diff tests/helpers-testrepo.sh @ 33128:6c113a7dec52

tests: use the system hg for examining the local repository

Most test scripts use "hg" to interact with a temporary test repository.
However a few tests also want to run hg commands to interact with the local
repository containing the mercurial source code.  Notably, many of the
test-check-* tests want to check local files and commit messages.

These tests were previously using the version of hg being tested to query the
source repository.  However, this will fail if the source repository requires
extensions or other settings not supported by the version of mercurial being
tested.  The source repository was typically initially cloned using the system
hg installation, so we should use the system hg installation to query it.

There was already a helpers-testrepo.sh script designed to help cope with
different requirements for the source repository versus the test repositories.
However, it only handled the evolve extension.  This new behavior works with
any extensions that are different between the system installation and the test
installation.

--- a/tests/helpers-testrepo.sh	Tue Jun 27 17:24:31 2017 -0700
+++ b/tests/helpers-testrepo.sh	Tue Jun 27 17:24:31 2017 -0700
@@ -1,19 +1,27 @@
-# The test-repo is a live hg repository which may have evolution
-# markers created, e.g. when a ~/.hgrc enabled evolution.
+# Invoke the system hg installation (rather than the local hg version being
+# tested).
 #
-# Tests are run using a custom HGRCPATH, which do not
-# enable evolution markers by default.
+# We want to use the hg version being tested when interacting with the test
+# repository, and the system hg when interacting with the mercurial source code
+# repository.
 #
-# If test-repo includes evolution markers, and we do not
-# enable evolution markers, hg will occasionally complain
-# when it notices them, which disrupts tests resulting in
-# sporadic failures.
-#
-# Since we aren't performing any write operations on the
-# test-repo, there's no harm in telling hg that we support
-# evolution markers, which is what the following lines
-# for the hgrc file do:
-cat >> $HGRCPATH << EOF
-[experimental]
-evolution=createmarkers
-EOF
+# The mercurial source repository was typically orignally cloned with the
+# system mercurial installation, and may require extensions or settings from
+# the system installation.
+syshg () {
+    (
+        syshgenv
+        exec hg "$@"
+    )
+}
+
+# Revert the environment so that running "hg" runs the system hg
+# rather than the test hg installation.
+syshgenv () {
+    PATH="$ORIG_PATH"
+    PYTHONPATH="$ORIG_PYTHONPATH"
+    JYTHONPATH="$ORIG_JYTHONPATH"
+    unset HGRCPATH
+    HGPLAIN=1
+    export HGPLAIN
+}