view tests/test-churn.t @ 38486:4c0683655599

namespaces: let namespaces override singlenode() definition

Some namespaces have multiple nodes per name (meaning that their
namemap() returns multiple nodes). One such namespace is the "topics"
namespace (from the evolve repo). We also have our own internal
namespace at Google (for review units) that has multiple nodes per
name. These namespaces may not want to use the default "pick highest
revnum" resolution that we currently use when resolving a name to a
single node. As an example, they may decide that `hg co <name>` should
check out a commit that's last in some sense even if an earlier commit
had just been amended and thus had a higher revnum [1]. This patch
gives the namespace the option to continue to return multiple nodes
and to override how the best node is picked. Allowing namespaces to
override that may also be useful as an optimization (it may be cheaper
for the namespace to find just that node).

I have been arguing (in D3715) for using all the nodes returned from
namemap() when resolving the symbol to a revset, so e.g. `hg log -r
stable` would resolve to *all* nodes on stable, not just the one with
the highest revnum (except that I don't actually think we should
change it for the branch namespace because of BC). Most people seem
opposed to that. If we decide not to do it, I think we can deprecate
the namemap() function in favor of the new singlenode() (I find it
weird to have namespaces, like the branch namespace, where namemap()
isn't nodemap()'s inverse). I therefore think this patch makes sense
regardless of what we decide on that issue.


 [1] Actually, even the branch namespace would have wanted to override
     singlenode() if it had supported multiple nodes. That's because
     closes branch heads are mostly ignored, so "hg co default" will
     not check out the highest-revnum node if that's a closed head.

Differential Revision: https://phab.mercurial-scm.org/D3852

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "churn=" >> $HGRCPATH

create test repository

  $ hg init repo
  $ cd repo
  $ echo a > a
  $ hg ci -Am adda -u user1 -d 6:00
  adding a
  $ echo b >> a
  $ echo b > b
  $ hg ci -m changeba -u user2 -d 9:00 a
  $ hg ci -Am addb -u user2 -d 9:30
  adding b
  $ echo c >> a
  $ echo c >> b
  $ echo c > c
  $ hg ci -m changeca -u user3 -d 12:00 a
  $ hg ci -m changecb -u user3 -d 12:15 b
  $ hg ci -Am addc -u user3 -d 12:30
  adding c
  $ mkdir -p d/e
  $ echo abc > d/e/f1.txt
  $ hg ci -Am "add d/e/f1.txt" -u user1 -d 12:45 d/e/f1.txt
  $ mkdir -p d/g
  $ echo def > d/g/f2.txt
  $ hg ci -Am "add d/g/f2.txt" -u user1 -d 13:00 d/g/f2.txt


churn separate directories

  $ cd d
  $ hg churn e
  user1      1 ***************************************************************

churn all

  $ hg churn
  user1      3 ***************************************************************
  user3      3 ***************************************************************
  user2      2 ******************************************

churn excluding one dir

  $ hg churn -X e
  user3      3 ***************************************************************
  user1      2 ******************************************
  user2      2 ******************************************

churn up to rev 2

  $ hg churn -r :2
  user2      2 ***************************************************************
  user1      1 ********************************
  $ cd ..

churn with aliases

  $ cat > ../aliases <<EOF
  > user1 alias1
  > user3 alias3
  > not-an-alias
  > EOF

churn with .hgchurn

  $ mv ../aliases .hgchurn
  $ hg churn
  skipping malformed alias: not-an-alias
  alias1      3 **************************************************************
  alias3      3 **************************************************************
  user2       2 *****************************************
  $ rm .hgchurn

churn with column specifier

  $ COLUMNS=40 hg churn
  user1      3 ***********************
  user3      3 ***********************
  user2      2 ***************

churn by hour

  $ hg churn -f '%H' -s
  06      1 *****************
  09      2 *********************************
  12      4 ******************************************************************
  13      1 *****************


churn with separated added/removed lines

  $ hg rm d/g/f2.txt
  $ hg ci -Am "removed d/g/f2.txt" -u user1 -d 14:00 d/g/f2.txt
  $ hg churn --diffstat
  user1           +3/-1 +++++++++++++++++++++++++++++++++++++++++--------------
  user3           +3/-0 +++++++++++++++++++++++++++++++++++++++++
  user2           +2/-0 +++++++++++++++++++++++++++

churn --diffstat with color

  $ hg --config extensions.color= churn --config color.mode=ansi \
  >     --diffstat --color=always
  user1           +3/-1 \x1b[0;32m+++++++++++++++++++++++++++++++++++++++++\x1b[0m\x1b[0;31m--------------\x1b[0m (esc)
  user3           +3/-0 \x1b[0;32m+++++++++++++++++++++++++++++++++++++++++\x1b[0m (esc)
  user2           +2/-0 \x1b[0;32m+++++++++++++++++++++++++++\x1b[0m (esc)


changeset number churn

  $ hg churn -c
  user1      4 ***************************************************************
  user3      3 ***********************************************
  user2      2 ********************************

  $ echo 'with space = no-space' >> ../aliases
  $ echo a >> a
  $ hg commit -m a -u 'with space' -d 15:00

churn with space in alias

  $ hg churn --aliases ../aliases -r tip
  no-space      1 ************************************************************

  $ cd ..


Issue833: ZeroDivisionError

  $ hg init issue-833
  $ cd issue-833
  $ touch foo
  $ hg ci -Am foo
  adding foo

this was failing with a ZeroDivisionError

  $ hg churn
  test      0 
  $ cd ..

Ignore trailing or leading spaces in emails

  $ cd repo
  $ touch bar
  $ hg ci -Am'bar' -u 'user4 <[e-mail]>'
  adding bar
  $ touch foo
  $ hg ci -Am'foo' -u 'user4 < [e-mail] >'
  adding foo
  $ hg log -l2 --template '[{author|email}]\n'
  [ [e-mail] ]
  [[e-mail]]
  $ hg churn -c
  user1            4 *********************************************************
  user3            3 *******************************************
  user2            2 *****************************
  [e-mail]      2 *****************************
  with space       1 **************

Test multibyte sequences in names

  $ echo bar >> bar
  $ hg --encoding utf-8 ci -m'changed bar' -u 'El Niño <[e-mail]>'
  $ hg --encoding utf-8 churn -ct '{author|person}'
  user1           4 **********************************************************
  user3           3 ********************************************
  user2           2 *****************************
  user4           2 *****************************
  El Ni\xc3\xb1o         1 *************** (esc)
  with space      1 ***************

Test --template argument, with backwards compatibility

  $ hg churn -t '{author|user}'
  user1      4 ***************************************************************
  user3      3 ***********************************************
  user2      2 ********************************
  nino       1 ****************
  with       1 ****************
             0 
  user4      0 
  $ hg churn -T '{author|user}'
  user1      4 ***************************************************************
  user3      3 ***********************************************
  user2      2 ********************************
  nino       1 ****************
  with       1 ****************
             0 
  user4      0 
  $ hg churn -t 'alltogether'
  alltogether     11 *********************************************************
  $ hg churn -T 'alltogether'
  alltogether     11 *********************************************************

  $ cd ..