--- a/tests/test-git-export
+++ b/tests/test-git-export
@@ -78,6 +78,8 @@ hg mv dst2 dst3
 hg ci -m 'mv dst2 dst3; revert start' -d '0 0'
 
 hg diff --git -r 9:11
+echo '%  reversed'
+hg diff --git -r 11:9
 
 echo a >> foo
 hg add foo
@@ -92,12 +94,18 @@ hg ci -m 'change bar'
 echo
 echo '% file created before r1 and renamed before r2'
 hg diff --git -r -3:-1
+echo '%  reversed'
+hg diff --git -r -1:-3
 echo
 echo '% file created in r1 and renamed before r2'
 hg diff --git -r -4:-1
+echo '%  reversed'
+hg diff --git -r -1:-4
 echo
 echo '% file created after r1 and renamed before r2'
 hg diff --git -r -5:-1
+echo '%  reversed'
+hg diff --git -r -1:-5
 
 echo
 echo '% comparing with the working dir'
@@ -139,6 +147,8 @@ hg cp brand-new2 brand-new3
 hg mv brand-new2 brand-new3-2
 hg ci -m 'multiple renames/copies'
 hg diff --git -r -2 -r -1
+echo '%  reversed'
+hg diff --git -r -1 -r -2
 
 echo '% there should be a trailing TAB if there are spaces in the file name'
 echo foo > 'with spaces'