Mercurial > hg
view tests/test-pager-legacy.t @ 41506:3e89736b98ce
py3: conditionalize test-demandimport.py for Python 3
The Python 3 lazy importer uses the LazyLoader that is part of
importlib.
On Python 3 and later, LazyLoader is implemented using a custom module
type that defines a __getattribute__ which triggers module loading.
Furthermore, there are additional differences as well. For example,
it appears that Python 3 will return an existing sys.modules
entry instead of constructing a new module object.
This commit adds additional test coverage for lazy importing
behavior to cover the differences between Python 2 and 3. This
reveals that the test and some lazy import functionality is kinda
busted. For example, the test assumes "contextlib" will be lazy.
But in reality an import before it has already imported contextlib!
There's definitely room to improve the behavior of the demand
importer code, both for Python 2 and 3. But at least the test
passes on Python 3 now.
Differential Revision: https://phab.mercurial-scm.org/D5796
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Fri, 01 Feb 2019 16:47:29 -0800 |
parents | ef6cab7930b3 |
children |
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$ cat >> fakepager.py <<EOF > import sys > for line in sys.stdin: > sys.stdout.write('paged! %r\n' % line) > EOF Enable ui.formatted because pager won't fire without it, and set up pager and tell it to use our fake pager that lets us see when the pager was running. $ cat >> $HGRCPATH <<EOF > [ui] > formatted = yes > color = no > [extensions] > pager= > [pager] > pager = "$PYTHON" $TESTTMP/fakepager.py > EOF $ hg init repo $ cd repo $ echo a >> a $ hg add a $ hg ci -m 'add a' $ for x in `"$PYTHON" $TESTDIR/seq.py 1 10`; do > echo a $x >> a > hg ci -m "modify a $x" > done By default diff and log are paged, but summary is not: $ hg diff -c 2 --pager=yes paged! 'diff -r f4be7687d414 -r bce265549556 a\n' paged! '--- a/a\tThu Jan 01 00:00:00 1970 +0000\n' paged! '+++ b/a\tThu Jan 01 00:00:00 1970 +0000\n' paged! '@@ -1,2 +1,3 @@\n' paged! ' a\n' paged! ' a 1\n' paged! '+a 2\n' $ hg log --limit 2 paged! 'changeset: 10:46106edeeb38\n' paged! 'tag: tip\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 10\n' paged! '\n' paged! 'changeset: 9:6dd8ea7dd621\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 9\n' paged! '\n' $ hg summary parent: 10:46106edeeb38 tip modify a 10 branch: default commit: (clean) update: (current) phases: 11 draft We can enable the pager on summary: $ hg --config pager.attend-summary=yes summary paged! 'parent: 10:46106edeeb38 tip\n' paged! ' modify a 10\n' paged! 'branch: default\n' paged! 'commit: (clean)\n' paged! 'update: (current)\n' paged! 'phases: 11 draft\n' $ hg --config pager.attend-diff=no diff -c 2 diff -r f4be7687d414 -r bce265549556 a --- a/a Thu Jan 01 00:00:00 1970 +0000 +++ b/a Thu Jan 01 00:00:00 1970 +0000 @@ -1,2 +1,3 @@ a a 1 +a 2 If we completely change the attend list that's respected: $ hg --config pager.attend=summary diff -c 2 diff -r f4be7687d414 -r bce265549556 a --- a/a Thu Jan 01 00:00:00 1970 +0000 +++ b/a Thu Jan 01 00:00:00 1970 +0000 @@ -1,2 +1,3 @@ a a 1 +a 2 If 'log' is in attend, then 'history' should also be paged: $ hg history --limit 2 --config pager.attend=log paged! 'changeset: 10:46106edeeb38\n' paged! 'tag: tip\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 10\n' paged! '\n' paged! 'changeset: 9:6dd8ea7dd621\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 9\n' paged! '\n' Possible bug: history is explicitly ignored in pager config, but because log is in the attend list it still gets pager treatment. $ hg history --limit 2 --config pager.attend=log \ > --config pager.ignore=history paged! 'changeset: 10:46106edeeb38\n' paged! 'tag: tip\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 10\n' paged! '\n' paged! 'changeset: 9:6dd8ea7dd621\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 9\n' paged! '\n' Possible bug: history is explicitly marked as attend-history=no, but it doesn't fail to get paged because log is still in the attend list. $ hg history --limit 2 --config pager.attend-history=no paged! 'changeset: 10:46106edeeb38\n' paged! 'tag: tip\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 10\n' paged! '\n' paged! 'changeset: 9:6dd8ea7dd621\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 9\n' paged! '\n' Possible bug: disabling pager for log but enabling it for history doesn't result in history being paged. $ hg history --limit 2 --config pager.attend-log=no \ > --config pager.attend-history=yes changeset: 10:46106edeeb38 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: modify a 10 changeset: 9:6dd8ea7dd621 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: modify a 9 Pager should not start if stdout is not a tty. $ hg log -l1 -q --config ui.formatted=False 10:46106edeeb38 Pager with color enabled allows colors to come through by default, even though stdout is no longer a tty. $ cat >> $HGRCPATH <<EOF > [ui] > color = always > [color] > mode = ansi > EOF $ hg log --limit 3 paged! '\x1b[0;33mchangeset: 10:46106edeeb38\x1b[0m\n' paged! 'tag: tip\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 10\n' paged! '\n' paged! '\x1b[0;33mchangeset: 9:6dd8ea7dd621\x1b[0m\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 9\n' paged! '\n' paged! '\x1b[0;33mchangeset: 8:cff05a6312fe\x1b[0m\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'summary: modify a 8\n' paged! '\n' Pager works with shell aliases. $ cat >> $HGRCPATH <<EOF > [alias] > echoa = !echo a > EOF $ hg echoa a $ hg --config pager.attend-echoa=yes echoa paged! 'a\n' Pager attributes should be copied to mq repo. Otherwise pager would be started twice and color mode would be lost. $ cat >> $HGRCPATH <<EOF > [extensions] > mq = > EOF $ hg init --mq $ hg qnew foo.patch $ hg qpop popping foo.patch patch queue now empty $ hg ci --mq -m 'commit patches' $ hg log --mq --debug starting pager for command 'extension-via-attend-log' paged! '\x1b[0;33mchangeset: 0:6cc2ded15503e368aaf76b6cc3d12f320c9e3b87\x1b[0m\n' paged! 'tag: tip\n' paged! 'phase: draft\n' paged! 'parent: -1:0000000000000000000000000000000000000000\n' paged! 'parent: -1:0000000000000000000000000000000000000000\n' paged! 'manifest: 0:4980de1ae1b612014d5bcfa9507da84ce8891daa\n' paged! 'user: test\n' paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' paged! 'files+: .hgignore foo.patch series\n' paged! 'extra: branch=default\n' paged! 'description:\n' paged! 'commit patches\n' paged! '\n' paged! '\n' Pager works with hg aliases including environment variables. $ cat >> $HGRCPATH <<'EOF' > [alias] > printa = log -T "$A\n" -r 0 > EOF $ A=1 hg --config pager.attend-printa=yes printa paged! '1\n' $ A=2 hg --config pager.attend-printa=yes printa paged! '2\n' Something that's explicitly attended is still not paginated if the pager is globally set to off using a flag: $ A=2 hg --config pager.attend-printa=yes printa --pager=no 2 Pager should not override the exit code of other commands $ cat >> $TESTTMP/fortytwo.py <<'EOF' > from mercurial import commands, registrar > cmdtable = {} > command = registrar.command(cmdtable) > @command(b'fortytwo', [], b'fortytwo', norepo=True) > def fortytwo(ui, *opts): > ui.write(b'42\n') > return 42 > EOF $ cat >> $HGRCPATH <<'EOF' > [extensions] > fortytwo = $TESTTMP/fortytwo.py > EOF $ hg fortytwo --pager=on paged! '42\n' [42]