[PATCH] test: make version based test-extensions failure more explanatory

[Augie Fackler]

On Tue, Mar 10, 2015 at 11:06:50AM -0700, Pierre-Yves David wrote:
> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at fb.com>
> # Date 1426010470 25200
> #      Tue Mar 10 11:01:10 2015 -0700
> # Node ID 280d9815eb3c4e3020a8381ec6e88b75ecf2222e
> # Parent  a97113b5bce09234a615ef88ef3b2b9aa5f9b5a1
> test: make version based test-extensions failure more explanatory

This was pushed as 31e9f66863f3.

>
> A buggy __version__ content (usually from setup.py's hg being unable to read the
> repo) can make this test fails in an obscure manner. We make the root of the
> failure more explicit.
>
> diff --git a/tests/test-extension.t b/tests/test-extension.t
> --- a/tests/test-extension.t
> +++ b/tests/test-extension.t
> @@ -944,10 +944,13 @@ Older extension is tested with current v
>    ** Extensions loaded: throw, older
>
>  Declare the version as supporting this hg version, show regular bts link:
>    $ hgver=`$PYTHON -c 'from mercurial import util; print util.version().split("+")[0]'`
>    $ echo 'testedwith = """'"$hgver"'"""' >> throw.py
> +  $ if [ -z "$hgver" ]; then
> +  >   echo "unable to fetch a mercurial version. Make sure __version__ is correct";
> +  > fi
>    $ rm -f throw.pyc throw.pyo
>    $ hg --config extensions.throw=throw.py throw 2>&1 | egrep '^\*\*'
>    ** unknown exception encountered, please report by visiting
>    ** http://mercurial.selenic.com/wiki/BugTracker
>    ** Python * (glob)
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