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test_fun.py
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251 lines (205 loc) · 9.06 KB
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from git.test.lib import *
from git.objects.fun import (
traverse_tree_recursive,
traverse_trees_recursive,
tree_to_stream
)
from git.index.fun import (
aggressive_tree_merge
)
from gitdb.util import bin_to_hex
from gitdb.base import IStream
from gitdb.typ import str_tree_type
from stat import (
S_IFDIR,
S_IFREG,
S_IFLNK
)
from git.index import IndexFile
from cStringIO import StringIO
class TestFun(TestBase):
def _assert_index_entries(self, entries, trees):
index = IndexFile.from_tree(self.rorepo, *[self.rorepo.tree(bin_to_hex(t)) for t in trees])
assert entries
assert len(index.entries) == len(entries)
for entry in entries:
assert (entry.path, entry.stage) in index.entries
# END assert entry matches fully
def test_aggressive_tree_merge(self):
# head tree with additions, removals and modification compared to its predecessor
odb = self.rorepo.odb
HC = self.rorepo.commit("6c1faef799095f3990e9970bc2cb10aa0221cf9c")
H = HC.tree
B = HC.parents[0].tree
# entries from single tree
trees = [H.binsha]
self._assert_index_entries(aggressive_tree_merge(odb, trees), trees)
# from multiple trees
trees = [B.binsha, H.binsha]
self._assert_index_entries(aggressive_tree_merge(odb, trees), trees)
# three way, no conflict
tree = self.rorepo.tree
B = tree("35a09c0534e89b2d43ec4101a5fb54576b577905")
H = tree("4fe5cfa0e063a8d51a1eb6f014e2aaa994e5e7d4")
M = tree("1f2b19de3301e76ab3a6187a49c9c93ff78bafbd")
trees = [B.binsha, H.binsha, M.binsha]
self._assert_index_entries(aggressive_tree_merge(odb, trees), trees)
# three-way, conflict in at least one file, both modified
B = tree("a7a4388eeaa4b6b94192dce67257a34c4a6cbd26")
H = tree("f9cec00938d9059882bb8eabdaf2f775943e00e5")
M = tree("44a601a068f4f543f73fd9c49e264c931b1e1652")
trees = [B.binsha, H.binsha, M.binsha]
self._assert_index_entries(aggressive_tree_merge(odb, trees), trees)
# too many trees
self.failUnlessRaises(ValueError, aggressive_tree_merge, odb, trees*2)
def mktree(self, odb, entries):
"""create a tree from the given tree entries and safe it to the database"""
sio = StringIO()
tree_to_stream(entries, sio.write)
sio.seek(0)
istream = odb.store(IStream(str_tree_type, len(sio.getvalue()), sio))
return istream.binsha
@with_rw_repo('0.1.6')
def test_three_way_merge(self, rwrepo):
def mkfile(name, sha, executable=0):
return (sha, S_IFREG | 0644 | executable*0111, name)
def mkcommit(name, sha):
return (sha, S_IFDIR | S_IFLNK, name)
def assert_entries(entries, num_entries, has_conflict=False):
assert len(entries) == num_entries
assert has_conflict == (len([e for e in entries if e.stage != 0]) > 0)
mktree = self.mktree
shaa = "\1"*20
shab = "\2"*20
shac = "\3"*20
odb = rwrepo.odb
# base tree
bfn = 'basefile'
fbase = mkfile(bfn, shaa)
tb = mktree(odb, [fbase])
# non-conflicting new files, same data
fa = mkfile('1', shab)
th = mktree(odb, [fbase, fa])
fb = mkfile('2', shac)
tm = mktree(odb, [fbase, fb])
# two new files, same base file
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 3)
# both delete same file, add own one
fa = mkfile('1', shab)
th = mktree(odb, [fa])
fb = mkfile('2', shac)
tm = mktree(odb, [fb])
# two new files
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 2)
# same file added in both, differently
fa = mkfile('1', shab)
th = mktree(odb, [fa])
fb = mkfile('1', shac)
tm = mktree(odb, [fb])
# expect conflict
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 2, True)
# same file added, different mode
fa = mkfile('1', shab)
th = mktree(odb, [fa])
fb = mkcommit('1', shab)
tm = mktree(odb, [fb])
# expect conflict
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 2, True)
# same file added in both
fa = mkfile('1', shab)
th = mktree(odb, [fa])
fb = mkfile('1', shab)
tm = mktree(odb, [fb])
# expect conflict
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 1)
# modify same base file, differently
fa = mkfile(bfn, shab)
th = mktree(odb, [fa])
fb = mkfile(bfn, shac)
tm = mktree(odb, [fb])
# conflict, 3 versions on 3 stages
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 3, True)
# change mode on same base file, by making one a commit, the other executable
# no content change ( this is totally unlikely to happen in the real world )
fa = mkcommit(bfn, shaa)
th = mktree(odb, [fa])
fb = mkfile(bfn, shaa, executable=1)
tm = mktree(odb, [fb])
# conflict, 3 versions on 3 stages, because of different mode
trees = [tb, th, tm]
assert_entries(aggressive_tree_merge(odb, trees), 3, True)
for is_them in range(2):
# only we/they change contents
fa = mkfile(bfn, shab)
th = mktree(odb, [fa])
trees = [tb, th, tb]
if is_them:
trees = [tb, tb, th]
entries = aggressive_tree_merge(odb, trees)
assert len(entries) == 1 and entries[0].binsha == shab
# only we/they change the mode
fa = mkcommit(bfn, shaa)
th = mktree(odb, [fa])
trees = [tb, th, tb]
if is_them:
trees = [tb, tb, th]
entries = aggressive_tree_merge(odb, trees)
assert len(entries) == 1 and entries[0].binsha == shaa and entries[0].mode == fa[1]
# one side deletes, the other changes = conflict
fa = mkfile(bfn, shab)
th = mktree(odb, [fa])
tm = mktree(odb, [])
trees = [tb, th, tm]
if is_them:
trees = [tb, tm, th]
# as one is deleted, there are only 2 entries
assert_entries(aggressive_tree_merge(odb, trees), 2, True)
# END handle ours, theirs
def _assert_tree_entries(self, entries, num_trees):
for entry in entries:
assert len(entry) == num_trees
paths = set(e[2] for e in entry if e)
# only one path per set of entries
assert len(paths) == 1
# END verify entry
def test_tree_traversal(self):
# low level tree tarversal
odb = self.rorepo.odb
H = self.rorepo.tree('29eb123beb1c55e5db4aa652d843adccbd09ae18') # head tree
M = self.rorepo.tree('e14e3f143e7260de9581aee27e5a9b2645db72de') # merge tree
B = self.rorepo.tree('f606937a7a21237c866efafcad33675e6539c103') # base tree
B_old = self.rorepo.tree('1f66cfbbce58b4b552b041707a12d437cc5f400a') # old base tree
# two very different trees
entries = traverse_trees_recursive(odb, [B_old.binsha, H.binsha], '')
self._assert_tree_entries(entries, 2)
oentries = traverse_trees_recursive(odb, [H.binsha, B_old.binsha], '')
assert len(oentries) == len(entries)
self._assert_tree_entries(oentries, 2)
# single tree
is_no_tree = lambda i, d: i.type != 'tree'
entries = traverse_trees_recursive(odb, [B.binsha], '')
assert len(entries) == len(list(B.traverse(predicate=is_no_tree)))
self._assert_tree_entries(entries, 1)
# two trees
entries = traverse_trees_recursive(odb, [B.binsha, H.binsha], '')
self._assert_tree_entries(entries, 2)
# tree trees
entries = traverse_trees_recursive(odb, [B.binsha, H.binsha, M.binsha], '')
self._assert_tree_entries(entries, 3)
def test_tree_traversal_single(self):
max_count = 50
count = 0
odb = self.rorepo.odb
for commit in self.rorepo.commit("29eb123beb1c55e5db4aa652d843adccbd09ae18").traverse():
if count >= max_count:
break
count += 1
entries = traverse_tree_recursive(odb, commit.tree.binsha, '')
assert entries
# END for each commit