def test_export_with_None_value(self):
"""
Export and import a single AssetMetadata to XML with a None created_by field, without causing an exception.
"""
asset_md = AssetMetadata(self.course_id.make_asset_key("asset", "none_value"), created_by=None)
asset = etree.Element("asset")
asset_md.to_xml(asset)
asset_md.from_xml(asset)
def test_export_with_None_value(self):
"""
Export and import a single AssetMetadata to XML with a None created_by field, without causing an exception.
"""
asset_md = AssetMetadata(
self.course_id.make_asset_key('asset', 'none_value'),
created_by=None,
)
asset = etree.Element("asset")
asset_md.to_xml(asset)
asset_md.from_xml(asset)
def _import_course_asset_metadata(store, data_dir, course_id,
raise_on_failure):
"""
Read in assets XML file, parse it, and add all asset metadata to the modulestore.
"""
asset_dir = path(data_dir) / AssetMetadata.EXPORTED_ASSET_DIR
assets_filename = AssetMetadata.EXPORTED_ASSET_FILENAME
asset_xml_file = asset_dir / assets_filename
def make_asset_id(course_id, asset_xml):
"""
Construct an asset ID out of a complete asset XML section.
"""
asset_type = None
asset_name = None
for child in asset_xml.iterchildren():
if child.tag == AssetMetadata.ASSET_TYPE_ATTR:
asset_type = child.text
elif child.tag == AssetMetadata.ASSET_BASENAME_ATTR:
asset_name = child.text
return course_id.make_asset_key(asset_type, asset_name)
all_assets = []
try:
xml_data = etree.parse(asset_xml_file).getroot()
assert (xml_data.tag == AssetMetadata.ALL_ASSETS_XML_TAG)
for asset in xml_data.iterchildren():
if asset.tag == AssetMetadata.ASSET_XML_TAG:
# Construct the asset key.
asset_key = make_asset_id(course_id, asset)
asset_md = AssetMetadata(asset_key)
asset_md.from_xml(asset)
all_assets.append(asset_md)
except IOError:
logging.info('No {} file is present with asset metadata.'.format(
assets_filename))
return
except Exception: # pylint: disable=W0703
logging.exception('Error while parsing asset xml.')
if raise_on_failure:
raise
else:
return
# Now add all asset metadata to the modulestore.
if len(all_assets) > 0:
store.save_asset_metadata_list(all_assets,
all_assets[0].edited_by,
import_only=True)
def import_asset_metadata(self, data_dir, course_id):
"""
Read in assets XML file, parse it, and add all asset metadata to the modulestore.
"""
asset_dir = path(data_dir) / AssetMetadata.EXPORTED_ASSET_DIR
assets_filename = AssetMetadata.EXPORTED_ASSET_FILENAME
asset_xml_file = asset_dir / assets_filename
def make_asset_id(course_id, asset_xml):
"""
Construct an asset ID out of a complete asset XML section.
"""
asset_type = None
asset_name = None
for child in asset_xml.iterchildren():
if child.tag == AssetMetadata.ASSET_TYPE_ATTR:
asset_type = child.text
elif child.tag == AssetMetadata.ASSET_BASENAME_ATTR:
asset_name = child.text
return course_id.make_asset_key(asset_type, asset_name)
all_assets = []
try:
xml_data = etree.parse(asset_xml_file).getroot() # pylint: disable=no-member
assert xml_data.tag == AssetMetadata.ALL_ASSETS_XML_TAG
for asset in xml_data.iterchildren():
if asset.tag == AssetMetadata.ASSET_XML_TAG:
# Construct the asset key.
asset_key = make_asset_id(course_id, asset)
asset_md = AssetMetadata(asset_key)
asset_md.from_xml(asset)
all_assets.append(asset_md)
except IOError:
logging.info('No %s file is present with asset metadata.', assets_filename)
return
except Exception: # pylint: disable=W0703
logging.exception('Error while parsing asset xml.')
if self.raise_on_failure:
raise
else:
return
# Now add all asset metadata to the modulestore.
if len(all_assets) > 0:
self.store.save_asset_metadata_list(all_assets, all_assets[0].edited_by, import_only=True)
def test_export_single_asset_to_from_xml(self):
"""
Export a single AssetMetadata to XML and verify the structure and fields.
"""
asset_md = self.course_assets[0]
root = etree.Element("assets")
asset = etree.SubElement(root, "asset")
asset_md.to_xml(asset)
# If this line does *not* raise, the XML is valid.
etree.fromstring(etree.tostring(root), self.xmlparser)
new_asset_key = self.course_id.make_asset_key('tmp', 'tmp')
new_asset_md = AssetMetadata(new_asset_key)
new_asset_md.from_xml(asset)
# Compare asset_md to new_asset_md.
for attr in AssetMetadata.ALL_ATTRS:
orig_value = getattr(asset_md, attr)
new_value = getattr(new_asset_md, attr)
self.assertEqual(orig_value, new_value)
