--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-diffdir.t Tue Aug 17 17:57:48 2010 +0530
@@ -0,0 +1,40 @@
+ $ hg init
+ $ touch a
+ $ hg add a
+ $ hg ci -m "a" -d "1000000 0"
+
+ $ echo 123 > b
+ $ hg add b
+ $ hg diff --nodates
+ diff -r acd8075edac9 b
+ --- /dev/null
+ +++ b/b
+ @@ -0,0 +1,1 @@
+ +123
+
+ $ hg diff --nodates -r tip
+ diff -r acd8075edac9 b
+ --- /dev/null
+ +++ b/b
+ @@ -0,0 +1,1 @@
+ +123
+
+ $ echo foo > a
+ $ hg diff --nodates
+ diff -r acd8075edac9 a
+ --- a/a
+ +++ b/a
+ @@ -0,0 +1,1 @@
+ +foo
+ diff -r acd8075edac9 b
+ --- /dev/null
+ +++ b/b
+ @@ -0,0 +1,1 @@
+ +123
+
+ $ hg diff -r ""
+ abort: 00changelog.i@: ambiguous identifier!
+ $ hg diff -r tip -r ""
+ abort: 00changelog.i@: ambiguous identifier!
+
+ $ true