# HG changeset patch
# User Jason R. Coombs <jaraco@jaraco.com>
# Date 1684968774 -7200
# Node ID e36883d8810802c979615d0f5f9f4831508f5f33
# Parent  e44d343b9ed23080ede3f1888f41fb09345398f9
evolve: add a test to capture the expected behavior of retaining extras

diff -r e44d343b9ed2 -r e36883d88108 tests/test-check-sdist.t
--- a/tests/test-check-sdist.t	Thu Jun 08 11:07:34 2023 -0400
+++ b/tests/test-check-sdist.t	Thu May 25 00:52:54 2023 +0200
@@ -35,7 +35,7 @@
 
   $ tar -tzf hg-evolve-*.tar.gz | sed 's|^hg-evolve-[^/]*/||' | sort > files
   $ wc -l files
-  361 files
+  363 files
   $ fgrep debian files
   tests/test-check-debian.t
   $ fgrep __init__.py files
diff -r e44d343b9ed2 -r e36883d88108 tests/test-evolve-extras.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-evolve-extras.t	Thu May 25 00:52:54 2023 +0200
@@ -0,0 +1,42 @@
+Testing retained_extras_on_rebase usage in evolve and modifying it in an extension
+
+  $ . $TESTDIR/testlib/common.sh
+
+  $ hg init repo
+  $ cd repo
+  $ cat > .hg/hgrc << EOF
+  > [extensions]
+  > evolve =
+  > EOF
+
+  $ echo apple > a
+  $ hg ci -qAm 'apple'
+  $ echo banana > b
+  $ hg ci -qAm 'banana' --config extensions.commitextras= \
+  > --extra useful=b-for-banana \
+  > --extra useless=banana-peel
+
+amending apple
+
+  $ hg prev
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  [0] apple
+  $ echo apricot > a
+  $ hg amend -m 'apricot'
+  1 new orphan changesets
+
+the commit still has all extras that we added previously
+
+  $ hg log -r 'desc("banana")' -T '{join(extras, " ")}\n'
+  *useful=b-for-banana*useless=banana-peel* (glob)
+
+let's run evolve with our extension
+
+  $ hg --config extensions.retained_extras=${TESTDIR}/testlib/retain-extras-ext.py evolve
+  move:[1] banana
+  atop:[2] apricot
+
+evolving banana retained "useful" and discarded "useless"
+
+  $ hg log -r 'desc("banana")' -T '{join(extras, " ")}\n'
+  *useful=b-for-banana* (glob)
diff -r e44d343b9ed2 -r e36883d88108 tests/testlib/retain-extras-ext.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/testlib/retain-extras-ext.py	Thu May 25 00:52:54 2023 +0200
@@ -0,0 +1,16 @@
+"""
+Wrap 'retained_extras_on_rebase' (from either mercurial or evolve) to retain
+the "useful" extra.
+"""
+
+from mercurial import rewriteutil
+
+try:
+    rewriteutil.retained_extras_on_rebase
+except AttributeError:
+    # install the compatibility layer on older version
+    from hgext3rd.evolve import compat
+    compat.retained_extras_on_rebase # silence linter
+
+def extsetup(ui):
+    rewriteutil.retained_extras_on_rebase.add(b'useful')