[yt-dev] [yt_analysis/yt] Flash answer tests needs to be regenerated (issue #560)

[Kacper Kowalik]

New issue 560: Flash answer tests needs to be regenerated
https://bitbucket.org/yt_analysis/yt/issue/560/flash-answer-tests-needs-to-be-regenerated

Kacper Kowalik:

Due to recent [commit](https://bitbucket.org/yt_analysis/yt/commits/532858bcf68d/) several tests for flash frontend fail with

```
#!bash

  File "/usr/lib64/python2.7/unittest/case.py", line 327, in run
    testMethod()
  File "/usr/lib64/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/utilities/answer_testing/framework.py", line 305, in __call__
    nv = self.run()
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/utilities/answer_testing/framework.py", line 449, in run
    data_source = obj)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 1760, in __init__
    self._refresh_data()
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 320, in _refresh_data
    self.get_data()
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 1861, in get_data
    self._add_level_to_tree(tree, level, fields)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 1983, in _add_level_to_tree
    self._add_grid_to_tree(tree, grid, fields, zero_out, dls)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 1927, in _add_grid_to_tree
    for fd in self._get_data_from_grid(grid, fields)]
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 95, in save_state
    tr = func(self, grid, field, *args, **kwargs)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/data_containers.py", line 2005, in _get_data_from_grid
    return [grid[field] * bad_points for field in fields]
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/grid_patch.py", line 157, in __getitem__
    self.get_data(key)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/grid_patch.py", line 200, in get_data
    self._generate_field(field)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/grid_patch.py", line 145, in _generate_field
    self[field] = self.pf.field_info[field](self)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/field_info_container.py", line 393, in __call__
    dd = self._function(self, data)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/field_info_container.py", line 151, in _TranslationFunc
    return data[field_name]
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/grid_patch.py", line 157, in __getitem__
    self.get_data(key)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/grid_patch.py", line 200, in get_data
    self._generate_field(field)
  File "/tmp/jenkins/workspace/py2.7-yt-2.x_testing/yt/data_objects/grid_patch.py", line 147, in _generate_field
    raise exceptions.KeyError(field)
'velo'
```