obsolescence: add test for the "branch replacement" logic during push, case B3
Mercurial checks for the introduction of new heads on push. Evolution comes
into play to detect if existing branches on the server are being replaced by
some of the new one we push.
The current code for this logic is very basic (eg: issue4354) and was poorly
tested. We have a better implementation coming in the evolve extension fixing
these issues and with more serious tests coverage. In the process of upstreaming
this improved logic, we start with adding the test case that are already passing
with the current implementation. Once they are all in, we'll upstream the better
implementation and the extra test cases.
See inline documentation for details about the test case added in this
changeset.
#!/usr/bin/env python
"""This does HTTP GET requests given a host:port and path and returns
a subset of the headers plus the body of the result."""
from __future__ import absolute_import, print_function
import json
import os
import sys
from mercurial import (
util,
)
httplib = util.httplib
try:
import msvcrt
msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
except ImportError:
pass
twice = False
if '--twice' in sys.argv:
sys.argv.remove('--twice')
twice = True
headeronly = False
if '--headeronly' in sys.argv:
sys.argv.remove('--headeronly')
headeronly = True
formatjson = False
if '--json' in sys.argv:
sys.argv.remove('--json')
formatjson = True
hgproto = None
if '--hgproto' in sys.argv:
idx = sys.argv.index('--hgproto')
hgproto = sys.argv[idx + 1]
sys.argv.pop(idx)
sys.argv.pop(idx)
tag = None
def request(host, path, show):
assert not path.startswith('/'), path
global tag
headers = {}
if tag:
headers['If-None-Match'] = tag
if hgproto:
headers['X-HgProto-1'] = hgproto
conn = httplib.HTTPConnection(host)
conn.request("GET", '/' + path, None, headers)
response = conn.getresponse()
print(response.status, response.reason)
if show[:1] == ['-']:
show = sorted(h for h, v in response.getheaders()
if h.lower() not in show)
for h in [h.lower() for h in show]:
if response.getheader(h, None) is not None:
print("%s: %s" % (h, response.getheader(h)))
if not headeronly:
print()
data = response.read()
# Pretty print JSON. This also has the beneficial side-effect
# of verifying emitted JSON is well-formed.
if formatjson:
# json.dumps() will print trailing newlines. Eliminate them
# to make tests easier to write.
data = json.loads(data)
lines = json.dumps(data, sort_keys=True, indent=2).splitlines()
for line in lines:
print(line.rstrip())
else:
sys.stdout.write(data)
if twice and response.getheader('ETag', None):
tag = response.getheader('ETag')
return response.status
status = request(sys.argv[1], sys.argv[2], sys.argv[3:])
if twice:
status = request(sys.argv[1], sys.argv[2], sys.argv[3:])
if 200 <= status <= 305:
sys.exit(0)
sys.exit(1)