Add test to showcase error

scripts/scil_volume_resample.py

@@ -68,6 +68,7 @@ def main():
     assert_inputs_exist(parser, args.in_image, args.ref)
     assert_outputs_exist(parser, args, args.out_image)
     assert_headers_compatible(parser, args.in_image, args.ref)
+    assert_headers_compatible(parser, args.in_image, args.ref)
 
     if args.enforce_dimensions and not args.ref:
         parser.error("Cannot enforce dimensions without a reference image")

scripts/tests/test_volume_resample.py

@@ -10,17 +10,24 @@
 # If they already exist, this only takes 5 seconds (check md5sum)
 fetch_data(get_testing_files_dict(), keys=['others.zip'])
 tmp_dir = tempfile.TemporaryDirectory()
+in_img = os.path.join(SCILPY_HOME, 'others', 'fa.nii.gz')
 
 
 def test_help_option(script_runner):
     ret = script_runner.run('scil_volume_resample.py', '--help')
     assert ret.success
 
 
-def test_execution_others(script_runner, monkeypatch):
+def test_execution_given_size(script_runner, monkeypatch):
     monkeypatch.chdir(os.path.expanduser(tmp_dir.name))
-    in_img = os.path.join(SCILPY_HOME, 'others',
-                          'fa.nii.gz')
     ret = script_runner.run('scil_volume_resample.py', in_img,
                             'fa_resample.nii.gz', '--voxel_size', '2')
     assert ret.success
+
+
+def test_execution_ref(script_runner, monkeypatch):
+    monkeypatch.chdir(os.path.expanduser(tmp_dir.name))
+    ref = os.path.join(SCILPY_HOME, 'others', 'fa_resample.nii.gz')
+    ret = script_runner.run('scil_volume_resample.py', in_img,
+                            'fa_resample2.nii.gz', '--ref', ref)
+    assert ret.success