tests: add test for Python 3 compatibility
Python 3 is inevitable. There have been incremental movements towards
converting the code base to be Python 3 compatible. Unfortunately, we
don't have any tests that look for Python 3 compatibility. This patch
changes that.
We introduce a check-py3-compat.py script whose role is to verify
Python 3 compatibility of the files passed in. We add a test that
calls this script with all .py files from the source checkout.
The script currently only verifies that absolute_import and
print_function are used. These are the low hanging fruits for Python
compatbility. Over time, we can include more checks, including
verifying we're able to load each Python file with Python 3. You
have to start somewhere.
Accepting this patch means that all new .py files must have
absolute_import and print_function (if "print" is used) to avoid
a new warning about Python 3 incompatibility. We've already
converted several files to use absolute_import and print_function
is in the same boat, so I don't think this is such a radical
proposition.
$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
>
> [phases]
> publish=False
>
> [alias]
> tglog = log -G --template "{rev}: '{desc}' {branches}\n"
> EOF
$ hg init a
$ cd a
$ hg unbundle "$TESTDIR/bundles/rebase.hg"
adding changesets
adding manifests
adding file changes
added 8 changesets with 7 changes to 7 files (+2 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg up tip
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd ..
$ hg clone -q -u . a a1
$ cd a1
$ hg update 3
3 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg branch dev-one
marked working directory as branch dev-one
(branches are permanent and global, did you want a bookmark?)
$ hg ci -m 'dev-one named branch'
$ hg update 7
2 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg branch dev-two
marked working directory as branch dev-two
$ echo x > x
$ hg add x
$ hg ci -m 'dev-two named branch'
$ hg tglog
@ 9: 'dev-two named branch' dev-two
|
| o 8: 'dev-one named branch' dev-one
| |
o | 7: 'H'
| |
+---o 6: 'G'
| | |
o | | 5: 'F'
| | |
+---o 4: 'E'
| |
| o 3: 'D'
| |
| o 2: 'C'
| |
| o 1: 'B'
|/
o 0: 'A'
Branch name containing a dash (issue3181)
$ hg rebase -b dev-two -d dev-one --keepbranches
rebasing 5:24b6387c8c8c "F"
rebasing 6:eea13746799a "G"
rebasing 7:02de42196ebe "H"
rebasing 9:cb039b7cae8e "dev-two named branch" (tip)
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/24b6387c8c8c-24cb8001-backup.hg (glob)
$ hg tglog
@ 9: 'dev-two named branch' dev-two
|
o 8: 'H'
|
| o 7: 'G'
|/|
o | 6: 'F'
| |
o | 5: 'dev-one named branch' dev-one
| |
| o 4: 'E'
| |
o | 3: 'D'
| |
o | 2: 'C'
| |
o | 1: 'B'
|/
o 0: 'A'
$ hg rebase -s dev-one -d 0 --keepbranches
rebasing 5:643fc9128048 "dev-one named branch"
rebasing 6:24de4aff8e28 "F"
rebasing 7:4b988a958030 "G"
rebasing 8:31d0e4ba75e6 "H"
rebasing 9:9e70cd31750f "dev-two named branch" (tip)
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/643fc9128048-c4ee9ef5-backup.hg (glob)
$ hg tglog
@ 9: 'dev-two named branch' dev-two
|
o 8: 'H'
|
| o 7: 'G'
|/|
o | 6: 'F'
| |
o | 5: 'dev-one named branch' dev-one
| |
| o 4: 'E'
|/
| o 3: 'D'
| |
| o 2: 'C'
| |
| o 1: 'B'
|/
o 0: 'A'
$ hg update 3
3 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg branch -f dev-one
marked working directory as branch dev-one
$ hg ci -m 'dev-one named branch'
created new head
$ hg tglog
@ 10: 'dev-one named branch' dev-one
|
| o 9: 'dev-two named branch' dev-two
| |
| o 8: 'H'
| |
| | o 7: 'G'
| |/|
| o | 6: 'F'
| | |
| o | 5: 'dev-one named branch' dev-one
| | |
| | o 4: 'E'
| |/
o | 3: 'D'
| |
o | 2: 'C'
| |
o | 1: 'B'
|/
o 0: 'A'
$ hg rebase -b 'max(branch("dev-two"))' -d dev-one --keepbranches
rebasing 5:bc8139ee757c "dev-one named branch"
note: rebase of 5:bc8139ee757c created no changes to commit
rebasing 6:42aa3cf0fa7a "F"
rebasing 7:1a1e6f72ec38 "G"
rebasing 8:904590360559 "H"
rebasing 9:59c2e59309fe "dev-two named branch"
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/bc8139ee757c-f11c1080-backup.hg (glob)
$ hg tglog
o 9: 'dev-two named branch' dev-two
|
o 8: 'H'
|
| o 7: 'G'
|/|
o | 6: 'F'
| |
@ | 5: 'dev-one named branch' dev-one
| |
| o 4: 'E'
| |
o | 3: 'D'
| |
o | 2: 'C'
| |
o | 1: 'B'
|/
o 0: 'A'
$ hg rebase -s 'max(branch("dev-one"))' -d 0 --keepbranches
rebasing 5:643fc9128048 "dev-one named branch"
rebasing 6:679f28760620 "F"
rebasing 7:549f007a9f5f "G"
rebasing 8:12b2bc666e20 "H"
rebasing 9:71325f8bc082 "dev-two named branch" (tip)
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/643fc9128048-6cdd1a52-backup.hg (glob)
$ hg tglog
o 9: 'dev-two named branch' dev-two
|
o 8: 'H'
|
| o 7: 'G'
|/|
o | 6: 'F'
| |
@ | 5: 'dev-one named branch' dev-one
| |
| o 4: 'E'
|/
| o 3: 'D'
| |
| o 2: 'C'
| |
| o 1: 'B'
|/
o 0: 'A'
$ hg up -r 0 > /dev/null
Rebasing descendant onto ancestor across different named branches
$ hg rebase -s 1 -d 9 --keepbranches
rebasing 1:42ccdea3bb16 "B"
rebasing 2:5fddd98957c8 "C"
rebasing 3:32af7686d403 "D"
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-backup.hg (glob)
$ hg tglog
o 9: 'D'
|
o 8: 'C'
|
o 7: 'B'
|
o 6: 'dev-two named branch' dev-two
|
o 5: 'H'
|
| o 4: 'G'
|/|
o | 3: 'F'
| |
o | 2: 'dev-one named branch' dev-one
| |
| o 1: 'E'
|/
@ 0: 'A'
$ hg rebase -s 5 -d 6
abort: source is ancestor of destination
[255]
$ hg rebase -s 6 -d 5
rebasing 6:3944801ae4ea "dev-two named branch"
rebasing 7:3bdb949809d9 "B"
rebasing 8:a0d543090fa4 "C"
rebasing 9:e9f862ce8bad "D" (tip)
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/3944801ae4ea-fb46ed74-backup.hg (glob)
$ hg tglog
o 9: 'D'
|
o 8: 'C'
|
o 7: 'B'
|
o 6: 'dev-two named branch'
|
o 5: 'H'
|
| o 4: 'G'
|/|
o | 3: 'F'
| |
o | 2: 'dev-one named branch' dev-one
| |
| o 1: 'E'
|/
@ 0: 'A'
Reopen branch by rebase
$ hg up -qr3
$ hg branch -q b
$ hg ci -m 'create b'
$ hg ci -m 'close b' --close
$ hg rebase -b 8 -d b
reopening closed branch head 2b586e70108d
rebasing 5:8e279d293175 "H"
rebasing 6:c57724c84928 "dev-two named branch"
rebasing 7:160b0930ccc6 "B"
rebasing 8:810110211f50 "C"
rebasing 9:e522577ccdbd "D"
saved backup bundle to $TESTTMP/a1/.hg/strip-backup/8e279d293175-b023e27c-backup.hg (glob)
$ cd ..
Rebase to other head on branch
Set up a case:
$ hg init case1
$ cd case1
$ touch f
$ hg ci -qAm0
$ hg branch -q b
$ echo >> f
$ hg ci -qAm 'b1'
$ hg up -qr -2
$ hg branch -qf b
$ hg ci -qm 'b2'
$ hg up -qr -3
$ hg branch -q c
$ hg ci -m 'c1'
$ hg tglog
@ 3: 'c1' c
|
| o 2: 'b2' b
|/
| o 1: 'b1' b
|/
o 0: '0'
$ hg clone -q . ../case2
rebase 'b2' to another lower branch head
$ hg up -qr 2
$ hg rebase
nothing to rebase - working directory parent is also destination
[1]
$ hg tglog
o 3: 'c1' c
|
| @ 2: 'b2' b
|/
| o 1: 'b1' b
|/
o 0: '0'
rebase 'b1' on top of the tip of the branch ('b2') - ignoring the tip branch ('c1')
$ cd ../case2
$ hg up -qr 1
$ hg rebase
rebasing 1:40039acb7ca5 "b1"
saved backup bundle to $TESTTMP/case2/.hg/strip-backup/40039acb7ca5-342b72d1-backup.hg (glob)
$ hg tglog
@ 3: 'b1' b
|
| o 2: 'c1' c
| |
o | 1: 'b2' b
|/
o 0: '0'
rebase 'c1' to the branch head 'c2' that is closed
$ hg branch -qf c
$ hg ci -qm 'c2 closed' --close
$ hg up -qr 2
$ hg tglog
_ 4: 'c2 closed' c
|
o 3: 'b1' b
|
| @ 2: 'c1' c
| |
o | 1: 'b2' b
|/
o 0: '0'
$ hg rebase
nothing to rebase - working directory parent is also destination
[1]
$ hg tglog
_ 4: 'c2 closed' c
|
o 3: 'b1' b
|
| @ 2: 'c1' c
| |
o | 1: 'b2' b
|/
o 0: '0'
$ cd ..