diff -r 7283719e2bfd -r 35b516f800e0 tests/test-http-protocol.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-http-protocol.t	Sat Dec 24 15:21:46 2016 -0700
@@ -0,0 +1,44 @@
+  $ cat >> $HGRCPATH << EOF
+  > [web]
+  > push_ssl = false
+  > allow_push = *
+  > EOF
+
+  $ hg init server
+  $ cd server
+  $ touch a
+  $ hg -q commit -A -m initial
+  $ cd ..
+
+  $ hg -R server serve -p $HGPORT -d --pid-file hg.pid
+  $ cat hg.pid >> $DAEMON_PIDS
+
+compression formats are advertised in compression capability
+
+#if zstd
+  $ get-with-headers.py 127.0.0.1:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep compression
+  compression=zstd,zlib
+#else
+  $ get-with-headers.py 127.0.0.1:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep compression
+  compression=ZL
+#endif
+
+  $ killdaemons.py
+
+server.compressionengines can replace engines list wholesale
+
+  $ hg --config server.compressionengines=none -R server serve -p $HGPORT -d --pid-file hg.pid
+  $ cat hg.pid > $DAEMON_PIDS
+  $ get-with-headers.py 127.0.0.1:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep compression
+  compression=none
+
+  $ killdaemons.py
+
+Order of engines can also change
+
+  $ hg --config server.compressionengines=none,zlib -R server serve -p $HGPORT -d --pid-file hg.pid
+  $ cat hg.pid > $DAEMON_PIDS
+  $ get-with-headers.py 127.0.0.1:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep compression
+  compression=none,zlib
+
+  $ killdaemons.py