def test_memoryfs_text():
"""
write and read text file
:return:
"""
mem = MemoryFS()
data_path = 'a.txt'
for i in range(10):
mem.appendtext(data_path, str(i))
for line in mem.readtext(data_path):
print('read:{}'.format(line.strip()))
def test_update_from_single_version(self) -> None:
fs = MemoryFS()
mv = Multiversioned(fs)
d = {
"file1.txt": "file1",
"file2.txt": "file2",
"dir1": {
"file1.txt": "file1",
"file2.txt": "file2"
},
"dir2": {
"file1.txt": "file1",
"file2.txt": "file2"
},
}
bundle_lidvid = LIDVID("urn:nasa:pds:b::1.0")
bundle_lid = bundle_lidvid.lid()
no_lidvids: Set[LIDVID] = set()
def create_bundle() -> None:
lidvids = [create_collection(bundle_lid, c) for c in ["c1", "c2"]]
contents = dictionary_to_contents(set(lidvids), d)
mv.add_contents_if(is_new, bundle_lid, contents)
def create_collection(bundle_lid: LID, c: str) -> LIDVID:
lid = bundle_lid.extend_lid(c)
lidvids = [create_product(lid, p) for p in ["p1", "p2"]]
contents = dictionary_to_contents(set(lidvids), d)
return mv.add_contents_if(is_new, lid, contents)
def create_product(coll_lid: LID, p: str) -> LIDVID:
lid = coll_lid.extend_lid(p)
contents = dictionary_to_contents(no_lidvids, d)
return mv.add_contents_if(is_new, lid, contents)
create_bundle()
vv = VersionView(mv, bundle_lidvid)
c = COWFS(vv, MemoryFS(), MemoryFS())
path = "/b$/c2$/p1$/dir1/file2.txt"
c.writetext(path, "xxxx")
latest_lidvid = mv.latest_lidvid(LID("urn:nasa:pds:b"))
# Update from the COWFS.
mv.update_from_single_version(is_new, c)
self.assertNotEqual(latest_lidvid,
mv.latest_lidvid(LID("urn:nasa:pds:b")))
latest_lidvid = mv.latest_lidvid(LID("urn:nasa:pds:b"))
# changed files are changed
self.assertEqual("file2", fs.readtext("b/c2/p1/v$1.0/dir1/file2.txt"))
self.assertEqual("xxxx", fs.readtext("b/c2/p1/v$2.0/dir1/file2.txt"))
# unchanged files are unchanged
self.assertEqual("file1", fs.readtext("b/c2/p1/v$1.0/dir1/file1.txt"))
self.assertEqual("file1", fs.readtext("b/c2/p1/v$2.0/dir1/file1.txt"))
# Change started in b/c2/p1. Check which versions are affected.
self.assertEqual(
VID("2.0"),
cast(LIDVID, mv.latest_lidvid(LID("urn:nasa:pds:b"))).vid())
self.assertEqual(
VID("1.0"),
cast(LIDVID, mv.latest_lidvid(LID("urn:nasa:pds:b:c1"))).vid())
self.assertEqual(
VID("2.0"),
cast(LIDVID, mv.latest_lidvid(LID("urn:nasa:pds:b:c2"))).vid())
self.assertEqual(
VID("2.0"),
cast(LIDVID, mv.latest_lidvid(LID("urn:nasa:pds:b:c2:p1"))).vid(),
)
self.assertEqual(
VID("1.0"),
cast(LIDVID, mv.latest_lidvid(LID("urn:nasa:pds:b:c2:p2"))).vid(),
)
# Now try updating again. Nothing should change.
mv.update_from_single_version(is_new, c)
self.assertEqual(latest_lidvid,
mv.latest_lidvid(LID("urn:nasa:pds:b")))
def test_write_subdir_versions(self) -> None:
fs = MemoryFS()
write_subdir_versions_to_directory(fs, "/", self.d)
self.assertEqual(self.txt, fs.readtext(SUBDIR_VERSIONS_FILENAME))
fs.close()
