tests/test-phabricator.t

wireprotov2: send linknodes to emitfilerevisions()

Previously, linknodes were calculated within emitfilerevisions() by
using filectx.introrev(), which would always use the linkrev/linknode
as recorded by storage. This is wrong for cases where the receiver
doesn't have the changeset the linknode refers to.

This commit changes the logic for linknode emission so the mapping
of filenode to linknode is computed by the caller and passed into
emitfilerevisions().

As part of the change, linknodes for "filesdata" in the
haveparents=False case are now correct: the existing code performed a
manifest walk and it was trivial to plug in the correct linknode.

However, behavior for the haveparents=True case is still wrong
because it relies on filtering linkrevs against the outgoing set in
order to determine what to send. This will be fixed in a subsequent
commit.

The change test test-wireproto-exchangev2-shallow.t is a bit wonky.
The test repo has 6 revisions. The changed test is performing a shallow
clone with depth=1. So, only file data for revision 5 is present
locally. So, the new behavior of associating the linknode with
revision 5 for every file revision seems correct. Of course, when
backfilling old revisions, we'll want to update the linknode. But
this problem requires wire protocol support and we'll cross that
bridge later.

Differential Revision: https://phab.mercurial-scm.org/D5405

#require vcr
  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > phabricator = 
  > EOF
  $ hg init repo
  $ cd repo
  $ cat >> .hg/hgrc <<EOF
  > [phabricator]
  > url = https://phab.mercurial-scm.org/
  > callsign = HG
  > 
  > [auth]
  > hgphab.schemes = https
  > hgphab.prefix = phab.mercurial-scm.org
  > # When working on the extension and making phabricator interaction
  > # changes, edit this to be a real phabricator token. When done, edit
  > # it back, and make sure to also edit your VCR transcripts to match
  > # whatever value you put here.
  > hgphab.phabtoken = cli-hahayouwish
  > EOF
  $ VCR="$TESTDIR/phabricator"

Error is handled reasonably. We override the phabtoken here so that
when you're developing changes to phabricator.py you can edit the
above config and have a real token in the test but not have to edit
this test.
  $ hg phabread --config auth.hgphab.phabtoken=cli-notavalidtoken \
  >  --test-vcr "$VCR/phabread-conduit-error.json" D4480 | head
  abort: Conduit Error (ERR-INVALID-AUTH): API token "cli-notavalidtoken" has the wrong length. API tokens should be 32 characters long.

Basic phabread:
  $ hg phabread --test-vcr "$VCR/phabread-4480.json" D4480 | head
  # HG changeset patch
  exchangev2: start to implement pull with wire protocol v2
  
  Wire protocol version 2 will take a substantially different
  approach to exchange than version 1 (at least as far as pulling
  is concerned).
  
  This commit establishes a new exchangev2 module for holding
  code related to exchange using wire protocol v2. I could have
  added things to the existing exchange module. But it is already

phabupdate with an accept:
  $ hg phabupdate --accept D4564 \
  > -m 'I think I like where this is headed. Will read rest of series later.'\
  >  --test-vcr "$VCR/accept-4564.json"

Create a differential diff:
  $ echo alpha > alpha
  $ hg ci --addremove -m 'create alpha for phabricator test'
  adding alpha
  $ hg phabsend -r . --test-vcr "$VCR/phabsend-create-alpha.json"
  D4596 - created - 5206a4fa1e6c: create alpha for phabricator test
  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/5206a4fa1e6c-dec9e777-phabsend.hg
  $ echo more >> alpha
  $ HGEDITOR=true hg ci --amend
  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d8f232f7d799-c573510a-amend.hg
  $ echo beta > beta
  $ hg ci --addremove -m 'create beta for phabricator test'
  adding beta
  $ hg phabsend -r ".^::" --test-vcr "$VCR/phabsend-update-alpha-create-beta.json"
  D4596 - updated - f70265671c65: create alpha for phabricator test
  D4597 - created - 1a5640df7bbf: create beta for phabricator test
  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/1a5640df7bbf-6daf3e6e-phabsend.hg

Template keywords
  $ hg log -T'{rev} {phabreview|json}\n'
  1 {"id": "D4597", "url": "https://phab.mercurial-scm.org/D4597"}
  0 {"id": "D4596", "url": "https://phab.mercurial-scm.org/D4596"}

  $ hg log -T'{rev} {phabreview.url} {phabreview.id}\n'
  1 https://phab.mercurial-scm.org/D4597 D4597
  0 https://phab.mercurial-scm.org/D4596 D4596

  $ cd ..