new file mode 100644
--- /dev/null
+++ b/tests/test-parents.out
@@ -0,0 +1,28 @@
+% no working directory
+adding a
+adding b
+% hg parents
+changeset: 2:6cfac479f009
+tag: tip
+user: test
+date: Thu Jan 01 00:00:02 1970 +0000
+summary: b
+
+% hg parents a
+changeset: 0:b6a1406d8886
+user: test
+date: Thu Jan 01 00:00:00 1970 +0000
+summary: ab
+
+% hg parents -r 2
+changeset: 1:d786049f033a
+user: test
+date: Thu Jan 01 00:00:01 1970 +0000
+summary: a
+
+% hg parents -r 2 a
+changeset: 0:b6a1406d8886
+user: test
+date: Thu Jan 01 00:00:00 1970 +0000
+summary: ab
+