diff --git a/tests/test-diff-reverse.out b/tests/test-diff-reverse.out
deleted file mode 100644
--- a/tests/test-diff-reverse.out
+++ /dev/null
@@ -1,20 +0,0 @@
-adding a
-diff -r 2855cdcfcbb7 -r 8e1805a3cf6e a
---- a/a	Thu Jan 01 00:00:00 1970 +0000
-+++ b/a	Thu Jan 01 00:00:00 1970 +0000
-@@ -1,3 +1,3 @@
--d
--e
--f
-+a
-+b
-+c
-diff -r 2855cdcfcbb7 a
---- a/a
-+++ b/a
-@@ -1,5 +1,3 @@
- d
- e
- f
--g
--h
diff --git a/tests/test-diff-reverse b/tests/test-diff-reverse.t
old mode 100755
new mode 100644
rename from tests/test-diff-reverse
rename to tests/test-diff-reverse.t
--- a/tests/test-diff-reverse
+++ b/tests/test-diff-reverse.t
@@ -1,24 +1,44 @@
-#!/bin/sh
+  $ hg init
 
-hg init
-cat > a <<EOF
-a
-b
-c
-EOF
-hg ci -Am adda
+  $ cat > a <<EOF
+  > a
+  > b
+  > c
+  > EOF
+  $ hg ci -Am adda
+  adding a
+
+  $ cat > a <<EOF
+  > d
+  > e
+  > f
+  > EOF
+  $ hg ci -m moda
 
-cat > a <<EOF
-d
-e
-f
-EOF
-hg ci -m moda
+  $ hg diff --reverse -r0 -r1
+  diff -r 2855cdcfcbb7 -r 8e1805a3cf6e a
+  --- a/a	Thu Jan 01 00:00:00 1970 +0000
+  +++ b/a	Thu Jan 01 00:00:00 1970 +0000
+  @@ -1,3 +1,3 @@
+  -d
+  -e
+  -f
+  +a
+  +b
+  +c
 
-hg diff --reverse -r0 -r1
+  $ cat >> a <<EOF
+  > g
+  > h
+  > EOF
+  $ hg diff --reverse --nodates
+  diff -r 2855cdcfcbb7 a
+  --- a/a
+  +++ b/a
+  @@ -1,5 +1,3 @@
+   d
+   e
+   f
+  -g
+  -h
 
-cat >> a <<EOF
-g
-h
-EOF
-hg diff --reverse --nodates