sapling/eden/hg-server/tests/test-rebase-inmemory-mergedriver.t
Durham Goode 98d9269874 server: copy hg to a new hg-server directory
Summary:
Create a fork of the Mercurial code that we can use to build server
rpms. The hg servers will continue to exist for a few more months while we move
the darkstorm and ediscovery use cases off them. In the mean time, we want to
start making breaking changes to the client, so let's create a stable copy of
the hg code to produce rpms for the hg servers.

The fork is based off c7770c78d, the latest hg release.

This copies the files as is, then adds some minor tweaks to get it to build:
- Disables some lint checks that appear to be bypassed by path
- sed replace eden/scm with eden/hg-server
- Removed a dependency on scm/telemetry from the edenfs-client tests since
  scm/telemetry pulls in the original eden/scm/lib/configparser which conflicts
  with the hg-server conflict parser.

allow-large-files

Reviewed By: quark-zju

Differential Revision: D27632557

fbshipit-source-id: b2f442f4ec000ea08e4d62de068750832198e1f4
2021-04-09 10:09:06 -07:00

100 lines
3.3 KiB
Perl

$ configure mutation-norecord
Test mergedriver invalidation with IMM.
$ newrepo
$ enable rebase
$ setconfig rebase.singletransaction=True
$ setconfig rebase.experimental.inmemory=True
$ setconfig rebase.experimental.inmemorywarning="rebasing in-memory!"
$ mkdir driver
$ cat > driver/__init__.py <<EOF
> from .generators import someFunction, VERSION
> def preprocess(ui, repo, hooktype, mergestate, wctx, labels=None):
> unresolved_files = list(mergestate.unresolved())
> ui.warn("generators version = %s\n" % VERSION)
> someFunction(repo)
> for unresolved_file in unresolved_files:
> mergestate.mark(unresolved_file, 'd')
> mergestate.commit()
> def conclude(ui, repo, hooktype, mergestate, wctx, labels=None):
> pass
> EOF
$ cat > driver/generators.py <<EOF
> VERSION = "BASE"
> def someFunction(repo):
> repo.ui.warn("base's someFunction() called\n")
> pass
> EOF
$ setconfig experimental.mergedriver=python:driver/
A dummy file (FILE) is created to force a simple three-way merge (without
conflicts, though a conflict would work too). Otherwise, mergedriver won't run.
$ $TESTDIR/seq.py 1 10 > FILE
$ hg add FILE
$ hg commit -Aq -m "base mergedriver"
$ hg book -r . "base"
Next, off of BASE, make an API change to the driver.
$ cat > driver/__init__.py <<EOF
> from .generators import someFunction, VERSION
>
> def preprocess(ui, repo, hooktype, mergestate, wctx, labels=None):
> unresolved_files = list(mergestate.unresolved())
> ui.warn("generators version = %s\n" % VERSION)
> someFunction(repo, "new_required")
>
> for unresolved_file in unresolved_files:
> mergestate.mark(unresolved_file, 'd')
>
> mergestate.commit()
>
> def conclude(ui, repo, hooktype, mergestate, wctx, labels=None):
> pass
> EOF
$ cat > driver/generators.py <<EOF
> VERSION = "NEW"
>
> def someFunction(repo, new_required_arg):
> repo.ui.write("new_required_arg = %s\n" % new_required_arg)
> pass
> EOF
$ $TESTDIR/seq.py 1 11 > FILE
$ hg com -m "new driver"
$ hg book -r . new_driver
$ hg up -q .~1
Next make a change to the dummy file off BASE.
$ hg up base
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark base)
$ hg up -C .
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(leaving bookmark base)
$ $TESTDIR/seq.py 0 10 > FILE
$ hg commit -m "prefix FILE with 0"
$ hg book -r . "base_1"
Rebase on top of the new driver, with the old driver checked out.
- We expect to see "generators version = BASE" as we run preprocess() with the old driver.
- Then, after restarting and using on-disk merge (and thus, checking out dest, which has the new driver),
we expect to see "generators version = NEW".
- If mergedriver isn't invalidated correctly, it'll say "generators version = BASE".
$ hg rebase -d new_driver
rebasing in-memory!
rebasing 83615e50cada "prefix FILE with 0" (base_1)
generators version = BASE
base's someFunction() called
artifact rebuild required (in FILE); switching to on-disk merge
rebasing 83615e50cada "prefix FILE with 0" (base_1)
generators version = NEW
new_required_arg = new_required
note: rebase of 83615e50cada created no changes to commit