Add tests for ranges and negative values in ability filters

Changed to use "-" instead of ".." as the separator by octalot,
but I believe newfrenchy83 prefers "..".

data/test/scenarios/wml_tests/ScenarioWML/EventWML/events-test_filter_ability.cfg

@@ -10,6 +10,8 @@
 # During Bob's turn, have Bob attack Alice.
 ##
 #define FILTER_ABILITY_TEST
+#arg DRAINS_VALUE
+25#endarg
     [event]
         name=start
         # Make sure the attacks hit
@@ -29,7 +31,7 @@
                 apply_to=new_ability
                 [abilities]
                     [drains]
-                        value=25
+                        value={DRAINS_VALUE}
                         [filter]
                             [filter_location]
                                 time_of_day=neutral
@@ -110,6 +112,54 @@
     [/event]
 )}
 
+{GENERIC_UNIT_TEST event_test_filter_ability_interval_number (
+    {FILTER_ABILITY_TEST}
+    [event]
+        name=attack
+        [filter]
+            [filter_ability]
+                tag_name=drains
+                value=10-30
+            [/filter_ability]
+        [/filter]
+        {ASSERT ({VARIABLE_CONDITIONAL side_number equals 1})}
+        {VARIABLE_OP triggers add 1}
+    [/event]
+    [event]
+        name=turn 2
+        {RETURN ({VARIABLE_CONDITIONAL triggers equals 1})}
+    [/event]
+)}
+
+# API(s) being tested: [event][filter][filter_ability]
+##
+# Actions:
+# Use the common setup from FILTER_ABILITY_TEST.
+# Add an event with a filter matching Alice's drains ability.
+# Alice attacks Bob and then Bob attacks Alice, as defined in FILTER_ABILITY_TEST.
+##
+# Expected end state:
+# The filtered event is triggered exactly once.
+#####
+{GENERIC_UNIT_TEST event_test_filter_ability_neg_value (
+    {FILTER_ABILITY_TEST DRAINS_VALUE=-25}
+    [event]
+        name=attack
+        [filter]
+            [filter_ability]
+                tag_name=drains
+                value=-25--10
+            [/filter_ability]
+        [/filter]
+        {ASSERT ({VARIABLE_CONDITIONAL side_number equals 1})}
+        {VARIABLE_OP triggers add 1}
+    [/event]
+    [event]
+        name=turn 2
+        {RETURN ({VARIABLE_CONDITIONAL triggers equals 1})}
+    [/event]
+)}
+
 #####
 # API(s) being tested: [event][filter][filter_ability]
 ##
@@ -139,6 +189,35 @@
     [/event]
 )}
 
+#####
+# API(s) being tested: [event][filter][filter_ability]
+##
+# Actions:
+# Use the common setup from FILTER_ABILITY_TEST.
+# Add an event with a filter for a drains ability, but a different value to Alice's ability.
+# Alice attacks Bob and then Bob attacks Alice, as defined in FILTER_ABILITY_TEST.
+##
+# Expected end state:
+# The filtered event is never triggered.
+#####
+{GENERIC_UNIT_TEST event_test_filter_ability_no_match_neg_prefix (
+    {FILTER_ABILITY_TEST}
+    [event]
+        name=attack
+        [filter]
+            [filter_ability]
+                tag_name=drains
+                value=-45-10
+            [/filter_ability]
+        [/filter]
+        {FAIL}
+    [/event]
+    [event]
+        name=turn 2
+        {SUCCEED}
+    [/event]
+)}
+
 #####
 # API(s) being tested: [event][filter][filter_ability_active]
 ##

wml_test_schedule

@@ -143,7 +143,10 @@
 0 event_test_filter_side
 0 event_test_filter_unit
 0 event_test_filter_ability
+0 event_test_filter_ability_interval_number
+0 event_test_filter_ability_neg_value
 0 event_test_filter_ability_no_match
+0 event_test_filter_ability_no_match_neg_prefix
 0 event_test_filter_ability_active
 0 event_test_filter_ability_active_inactive
 0 test_ability_id_active