factor 3'
 
-    >>> n4_3 = copy.deepcopy(n4)
+    >>> n4_3 = copy.deepcopy(n4_2)
     >>> n4_3.inputs.bspline_order = 5
     >>> n4_3.cmdline
     'N4BiasFieldCorrection --bspline-fitting [ 300, 5 ] \

nipype/interfaces/ants/tests/test_auto_N4BiasFieldCorrection.py

@@ -13,7 +13,7 @@ def test_N4BiasFieldCorrection_inputs():
     ),
     convergence_threshold=dict(requires=['n_iterations'],
     ),
-    dimension=dict(argstr='--image-dimension %d',
+    dimension=dict(argstr='-d %d',
     usedefault=True,
     ),
     environ=dict(nohash=True,
@@ -28,7 +28,6 @@ def test_N4BiasFieldCorrection_inputs():
     mask_image=dict(argstr='--mask-image %s',
     ),
     n_iterations=dict(argstr='--convergence %s',
-    requires=['convergence_threshold'],
     ),
     num_threads=dict(nohash=True,
     usedefault=True,