Add multiple scenes project test

Author: tomwyr

src/test/kotlin/com/tomwyr/GeneratorTest.kt

@@ -11,13 +11,18 @@ import kotlin.test.assertEquals
 
 class GeneratorTest {
     @Test
-    fun `generates expected output for simple project`() {
+    fun `generates expected output for project with single scene`() {
         test("simple", "com.simple.game")
     }
 
     @Test
-    fun `generates expected output for the example project`() {
-        test("example", "com.example.game")
+    fun `generates expected ouput for project with multiple independent scenes`() {
+        test("scene-changer", "com.scenes.changer")
+    }
+
+    @Test
+    fun `generates expected output for project with multiple scenes`() {
+        test("dodge-the-creeps", "com.example.game")
     }
 
     @BeforeTest
@@ -44,20 +49,20 @@ const val basePath = "src/test/resources/"
 
 fun setUpTestProject(testCase: String, targetPackage: String): GodotKotlinProject {
     return GodotKotlinProject(
-        "$basePath/$testCase/input",
-        "$basePath/$testCase/output/Actual",
+        "$basePath/$testCase/scenes",
+        "$basePath/$testCase/Actual",
         targetPackage,
     )
 }
 
 fun assertOutputsEqual(testCase: String) {
-    val expected = File("$basePath/$testCase/output/Expected").readText(Charsets.UTF_8)
-    val actual = File("$basePath/$testCase/output/Actual").readText(Charsets.UTF_8)
+    val expected = File("$basePath/$testCase/Expected").readText(Charsets.UTF_8)
+    val actual = File("$basePath/$testCase/Actual").readText(Charsets.UTF_8)
     assertEquals(expected, actual)
 }
 
 fun cleanUpGeneratedOutput(testCase: String) {
-    File("$basePath/$testCase/output/Actual").run {
+    File("$basePath/$testCase/Actual").run {
         if (exists()) delete()
     }
 }

src/test/resources/example/output/Expected renamed to src/test/resources/dodge-the-creeps/Expected

@@ -0,0 +1,33 @@
+package com.scenes.changer
+
+import godot.*
+import godot.core.NodePath
+import kotlin.reflect.KProperty
+
+object GDTree {
+    object SceneA : NodeRef<Panel>("/root/SceneA", "Panel") {
+        val Label = NodeRef<Label>("/root/SceneA/Label", "Label")
+        val GoToScene = NodeRef<Button>("/root/SceneA/GoToScene", "Button")
+    }
+    
+    object SceneB : NodeRef<Panel>("/root/SceneB", "Panel") {
+        val Label = NodeRef<Label>("/root/SceneB/Label", "Label")
+        val GoToScene = NodeRef<Button>("/root/SceneB/GoToScene", "Button")
+    }
+}
+
+open class NodeRef<T : Node>(
+        private val path: String,
+        private val type: String,
+) {
+    operator fun getValue(thisRef: Node, property: KProperty<*>): T {
+        val node = thisRef.getNode(NodePath(path)) ?: throw NodeNotFoundException(path)
+        @Suppress("UNCHECKED_CAST")
+        (node as? T) ?: throw NodeInvalidTypeException(type)
+        return node
+    }
+}
+
+class NodeNotFoundException(expectedPath: String) : Exception("Node not found under given path $expectedPath")
+
+class NodeInvalidTypeException(expectedType: String?) : Exception("Node is not an instance of $expectedType")

src/test/resources/example/input/HUD.tscn renamed to src/test/resources/dodge-the-creeps/scenes/HUD.tscn

@@ -0,0 +1,36 @@
+[gd_scene load_steps=2 format=3 uid="uid://dnveeke63vq8x"]
+
+[ext_resource type="Script" path="res://scene_a.gd" id="1"]
+
+[node name="SceneA" type="Panel"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 2
+size_flags_vertical = 2
+script = ExtResource("1")
+
+[node name="Label" type="Label" parent="."]
+layout_mode = 0
+offset_left = 64.0
+offset_top = 48.0
+offset_right = 104.0
+offset_bottom = 62.0
+size_flags_vertical = 0
+text = "This is scene A."
+
+[node name="GoToScene" type="Button" parent="."]
+layout_mode = 0
+offset_left = 64.0
+offset_top = 128.0
+offset_right = 277.0
+offset_bottom = 182.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+theme_override_colors/font_color = Color(0.639216, 1, 0.639216, 1)
+theme_override_font_sizes/font_size = 24
+text = "Go to Scene B"
+
+[connection signal="pressed" from="GoToScene" to="." method="_on_goto_scene_pressed"]

src/test/resources/example/input/Main.tscn renamed to src/test/resources/dodge-the-creeps/scenes/Main.tscn

@@ -0,0 +1,36 @@
+[gd_scene load_steps=2 format=3 uid="uid://c71ureg6hk2u1"]
+
+[ext_resource type="Script" path="res://scene_b.gd" id="1"]
+
+[node name="SceneB" type="Panel"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 2
+size_flags_vertical = 2
+script = ExtResource("1")
+
+[node name="Label" type="Label" parent="."]
+layout_mode = 0
+offset_left = 64.0
+offset_top = 48.0
+offset_right = 164.0
+offset_bottom = 62.0
+size_flags_vertical = 0
+text = "This is scene B."
+
+[node name="GoToScene" type="Button" parent="."]
+layout_mode = 0
+offset_left = 64.0
+offset_top = 128.0
+offset_right = 277.0
+offset_bottom = 182.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+theme_override_colors/font_color = Color(0.905882, 0.627451, 0.984314, 1)
+theme_override_font_sizes/font_size = 24
+text = "Go to Scene A"
+
+[connection signal="pressed" from="GoToScene" to="." method="_on_goto_scene_pressed"]