--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-evolve-effectflags.t	Fri May 19 18:43:21 2017 +0200
@@ -0,0 +1,39 @@
+Test the 'effect-flags' feature
+
+Global setup
+============
+
+  $ . $TESTDIR/testlib/common.sh
+  $ cat >> $HGRCPATH <<EOF
+  > [ui]
+  > interactive = true
+  > [phases]
+  > publish=False
+  > [extensions]
+  > evolve =
+  > [experimental]
+  > evolution.effect-flags = 1
+  > EOF
+
+  $ hg init $TESTTMP/effect-flags
+  $ cd $TESTTMP/effect-flags
+  $ mkcommit ROOT
+
+Test simple amend touching the description only
+-----------------------------------------------
+
+amend the description only
+
+  $ mkcommit A0
+  $ hg amend -m "A1"
+
+check result
+
+  $ hg debugobsolete
+  471f378eab4c5e25f6c77f785b27c936efb22874 fdf9bde5129a28d4548fadd3f62b265cdd3b7a2e 0 (*) {'ef1': '1', 'user': 'test'} (glob)
+  $ hg obslog .
+  @  fdf9bde5129a (2) A1
+  |
+  x  471f378eab4c (1) A0
+       rewritten by test (*) as fdf9bde5129a (glob)
+