feat(mosstank): add VTank-style automation PoC

tests/AcDream.Plugins.MossTank.Tests/VtankDamageDatabaseTests.cs

@@ -0,0 +1,58 @@
+using AcDream.Plugin.Abstractions;
+
+namespace AcDream.Plugins.MossTank.Tests;
+
+public sealed class VtankDamageDatabaseTests
+{
+    [Fact]
+    public void ExactMonsterOverrideWinsOverSpecies()
+    {
+        PluginCombatTarget target = Target("Magma Golem", 1);
+
+        Assert.Equal(
+            [
+                MonsterDamageType.Cold,
+                MonsterDamageType.Bludgeon,
+                MonsterDamageType.Pierce,
+                MonsterDamageType.Slash,
+            ],
+            VtankDamageDatabase.Preferences(target));
+    }
+
+    [Fact]
+    public void CreatureTypeUsesOfficialOrderedSpeciesPreference()
+    {
+        PluginCombatTarget target = Target("Some Olthoi", 1);
+
+        Assert.Equal(MonsterDamageType.Bludgeon,
+            VtankDamageDatabase.Preferences(target)[0]);
+        Assert.True(
+            VtankDamageDatabase.PreferenceIndex(
+                target,
+                MonsterDamageType.Bludgeon)
+            < VtankDamageDatabase.PreferenceIndex(
+                target,
+                MonsterDamageType.Fire));
+    }
+
+    [Fact]
+    public void UnknownTargetUsesVtankFinalFallbackOrder()
+    {
+        PluginCombatTarget target = Target("New Server Creature", 0);
+
+        Assert.Equal(
+            [
+                MonsterDamageType.Pierce,
+                MonsterDamageType.Bludgeon,
+                MonsterDamageType.Slash,
+                MonsterDamageType.Acid,
+                MonsterDamageType.Electric,
+                MonsterDamageType.Cold,
+                MonsterDamageType.Fire,
+            ],
+            VtankDamageDatabase.Preferences(target));
+    }
+
+    private static PluginCombatTarget Target(string name, int species) =>
+        new(10, name, 100, 5, 0, true, 1f) { SpeciesId = species };
+}