From e19ba584463750301836dc5edd8cf2835fca1542 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 19 Nov 2019 00:49:54 +0000
Subject: [PATCH] tests: Introduce `diff' proc

No functional change.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 mtest/common.tcl | 12 ++++++++----
 mtest/t-basic    |  5 +----
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/mtest/common.tcl b/mtest/common.tcl
index e3b67c4..a016dae 100644
--- a/mtest/common.tcl
+++ b/mtest/common.tcl
@@ -17,13 +17,17 @@ proc run-mss-userv {user group args} {
 
 proc run-mss {args} { eval [list exec] [mss-program] $args }
 
+proc diff {a b seddery} {
+    exec bash -c "
+    	diff -u <($seddery $a) \\
+        	<($seddery $b)
+    "
+}
+
 proc diff-output {expected got suffix} {
     global seddery
     global tmp
-    exec bash -c "
-    	diff -u <($seddery mtest/$expected$suffix) \\
-        	<($seddery $tmp/$got$suffix      )
-    "
+    diff mtest/$expected$suffix $tmp/$got$suffix $seddery
 }
 
 file mkdir $tmp/groupfiles
diff --git a/mtest/t-basic b/mtest/t-basic
index e3ced5a..ad754c1 100755
--- a/mtest/t-basic
+++ b/mtest/t-basic
@@ -5,7 +5,4 @@ source mtest/common.tcl
 run-mss --no-conf-key-prefix test-example/sites $tmp/out.conf
 
 set seddery { sed -n 's/^[ \t]*//; /^[^#]/p' }
-exec bash -c "
-    diff -u <($seddery mtest/e-basic.conf) \\
-            <($seddery $tmp/out.conf     )
-"
+diff  mtest/e-basic.conf $tmp/out.conf $seddery
-- 
2.30.2