add tests for no-overwrite functionality

diff --git a/tests/create-no-overwrite b/tests/create-no-overwrite
new file mode 100755 (executable)
index 0000000..aab4ffa
--- /dev/null
+++ b/tests/create-no-overwrite
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+. $(dirname $0)/functions
+
+BASE=$BASEDIR/$(basename $0)-test
+PREFIX=$BUILDDIR/$(basename $0)-test
+
+# currently, we do not properly copy cdp and pdp information, so for
+# comparison of RRD dumps, we just filter out those parts we do not
+# expect to match anyway...
+function xmlfilter {
+
+#-               <last_ds>1010</last_ds>
+#-               <value>4.0400000000e+04</value>
+#-               <unknown_sec> 0 </unknown_sec>
+#+               <last_ds>U</last_ds>
+#+               <value>0.0000000000e+00</value>
+#+               <unknown_sec> 40 </unknown_sec>
+
+
+       perl -n -e '$a=join("",<>); $a=~s,<(cdp_prep|last_ds|value|unknown_sec).*?</\1>,,msg ; print $a'
+}
+
+
+ST=1300000000
+
+rm -f ${PREFIX}*.rrd ${PREFIX}*.xml
+$RRDTOOL create ${PREFIX}a1.rrd --no-overwrite --start $(($ST-1)) --step 60 DS:a:GAUGE:120:0:U  RRA:AVERAGE:0.5:1:100 RRA:AVERAGE:0.5:5:2 RRA:MIN:0.5:5:2 RRA:MAX:0.5:5:2 RRA:LAST:0.5:5:2
+report create-new-RRD
+
+
+! $RRDTOOL create ${PREFIX}a1.rrd --no-overwrite --start $(($ST-1)) --step 60 DS:a:GAUGE:120:0:U  RRA:AVERAGE:0.5:1:100 RRA:AVERAGE:0.5:5:2 RRA:MIN:0.5:5:2 RRA:MAX:0.5:5:2 RRA:LAST:0.5:5:2 2>/dev/null
+report fail-using-no-overwrite-1
+
+
+rm -f ${PREFIX}a1.rrd
+touch ${PREFIX}a1.rrd
+! $RRDTOOL create ${PREFIX}a1.rrd --no-overwrite --start $(($ST-1)) --step 60 DS:a:GAUGE:120:0:U  RRA:AVERAGE:0.5:1:100 RRA:AVERAGE:0.5:5:2 RRA:MIN:0.5:5:2 RRA:MAX:0.5:5:2 RRA:LAST:0.5:5:2 2>/dev/null
+report fail-using-no-overwrite-2
+
+rm -f ${PREFIX}a1.rrd
+touch ${PREFIX}a1.rrd
+$RRDTOOL create ${PREFIX}a1.rrd --no-overwrite --start $(($ST-1)) --step 60 DS:a:GAUGE:120:0:U  RRA:AVERAGE:0.5:1:100 RRA:AVERAGE:0.5:5:2 RRA:MIN:0.5:5:2 RRA:MAX:0.5:5:2 RRA:LAST:0.5:5:2 2>/dev/null
+[ $? = 1 ] ; report "exit code == 1"
+
+rm -f ${PREFIX}a1.rrd
+touch ${PREFIX}a1.rrd
+$RRDTOOL create ${PREFIX}a1.rrd --start $(($ST-1)) --step 60 DS:a:GAUGE:120:0:U  RRA:AVERAGE:0.5:1:100 RRA:AVERAGE:0.5:5:2 RRA:MIN:0.5:5:2 RRA:MAX:0.5:5:2 RRA:LAST:0.5:5:2 
+report create-using-overwrite
+
+[ -s ${PREFIX}a1.rrd ]
+report overwritten-rrd-size-larger-than-0
+
+rm -f ${PREFIX}*.rrd ${PREFIX}*.xml