Add unit tests for areas plugin

game/plugin/areas/test/AreaActionTests.kt

@@ -0,0 +1,59 @@
+import org.apollo.game.model.Position
+import org.apollo.game.model.entity.Player
+import org.apollo.game.plugin.testing.junit.ApolloTestingExtension
+import org.apollo.game.plugin.testing.junit.api.annotations.TestMock
+import org.apollo.game.plugins.area.action
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.extension.ExtendWith
+
+@ExtendWith(ApolloTestingExtension::class)
+class AreaActionTests {
+
+    @TestMock
+    lateinit var player: Player
+
+    @Test
+    fun `entrance action is triggered when a player enters the area`() {
+        var triggered = false
+        val position = Position(3222, 3222)
+
+        action("entrance_test_action", predicate = { it == player.position }) {
+            triggered = true
+        }
+
+        player.position = position
+
+        assertTrue(triggered) { "entrance_test_action was not triggered." }
+    }
+
+    @Test
+    fun `inside action is triggered when a player moves inside an area`() {
+        player.position = Position(3222, 3222)
+        var triggered = false
+
+        action("inside_test_action", x = 3220..3224, y = 3220..3224) {
+            triggered = true
+        }
+
+        player.position = Position(3223, 3222)
+
+        assertTrue(triggered) { "inside_test_action was not triggered." }
+    }
+
+    @Test
+    fun `exit action is triggered when a player exits the area`() {
+        player.position = Position(3222, 3222)
+
+        var triggered = false
+
+        action("exit_test_action", predicate = { it == player.position }) {
+            triggered = true
+        }
+
+        player.position = Position(3221, 3221)
+
+        assertTrue(triggered) { "exit_test_action was not triggered." }
+    }
+
+}