Added unit tests

test/1missing.input

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+Personalities : [raid6] [raid5] [raid4]
+md0 : active raid5 sda1[0] sdd1[2] sdb1[1]
+     1465151808 blocks level 5, 64k chunk, algorithm 2 [4/3] [UUU_]
+    unused devices: <none>

test/1missing.output

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+CRITICAL: Missing 1 of 4 devices | 'raid level'=5 'size in blocks'=1465151808 'num devices'=4 'num bad devices'=1;;1;0;4

test/OK1.input

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+Personalities : [raid1] 
+md0 : active raid1 sdb1[1] sda1[0]
+      976430080 blocks super 1.2 [2/2] [UU]
+      bitmap: 0/8 pages [0KB], 65536KB chunk
+
+unused devices: <none>

test/OK1.output

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+OK | 'raid level'=1 'size in blocks'=976430080 'num devices'=2 'num bad devices'=0;;1;0;2

test/OK2.input

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+Personalities : [raid1] [raid6] [raid5] [raid4]
+md0 : active raid5 sde1[0] sdf1[4] sdb1[5] sdd1[2] sdc1[1]
+      1250241792 blocks super 1.2 level 5, 64k chunk, algorithm 2 [5/5] [UUUUU]
+      bitmap: 0/10 pages [0KB], 16384KB chunk
+
+unused devices: <none>

test/OK2.output

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+OK | 'raid level'=5 'size in blocks'=1250241792 'num devices'=5 'num bad devices'=0;;1;0;5

test/OK3.input

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+Personalities : [raid1] [raid6] [raid5] [raid4]
+md1 : active raid1 sdb2[1] sda2[0]
+      136448 blocks [2/2] [UU]
+
+md2 : active raid1 sdb3[1] sda3[0]
+      129596288 blocks [2/2] [UU]
+
+md0 : active raid5 sdl1[9] sdk1[8] sdj1[7] sdi1[6] sdh1[5] sdg1[4] sdf1[3] sde1[2] sdd1[1] sdc1[0]
+      1318680576 blocks level 5, 1024k chunk, algorithm 2 [10/10] [UUUUUUUUUU]
+
+md3 : active raid1 sdb1[1] sda1[0]
+      16787776 blocks [2/2] [UU]
+
+unused devices: <none> 

test/OK3.output

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+OK | 'raid level'=5 'size in blocks'=1318680576 'num devices'=10 'num bad devices'=0;;1;0;10

test/bitmap.input

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+Personalities : [linear] [raid0] [raid1] [raid5] [raid4] [raid6]
+md0 : active raid6 sdf1[0] sde1[1] sdd1[2] sdc1[3] sdb1[4] sda1[5] hdb1[6]
+      1225557760 blocks level 6, 256k chunk, algorithm 2 [7/7] [UUUUUUU]
+      bitmap: 0/234 pages [0KB], 512KB chunk
+
+unused devices: <none>
+

test/bitmap.output

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+OK | 'raid level'=6 'size in blocks'=1225557760 'num devices'=7 'num bad devices'=0;;1;0;7

test/notExisting.input

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+Personalities : [raid1] [raid6] [raid5] [raid4]
+md1 : active raid1 sdb2[1] sda2[0]
+      136448 blocks [2/2] [UU]
+
+unused devices: <none> 

test/notExisting.output

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+CRITICAL: RAID md0 not found in notExisting.input

test/recovery.input

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+Personalities : [raid1] [raid6] [raid5] [raid4]
+md0 : active raid5 sdh1[6] sdg1[4] sdf1[3] sde1[2] sdd1[1] sdc1[0]
+      1464725760 blocks level 5, 64k chunk, algorithm 2 [6/5] [UUUUUU]
+      [==>..................]  recovery = 12.6% (37043392/292945152) finish=127.5min speed=33440K/sec
+
+unused devices: <none>

test/recovery.output

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+WARNING: Recovering: progress=12.6% finish=127.5min speed=33440K/sec | 'raid level'=5 'size in blocks'=1464725760 'num devices'=6 'num bad devices'=0;;1;0;6 'recovery progress'=12.6%;0;;0;100

test/run.sh

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+dir="`dirname $0`"
+
+ERROR=false
+for f in `ls $dir/*.input`; do
+	RESULT="`$dir/../check_mdstat.sh --raid md0 --input $f`"
+	EXPECTED="`cat $dir/$(basename $f .input).output`"
+	if [ "$RESULT" != "$EXPECTED" ]; then
+		echo "Error for test $(basename $f .input):"
+		echo "	Expected"
+		echo "		$EXPECTED"
+		echo "	and got"
+		echo "		$RESULT"
+		ERROR=true
+	fi
+done
+
+if $ERROR; then
+	exit 1;
+else
+	echo "Tests passed."
+	exit 0;
+fi