add test of [modify_unit] facing= attribute

data/test/scenarios/facing.cfg

@@ -0,0 +1,53 @@
+#define TURN_UNIT ID DIRECTION   
+     [modify_unit]
+       [filter]
+            id={ID}
+       [/filter]
+       facing={DIRECTION}
+    [/modify_unit]
+    [store_unit]
+       [filter]
+           id={ID}
+       [/filter]
+       variable=temp
+       kill=no
+    [/store_unit]
+    {ASSERT ({VARIABLE_CONDITIONAL temp.facing equals {DIRECTION}})}
+#enddef
+
+{GENERIC_UNIT_TEST "modify_unit_facing" (
+    [event]
+        name = side 1 turn 1
+        {TURN_UNIT alice "n"}
+    [/event]
+    [event]
+        name = side 1 turn 2
+        {TURN_UNIT alice "ne"}
+    [/event]
+    [event]
+        name = side 1 turn 3
+        {TURN_UNIT alice "nw"}
+    [/event]
+    [event]
+        name = side 1 turn 4
+        {TURN_UNIT alice "s"}
+    [/event]
+    [event]
+        name = side 1 turn 5
+        {TURN_UNIT alice "sw"}
+    [/event]
+    [event]
+        name = side 1 turn 6
+        {TURN_UNIT alice "se"}
+    [/event]
+    [event]
+        name = side 1 turn 7
+        {RETURN ([true][/true])}
+    [/event]
+    [event]
+        name = side turn
+        first_time_only = no
+        [end_turn]
+        [/end_turn]
+    [/event]
+)}

wml_test_schedule

@@ -70,6 +70,7 @@
 0 modify_turns_three
 0 modify_turns_four
 0 replace_schedule_prestart
+0 modify_unit_facing
 #
 # Attack calculations & codepath tests
 #