Add a unit test for wesnoth.create_side

data/test/scenarios/test_create_side.cfg

@@ -0,0 +1,73 @@
+{GENERIC_UNIT_TEST "test_create_side" (
+    [event]
+        name=start
+
+        # Sanity-check the preconditions
+        [store_side]
+            variable=sides
+        [/store_side]
+        {ASSERT {VARIABLE_CONDITIONAL sides.length equals 2}}
+
+        [lua]
+            code=<< wesnoth.create_side() -- >>
+        [/lua]
+        [store_side]
+            variable=sides
+        [/store_side]
+        {ASSERT {VARIABLE_CONDITIONAL sides.length equals 3}}
+
+        # Try making some modifications to the side
+        [unit]
+            side=3
+            name="Charlie"
+            type=Chocobone
+            id=charlie
+            canrecruit=yes
+            x,y=13,4
+        [/unit]
+
+        [lua]
+            code=<< wesnoth.create_side() -- >>
+        [/lua]
+        [store_side]
+            variable=sides
+        [/store_side]
+        {ASSERT {VARIABLE_CONDITIONAL sides.length equals 4}}
+
+        # Ally 1 with 4 and 2 with 3, like the default on Isar's Cross
+        [modify_side]
+            side=3
+            team_name=$sides[1].team_name
+        [/modify_side]
+        [modify_side]
+            side=4
+            team_name=$sides[0].team_name
+        [/modify_side]
+        [unit]
+            side=4
+            name="Dave"
+            type=Dwarvish Fighter
+            id=dave
+            canrecruit=yes
+            x,y=7,4
+        [/unit]
+
+        [store_side]
+            [enemy_of]
+                side=1
+            [/enemy_of]
+            variable=sides
+        [/store_side]
+        {ASSERT {VARIABLE_CONDITIONAL sides.length equals 2}}
+
+        [store_side]
+            [allied_with]
+                side=1
+            [/allied_with]
+            variable=sides
+        [/store_side]
+        {ASSERT {VARIABLE_CONDITIONAL sides.length equals 2}}
+
+        {SUCCEED}
+    [/event]
+)}

wml_test_schedule

@@ -225,6 +225,8 @@
 0 test_modify_ai_nested_facets
 0 test_modify_ai_composite_default_facets
 0 test_modify_ai_change_aspect
+# Changing the number of sides
+0 test_create_side
 # Event tests
 0 order_of_variable_events1
 1 order_of_variable_events2