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Make unknown metadata persist accross import-export

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* +improve test.
This commit is contained in:
Victor Shnayder
2012-08-03 15:28:48 -04:00
committed by Calen Pennington
parent d09e2261f3
commit b285f50d92
2 changed files with 39 additions and 18 deletions
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40
common/lib/xmodule/xmodule/tests/test_import.py
View File

@@ -111,30 +111,50 @@ class ImportTestCase(unittest.TestCase):
xml_out = etree.fromstring(xml_str_out)
self.assertEqual(xml_out.tag, 'sequential')
def test_metadata_inherit(self):
"""Make sure metadata inherits properly"""
def test_metadata_import_export(self):
"""Two checks:
- unknown metadata is preserved across import-export
- inherited metadata doesn't leak to children.
"""
system = self.get_system()
v = "1 hour"
start_xml = '''<course graceperiod="{grace}" url_name="test1" display_name="myseq">
<chapter url="hi" url_name="ch" display_name="CH">
<html url_name="h" display_name="H">Two houses, ...</html></chapter>
</course>'''.format(grace=v)
start_xml = '''
<course graceperiod="{grace}" url_name="test1" unicorn="purple">
<chapter url="hi" url_name="ch" display_name="CH">
<html url_name="h" display_name="H">Two houses, ...</html>
</chapter>
</course>'''.format(grace=v)
descriptor = XModuleDescriptor.load_from_xml(start_xml, system,
'org', 'course')
print "Errors: {0}".format(system.errorlog.errors)
print descriptor, descriptor.metadata
self.assertEqual(descriptor.metadata['graceperiod'], v)
self.assertEqual(descriptor.metadata['unicorn'], 'purple')
# Check that the child inherits correctly
# Check that the child inherits graceperiod correctly
child = descriptor.get_children()[0]
self.assertEqual(child.metadata['graceperiod'], v)
# Now export and see if the chapter tag has a graceperiod attribute
# check that the child does _not_ inherit any unicorns
self.assertTrue('unicorn' not in child.metadata)
# Now export and check things
resource_fs = MemoryFS()
exported_xml = descriptor.export_to_xml(resource_fs)
print "Exported xml:", exported_xml
# hardcode path to child
# Does the course still have unicorns?
# hardcoded path to course
with resource_fs.open('course/test1.xml') as f:
course_xml = etree.fromstring(f.read())
self.assertEqual(course_xml.attrib['unicorn'], 'purple')
# did we successfully strip the url_name from the definition contents?
self.assertTrue('url_name' not in course_xml.attrib)
# Does the chapter tag now have a graceperiod attribute?
# hardcoded path to child
with resource_fs.open('chapter/ch.xml') as f:
chapter_xml = etree.fromstring(f.read())
self.assertEqual(chapter_xml.tag, 'chapter')

17
common/lib/xmodule/xmodule/xml_module.py
View File

@@ -47,6 +47,10 @@ class XmlDescriptor(XModuleDescriptor):
# VS[compat] Remove once unused.
'name', 'slug')
# VS[compat] -- remove once everything is in the CMS
# We don't want url_name in the metadata--it's in the location, so avoid
# confusion and duplication.
metadata_to_strip = ('url_name', )
# A dictionary mapping xml attribute names AttrMaps that describe how
# to import and export them
@@ -166,12 +170,16 @@ class XmlDescriptor(XModuleDescriptor):
Returns a dictionary {key: value}.
"""
metadata = {}
for attr in cls.metadata_attributes:
for attr in xml_object.attrib:
val = xml_object.get(attr)
if val is not None:
# VS[compat]. Remove after all key translations done
attr = cls._translate(attr)
if attr in cls.metadata_to_strip:
# don't load these
continue
attr_map = cls.xml_attribute_map.get(attr, AttrMap())
metadata[attr] = attr_map.from_xml(val)
return metadata
@@ -250,15 +258,8 @@ class XmlDescriptor(XModuleDescriptor):
# Add the non-inherited metadata
for attr in self.own_metadata:
if attr not in self.metadata_attributes:
log.warning("Unexpected metadata '{attr}' on element '{url}'."
" Not exporting.".format(attr=attr,
url=self.location.url()))
continue
xml_object.set(attr, val_for_xml(attr))
# Write the actual contents to a file
filepath = self.__class__._format_filepath(self.category, self.url_name)
resource_fs.makedir(os.path.dirname(filepath), allow_recreate=True)