tests/test-check-pytype.t
author Arun Kulshreshtha <akulshreshtha@janestreet.com>
Tue, 30 Aug 2022 15:29:55 -0400
changeset 49491 c6a1beba27e9
parent 49019 455dce344c56
permissions -rw-r--r--
bisect: avoid copying ancestor list for non-merge commits During a bisection, hg needs to compute a list of all ancestors for every candidate commit. This is accomplished via a bottom-up traversal of the set of candidates, during which each revision's ancestor list is populated using the ancestor list of its parent(s). Previously, this involved copying the entire list, which could be very long in if the bisection range was large. To help improve this, we can observe that each candidate commit is visited exactly once, at which point its ancestor list is copied into its children's lists and then dropped. In the case of non-merge commits, a commit's ancestor list consists exactly of its parent's list plus itself. This means that we can trivially reuse the parent's existing list for one of its non-merge children, which avoids copying entirely if that commit is the parent's only child. This makes bisections over linear ranges of commits much faster. During some informal testing in the large publicly-available `mozilla-central` repository, this noticeably sped up bisections over large ranges of history: Setup: $ cd mozilla-central $ hg bisect --reset $ hg bisect --good 0 $ hg log -r tip -T '{rev}\n' 628417 Test: $ time hg bisect --bad tip --noupdate Before: real 3m35.927s user 3m35.553s sys 0m0.319s After: real 1m41.142s user 1m40.810s sys 0m0.285s
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#require pytype py3 slow
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  $ cd $RUNTESTDIR/..
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Many of the individual files that are excluded here confuse pytype
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because they do a mix of Python 2 and Python 3 things
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conditionally. There's no good way to help it out with that as far as
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I can tell, so let's just hide those files from it for now. We should
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endeavor to empty this list out over time, as some of these are
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probably hiding real problems.
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mercurial/bundlerepo.py       # no vfs and ui attrs on bundlerepo
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mercurial/context.py          # many [attribute-error]
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mercurial/crecord.py          # tons of [attribute-error], [module-attr]
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mercurial/debugcommands.py    # [wrong-arg-types]
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mercurial/dispatch.py         # initstdio: No attribute ... on TextIO [attribute-error]
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mercurial/exchange.py         # [attribute-error]
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mercurial/hgweb/hgweb_mod.py  # [attribute-error], [name-error], [wrong-arg-types]
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mercurial/hgweb/server.py     # [attribute-error], [name-error], [module-attr]
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mercurial/hgweb/wsgicgi.py    # confused values in os.environ
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mercurial/httppeer.py         # [attribute-error], [wrong-arg-types]
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mercurial/interfaces          # No attribute 'capabilities' on peer [attribute-error]
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mercurial/keepalive.py        # [attribute-error]
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mercurial/localrepo.py        # [attribute-error]
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mercurial/manifest.py         # [unsupported-operands], [wrong-arg-types]
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mercurial/minirst.py          # [unsupported-operands], [attribute-error]
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mercurial/pure/osutil.py      # [invalid-typevar], [not-callable]
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mercurial/pure/parsers.py     # [attribute-error]
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mercurial/repoview.py         # [attribute-error]
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mercurial/testing/storage.py  # tons of [attribute-error]
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mercurial/ui.py               # [attribute-error], [wrong-arg-types]
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mercurial/unionrepo.py        # ui, svfs, unfiltered [attribute-error]
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mercurial/win32.py            # [not-callable]
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mercurial/wireprotoframing.py # [unsupported-operands], [attribute-error], [import-error]
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mercurial/wireprotov1peer.py  # [attribute-error]
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mercurial/wireprotov1server.py  # BUG?: BundleValueError handler accesses subclass's attrs
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TODO: use --no-cache on test server?  Caching the files locally helps during
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development, but may be a hinderance for CI testing.
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  $ pytype -V 3.7 --keep-going --jobs auto mercurial \
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  >    -x mercurial/bundlerepo.py \
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  >    -x mercurial/dispatch.py \
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  >    -x mercurial/exchange.py \
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  >    -x mercurial/hgweb/hgweb_mod.py \
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  >    -x mercurial/hgweb/server.py \
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  >    -x mercurial/httppeer.py \
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  >    -x mercurial/interfaces \
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  >    -x mercurial/keepalive.py \
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  >    -x mercurial/localrepo.py \
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  >    -x mercurial/thirdparty \
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  >  > $TESTTMP/pytype-output.txt || cat $TESTTMP/pytype-output.txt
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Only show the results on a failure, because the output on success is also
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voluminous and variable.