tests: synchronize the git and Mercurial username

The problem with the default name of "test" set by the test runner is the
stringutil methods are unable to split out separate user and email addresses
that git wants.  This means the username is recorded in git as "test <test>".
Amending a commit with that user ends up trying to use "<test>" as the person
field for the new commit, and the git library complains about the angle
brackets.  We should probably abort with a clearer message any time this bad
form is used with the git extension.

One of the commit dates is tweaked to recreate the ambiguous hash prefix from
before.

Differential Revision: https://phab.mercurial-scm.org/D10531

tests/test-git-interop.t

@@ -7,6 +7,7 b' Setup:'
   > GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"; export GIT_COMMITTER_NAME
   > GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"; export GIT_COMMITTER_EMAIL
   > GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"; export GIT_COMMITTER_DATE
+  > HGUSER="test <[e-mail]>"; export HGUSER
   > count=10
   > gitcommit() {
   >    GIT_AUTHOR_DATE="2007-01-01 00:00:$count +0000";
@@ -196,7 +197,7 b' clean up untracked file'
 hg log FILE
 
   $ echo a >> alpha
-  $ hg ci -m 'more alpha' --traceback --date '1583522787 18000'
+  $ hg ci -m 'more alpha' --traceback --date '1583558723 18000'
   $ echo b >> beta
   $ hg ci -m 'more beta'
   heads mismatch, rebuilding dagcache
@@ -205,16 +206,16 b' hg log FILE'
   heads mismatch, rebuilding dagcache
   $ hg log -G alpha
   heads mismatch, rebuilding dagcache
-  @  changeset:   4:6626247b7dc8
+  @  changeset:   4:cf6ddf5d9b8a
   :  bookmark:    master
   :  tag:         tip
-  :  user:        test <test>
+  :  user:        test <[e-mail]>
   :  date:        Thu Jan 01 00:00:00 1970 +0000
   :  summary:     even more alpha
   :
-  o  changeset:   2:a1983dd7fb19
-  :  user:        test <test>
-  :  date:        Fri Mar 06 14:26:27 2020 -0500
+  o  changeset:   2:5b2c80b027ce
+  :  user:        test <[e-mail]>
+  :  date:        Sat Mar 07 00:25:23 2020 -0500
   :  summary:     more alpha
   :
   o  changeset:   0:c5864c9d16fb
@@ -223,8 +224,8 b' hg log FILE'
      summary:     Add alpha
   
   $ hg log -G beta
-  o  changeset:   3:d8ee22687733
-  :  user:        test <test>
+  o  changeset:   3:980d4f79a9c6
+  :  user:        test <[e-mail]>
   :  date:        Thu Jan 01 00:00:00 1970 +0000
   :  summary:     more beta
   :
@@ -235,7 +236,7 b' hg log FILE'
   
 
   $ hg log -r "children(3d9be8deba43)" -T"{node|short} {children}\n"
-  a1983dd7fb19 3:d8ee22687733
+  5b2c80b027ce 3:980d4f79a9c6
 
 hg annotate
 
@@ -279,23 +280,25 b' hg and git status both clean'
 node|shortest works correctly
   $ hg log -T '{node}\n' | sort
   3d9be8deba43482be2c81a4cb4be1f10d85fa8bc
-  6626247b7dc8f231b183b8a4761c89139baca2ad
-  a1983dd7fb19cbd83ad5a1c2fc8bf3d775dea12f
-  ae1ab744f95bfd5b07cf573baef98a778058537b
+  5b2c80b027ce4250f88957326c199a2dc48dad60
+  980d4f79a9c617d60d0fe1fb383753c4a61bea8e
+  c1a41c49866ecc9c5411be932653e5b430961dd5
   c5864c9d16fb3431fe2c175ff84dc6accdbb2c18
-  d8ee22687733a1991813560b15128cd9734f4b48
-  $ hg log -r ae1ab744f95bfd5b07cf573baef98a778058537b --template "{shortest(node,1)}\n"
-  ae
+  cf6ddf5d9b8a120bf90020342bcf7a96d0167279
+  $ hg log -r c1a41c49866ecc9c5411be932653e5b430961dd5 --template "{shortest(node,1)}\n"
+  c1
 
 This covers gitlog._partialmatch()
-  $ hg log -r a
-  abort: ambiguous revision identifier: a
+  $ hg log -r c
+  abort: ambiguous revision identifier: c
   [10]
-  $ hg log -r a1
-  changeset:   2:a1983dd7fb19
-  user:        test <test>
-  date:        Fri Mar 06 14:26:27 2020 -0500
-  summary:     more alpha
+  $ hg log -r c1
+  changeset:   5:c1a41c49866e
+  bookmark:    master
+  tag:         tip
+  user:        test <[e-mail]>
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     Introduce file a/mu
   
   $ hg log -r dead
   abort: unknown revision 'dead'
@@ -355,14 +358,14 b' Contents of each commit should be the sa'
 
   $ hg ex -r .
   # HG changeset patch
-  # User test <test>
+  # User test <[e-mail]>
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID 80adc61cf57e99f6a412d83fee6239d1556cefcf
-  # Parent  ae1ab744f95bfd5b07cf573baef98a778058537b
+  # Node ID 6024eda7986da123aa6797dd4603bd399d49bf5c
+  # Parent  c1a41c49866ecc9c5411be932653e5b430961dd5
   test interactive commit
   
-  diff -r ae1ab744f95b -r 80adc61cf57e alpha
+  diff -r c1a41c49866e -r 6024eda7986d alpha
   --- a/alpha	Thu Jan 01 00:00:00 1970 +0000
   +++ b/alpha	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,3 +1,4 @@
@@ -371,8 +374,8 b' Contents of each commit should be the sa'
    a
   +bar
   $ git show
-  commit 80adc61cf57e99f6a412d83fee6239d1556cefcf
-  Author: test <test>
+  commit 6024eda7986da123aa6797dd4603bd399d49bf5c
+  Author: test <[e-mail]>
   Date:   Thu Jan 1 00:00:00 1970 +0000
   
       test interactive commit
@@ -396,28 +399,26 b' Deleting files should also work (this wa'
 This covers changelog.tiprev() (issue6510)
   $ hg log -r '(.^^):'
   heads mismatch, rebuilding dagcache
-  changeset:   5:ae1ab744f95b
-  user:        test <test>
+  changeset:   5:c1a41c49866e
+  user:        test <[e-mail]>
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     Introduce file a/mu
   
-  changeset:   6:80adc61cf57e
-  user:        test <test>
+  changeset:   6:6024eda7986d
+  user:        test <[e-mail]>
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     test interactive commit
   
-  changeset:   7:116aee5ecdff
+  changeset:   7:1a0fee76bfc4
   bookmark:    master
   tag:         tip
-  user:        test <test>
+  user:        test <[e-mail]>
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     remove beta
   
 This covers changelog.headrevs() with a non-None arg
-
-TODO: Fix the user name.  The stray > char also break `hg ci --amend`.
   $ hg log -r 'heads(.)' -Tcompact
-  7[tip][master]   116aee5ecdff   1970-01-01 00:00 +0000   test>
+  7[tip][master]   1a0fee76bfc4   1970-01-01 00:00 +0000   test
     remove beta