Index: tests/conf/tests/Makefile
===================================================================
--- tests/conf/tests/Makefile	(revision 2261)
+++ tests/conf/tests/Makefile	(revision 2262)
@@ -1,6 +1,7 @@
 TESTS =  \
 	list_merge.diff \
 	list_set.diff \
+	arr_set.diff \
 	scalar.diff
 
 .SUFFIXES: .ref .test .out .diff
Index: tests/conf/tests/arr_set.ref
===================================================================
--- tests/conf/tests/arr_set.ref	(nonexistent)
+++ tests/conf/tests/arr_set.ref	(revision 2262)
@@ -0,0 +1,16 @@
+=== initial state: empty ===
+ I design/default_layer_name[] = <empty>
+=== append two items ===
+ I design/default_layer_name[0] = foo <<prio=700 from=<cmd_reset *>:0>> conf_rev=1
+ I design/default_layer_name[0] = foo <<prio=700 from=<cmd_reset *>:0>> conf_rev=2
+ I design/default_layer_name[1] = bar <<prio=700 from=<cmd_reset *>:0>> conf_rev=2
+=== prepend two items ===
+ I design/default_layer_name[0] = pre1 <<prio=700 from=<cmd_reset *>:0>> conf_rev=3
+ I design/default_layer_name[1] = foo <<prio=700 from=<cmd_reset *>:0>> conf_rev=3
+ I design/default_layer_name[2] = bar <<prio=700 from=<cmd_reset *>:0>> conf_rev=3
+ I design/default_layer_name[0] = pre2 <<prio=700 from=<cmd_reset *>:0>> conf_rev=4
+ I design/default_layer_name[1] = pre1 <<prio=700 from=<cmd_reset *>:0>> conf_rev=4
+ I design/default_layer_name[2] = foo <<prio=700 from=<cmd_reset *>:0>> conf_rev=4
+ I design/default_layer_name[3] = bar <<prio=700 from=<cmd_reset *>:0>> conf_rev=4
+=== overwrite ===
+ I design/default_layer_name[0] = new <<prio=700 from=<cmd_reset *>:0>> conf_rev=5
Index: tests/conf/tests/arr_set.test
===================================================================
--- tests/conf/tests/arr_set.test	(nonexistent)
+++ tests/conf/tests/arr_set.test	(revision 2262)
@@ -0,0 +1,29 @@
+role design
+
+echo === initial state: empty ===
+reset *
+dump native design/default_layer_name
+
+echo === append two items ===
+policy append
+
+set design/default_layer_name foo
+dump native design/default_layer_name
+
+set design/default_layer_name bar
+dump native design/default_layer_name
+
+echo === prepend two items ===
+policy prepend
+
+set design/default_layer_name pre1
+dump native design/default_layer_name
+
+set design/default_layer_name pre2
+dump native design/default_layer_name
+
+echo === overwrite ===
+policy overwrite
+
+set design/default_layer_name new
+dump native design/default_layer_name