new file mode 100644
--- /dev/null
+++ b/tests/test-mq-caches.out
@@ -0,0 +1,53 @@
+# mq patch on an empty repo
+tip: 0
+No .hg/branches.cache
+tip: 0
+No .hg/branches.cache
+
+# some regular revisions
+Patch queue now empty
+tip: 1
+3f910abad313ff802d3a23a7529433872df9b3ae 1
+3f910abad313ff802d3a23a7529433872df9b3ae bar
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff foo
+
+# add some mq patches
+applying p1
+Now at: p1
+tip: 2
+3f910abad313ff802d3a23a7529433872df9b3ae 1
+3f910abad313ff802d3a23a7529433872df9b3ae bar
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff foo
+tip: 3
+3f910abad313ff802d3a23a7529433872df9b3ae 1
+3f910abad313ff802d3a23a7529433872df9b3ae bar
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff foo
+branch foo: 3
+branch bar: 2
+
+# removing the cache
+tip: 3
+3f910abad313ff802d3a23a7529433872df9b3ae 1
+3f910abad313ff802d3a23a7529433872df9b3ae bar
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff foo
+branch foo: 3
+branch bar: 2
+
+# importing rev 1 (the cache now ends in one of the patches)
+tip: 3
+3f910abad313ff802d3a23a7529433872df9b3ae 1
+3f910abad313ff802d3a23a7529433872df9b3ae bar
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff foo
+branch foo: 3
+branch bar: 2
+qbase: 1
+
+# detect an invalid cache
+Patch queue now empty
+applying p0
+applying p1
+applying p2
+Now at: p2
+tip: 3
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff 0
+9539f35bdc80732cc9a3f84e46508f1ed1ec8cff foo