--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-rebase-empty-successor.t Mon Jun 01 08:38:42 2020 +0200
@@ -0,0 +1,44 @@
+ $ cat << EOF >> $HGRCPATH
+ > [extensions]
+ > rebase=
+ > [alias]
+ > tglog = log -G -T "{rev} '{desc}'\n"
+ > EOF
+
+ $ hg init
+
+ $ echo a > a; hg add a; hg ci -m a
+ $ echo b > b; hg add b; hg ci -m b1
+ $ hg up 0 -q
+ $ echo b > b; hg add b; hg ci -m b2 -q
+
+ $ hg tglog
+ @ 2 'b2'
+ |
+ | o 1 'b1'
+ |/
+ o 0 'a'
+
+
+With rewrite.empty-successor=skip, b2 is skipped because it would become empty.
+
+ $ hg rebase -s 2 -d 1 --config rewrite.empty-successor=skip --dry-run
+ starting dry-run rebase; repository will not be changed
+ rebasing 2:6e2aad5e0f3c "b2" (tip)
+ note: not rebasing 2:6e2aad5e0f3c "b2" (tip), its destination already has all its changes
+ dry-run rebase completed successfully; run without -n/--dry-run to perform this rebase
+
+With rewrite.empty-successor=keep, b2 will be recreated although it became empty.
+
+ $ hg rebase -s 2 -d 1 --config rewrite.empty-successor=keep
+ rebasing 2:6e2aad5e0f3c "b2" (tip)
+ note: created empty successor for 2:6e2aad5e0f3c "b2" (tip), its destination already has all its changes
+ saved backup bundle to $TESTTMP/.hg/strip-backup/6e2aad5e0f3c-7d7c8801-rebase.hg
+
+ $ hg tglog
+ @ 2 'b2'
+ |
+ o 1 'b1'
+ |
+ o 0 'a'
+