tests: add a test for one ip range

A regression test for commit ffffbc9 fix.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

tests/Makefile.am

@@ -4,6 +4,7 @@ TESTS = \
 	empty \
 	full-json \
 	leading0 \
+	one-ip \
 	same-twice \
 	simple \
 	v6

tests/confs/one-ip

@@ -0,0 +1 @@
+range 10.20.30.40;

tests/expected/one-ip

@@ -0,0 +1,10 @@
+Ranges:
+shared net name     first ip           last ip            max   cur    percent  touch   t+c  t+c perc
+All networks        10.20.30.40      - 10.20.30.40          1     1    100.000      0     1   100.000
+
+Shared networks:
+name                   max   cur     percent  touch    t+c  t+c perc
+
+Sum of all ranges:
+name                   max   cur     percent  touch    t+c  t+c perc
+All networks             1     1    100.000       0      1   100.000

tests/leases/one-ip

@@ -0,0 +1,4 @@
+lease 10.20.30.40 {
+  binding state active;
+  hardware ethernet 00:00:00:00:00:00;
+}

tests/one-ip

@@ -0,0 +1 @@
+test.sh