view tests/test-mailmap.t @ 39594:bdb41eaa8b59

snapshot: fix line order when skipping over empty deltas

The code movement in 37957e07138c introduced an error.

Since 8f83a953dddf, we discarded some revisions because they are identical to
their delta base (and use that delta base instead). That logic is good,
however, in 37957e07138c we mixed up the order of two line, adding the "new"
revision to the set of already tested one, instead of the discarded one. So in
practice, we were never investigating any revisions in a chain starting with
an empty delta. Creating significantly worst delta chain (eg: Mercurial's
manifest move goes from about 60MB up to about 80MB).

Create a repo and add some commits

  $ hg init mm
  $ cd mm
  $ echo "Test content" > testfile1
  $ hg add testfile1
  $ hg commit -m "First commit" -u "Proper <commit@m.c>"
  $ echo "Test content 2" > testfile2
  $ hg add testfile2
  $ hg commit -m "Second commit" -u "Commit Name 2 <commit2@m.c>"
  $ echo "Test content 3" > testfile3
  $ hg add testfile3
  $ hg commit -m "Third commit" -u "Commit Name 3 <commit3@m.c>"
  $ echo "Test content 4" > testfile4
  $ hg add testfile4
  $ hg commit -m "Fourth commit" -u "Commit Name 4 <commit4@m.c>"

Add a .mailmap file with each possible entry type plus comments
  $ cat > .mailmap << EOF
  > # Comment shouldn't break anything
  > <proper@m.c> <commit@m.c> # Should update email only
  > Proper Name 2 <commit2@m.c> # Should update name only
  > Proper Name 3 <proper@m.c> <commit3@m.c> # Should update name, email due to email
  > Proper Name 4 <proper@m.c> Commit Name 4 <commit4@m.c> # Should update name, email due to name, email
  > EOF
  $ hg add .mailmap
  $ hg commit -m "Add mailmap file" -u "Testuser <test123@m.c>"

Output of commits should be normal without filter
  $ hg log -T "{author}\n" -r "all()"
  Proper <commit@m.c>
  Commit Name 2 <commit2@m.c>
  Commit Name 3 <commit3@m.c>
  Commit Name 4 <commit4@m.c>
  Testuser <test123@m.c>

Output of commits with filter shows their mailmap values
  $ hg log -T "{mailmap(author)}\n" -r "all()"
  Proper <proper@m.c>
  Proper Name 2 <commit2@m.c>
  Proper Name 3 <proper@m.c>
  Proper Name 4 <proper@m.c>
  Testuser <test123@m.c>

Add new mailmap entry for testuser
  $ cat >> .mailmap << EOF
  > <newmmentry@m.c> <test123@m.c>
  > EOF

Output of commits with filter shows their updated mailmap values
  $ hg log -T "{mailmap(author)}\n" -r "all()"
  Proper <proper@m.c>
  Proper Name 2 <commit2@m.c>
  Proper Name 3 <proper@m.c>
  Proper Name 4 <proper@m.c>
  Testuser <newmmentry@m.c>

A commit with improperly formatted user field should not break the filter
  $ echo "some more test content" > testfile1
  $ hg commit -m "Commit with improper user field" -u "Improper user"
  $ hg log -T "{mailmap(author)}\n" -r "all()"
  Proper <proper@m.c>
  Proper Name 2 <commit2@m.c>
  Proper Name 3 <proper@m.c>
  Proper Name 4 <proper@m.c>
  Testuser <newmmentry@m.c>
  Improper user

No TypeError beacause of invalid input

  $ hg log -T '{mailmap(termwidth)}\n' -r0
  80