fix: dcm2niix flag in sorted order

Author: satra

nipype/interfaces/dcm2nii.py

@@ -235,6 +235,7 @@ class Dcm2niixOutputSpec(TraitedSpec):
 
 class Dcm2niix(CommandLine):
     """Uses Chris Rorden's dcm2niix to convert dicom files
+
     Examples
     ========
     >>> from nipype.interfaces.dcm2nii import Dcm2niix
@@ -243,8 +244,12 @@ class Dcm2niix(CommandLine):
     >>> converter.inputs.compress = 'i'
     >>> converter.inputs.single_file = True
     >>> converter.inputs.output_dir = '.'
-    >>> converter.cmdline
+    >>> converter.cmdline # doctest: +SKIP
     'dcm2niix -b y -z i -x n -t n -m n -f %t%p -o . -s y -v n functional_1.dcm'
+
+    >>> flags = '-'.join([val.strip() + ' ' for val in sorted(' '.join(converter.cmdline.split()[1:-1]).split('-'))])
+    >>> flags
+    ' -b y -f %t%p -m n -o . -s y -t n -v n -x n -z i '
     """
 
     input_spec = Dcm2niixInputSpec