--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-remotefilelog-keepset.t	Thu Sep 27 13:03:19 2018 -0400
@@ -0,0 +1,40 @@
+  $ PYTHONPATH=$TESTDIR/..:$PYTHONPATH
+  $ export PYTHONPATH
+
+  $ . "$TESTDIR/remotefilelog-library.sh"
+
+  $ hginit master
+  $ cd master
+  $ cat >> .hg/hgrc <<EOF
+  > [remotefilelog]
+  > server=True
+  > serverexpiration=-1
+  > EOF
+  $ echo x > x
+  $ hg commit -qAm x
+  $ echo y > y
+  $ hg commit -qAm y
+  $ echo z > z
+  $ hg commit -qAm z
+  $ cd ..
+
+  $ hgcloneshallow ssh://user@dummy/master shallow -q
+  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)
+
+# Compute keepset for 0th and 2nd commit, which implies that we do not process
+# the 1st commit, therefore we diff 2nd manifest with the 0th manifest and
+# populate the keepkeys from the diff
+  $ cd shallow
+  $ cat >> .hg/hgrc <<EOF
+  > [remotefilelog]
+  > pullprefetch=0+2
+  > EOF
+  $ hg debugkeepset
+
+# Compute keepset for all commits, which implies that we only process deltas of
+# manifests of commits 1 and 2 and therefore populate the keepkeys from deltas
+  $ cat >> .hg/hgrc <<EOF
+  > [remotefilelog]
+  > pullprefetch=all()
+  > EOF
+  $ hg debugkeepset