new file mode 100755
--- /dev/null
+++ b/tests/test-cat
@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+mkdir t
+cd t
+hg init
+echo 0 > a
+echo 0 > b
+hg ci -A -m m -d "0 0"
+hg rm a
+hg cat a
+sleep 1 # make sure mtime is changed
+echo 1 > b
+hg ci -m m -d "0 0"
+echo 2 > b
+hg cat -r 0 a
+hg cat -r 0 b
+hg cat -r 1 a
+hg cat -r 1 b