tests: unify test-cat

tests/test-cat.t

@@ -1,18 +1,24 b''
-#!/bin/sh
-#
-mkdir t
-cd t
-hg init
-echo 0 > a
-echo 0 > b
-hg ci -A -m m -d "1000000 0"
-hg rm a
-hg cat a
-hg cat --decode a # more tests in test-encode
-echo 1 > b
-hg ci -m m -d "1000000 0"
-echo 2 > b
-hg cat -r 0 a
-hg cat -r 0 b
-hg cat -r 1 a
-hg cat -r 1 b
+  $ mkdir t
+  $ cd t
+  $ hg init
+  $ echo 0 > a
+  $ echo 0 > b
+  $ hg ci -A -m m -d "1000000 0"
+  adding a
+  adding b
+  $ hg rm a
+  $ hg cat a
+  0
+  $ hg cat --decode a # more tests in test-encode
+  0
+  $ echo 1 > b
+  $ hg ci -m m -d "1000000 0"
+  $ echo 2 > b
+  $ hg cat -r 0 a
+  0
+  $ hg cat -r 0 b
+  0
+  $ hg cat -r 1 a
+  a: No such file in rev 03f6b0774996
+  $ hg cat -r 1 b
+  1