blender-bridge / test / test_integration.gd

## Integration test: BlenderBridge + VirtualTexture working together.
##
## Run with: godot4 --headless --script test/test_integration.gd
##
## Tests:
## 1. Both nodes initialize and start
## 2. Scene export populates shared memory
## 3. VirtualTexture creates GPU resources
## 4. Texture registration returns valid IDs
## 5. Invalidation forwards from BlenderBridge to VirtualTexture
## 6. Stats report correct values
extends SceneTree


func _init() -> void:
	print("=== Integration Test: BlenderBridge + VirtualTexture ===")
	var passed := 0
	var failed := 0

	# ── Test 1: Create and configure both nodes ──────────────────────
	print("  Creating nodes...")
	var bridge := BlenderBridge.new()
	bridge.name = "Bridge"
	bridge.shm_name = "/test_integration"
	bridge.shm_size = 1024 * 1024  # 1 MB for testing
	bridge.max_objects = 32

	var vt := VirtualTexture.new()
	vt.name = "VT"
	vt.tile_size = 64  # Smaller for testing
	vt.tile_budget = 8
	vt.cache_grid_size = 4  # 4×4 = 16 slots
	vt.mip_levels = 4

	root.add_child(bridge)
	root.add_child(vt)

	# Wire them together
	bridge.virtual_texture_path = bridge.get_path_to(vt)

	# ── Test 2: Start server ─────────────────────────────────────────
	var err := bridge.start_server("/tmp/test_bb_integration.sock")
	if err == OK:
		print("  start_server...                         PASS")
		passed += 1
	else:
		print("  start_server...                         FAIL (err=%d)" % err)
		failed += 1

	# ── Test 3: Export scene with a mesh ──────────────────────────────
	var mesh_inst := MeshInstance3D.new()
	mesh_inst.name = "TestCube"
	mesh_inst.mesh = BoxMesh.new()
	mesh_inst.position = Vector3(1.0, 2.0, 3.0)
	root.add_child(mesh_inst)

	err = bridge.export_scene(root)
	if err == OK:
		print("  export_scene...                         PASS")
		passed += 1
	else:
		print("  export_scene...                         FAIL (err=%d)" % err)
		failed += 1

	# ── Test 4: Verify export info ───────────────────────────────────
	var info: Dictionary = bridge.get_export_info()
	if info["object_count"] >= 1:
		print("  export_info object_count...              PASS")
		passed += 1
	else:
		print("  export_info object_count...              FAIL (count=%d)" % info["object_count"])
		failed += 1

	# ── Test 5: Register textures ────────────────────────────────────
	var tex_id1: int = vt.register_texture("diffuse_01")
	var tex_id2: int = vt.register_texture("normal_01")
	if tex_id1 > 0 and tex_id2 > 0 and tex_id1 != tex_id2:
		print("  register_texture...                     PASS")
		passed += 1
	else:
		print("  register_texture...                     FAIL (ids=%d,%d)" % [tex_id1, tex_id2])
		failed += 1

	# ── Test 6: Texture count ────────────────────────────────────────
	if vt.get_texture_count() == 2:
		print("  texture_count...                        PASS")
		passed += 1
	else:
		print("  texture_count...                        FAIL (count=%d)" % vt.get_texture_count())
		failed += 1

	# ── Test 7: Invalidation forwarding ──────────────────────────────
	# This should forward to SVT without crashing
	bridge.notify_texture_dirty(tex_id1, 0, 0, 2, 2, 0)
	print("  notify_texture_dirty...                 PASS")
	passed += 1

	# ── Test 8: Stats ────────────────────────────────────────────────
	var stats: Dictionary = vt.get_stats()
	if stats.has("cache_total") and stats["cache_total"] == 16:
		print("  svt_stats...                             PASS")
		passed += 1
	else:
		print("  svt_stats...                             FAIL")
		failed += 1

	# ── Test 9: Unregister texture ───────────────────────────────────
	vt.unregister_texture(tex_id2)
	if vt.get_texture_count() == 1:
		print("  unregister_texture...                   PASS")
		passed += 1
	else:
		print("  unregister_texture...                   FAIL (count=%d)" % vt.get_texture_count())
		failed += 1

	# ── Cleanup ──────────────────────────────────────────────────────
	bridge.stop_server()
	mesh_inst.queue_free()

	print("")
	if failed == 0:
		print("All %d tests passed." % passed)
	else:
		print("%d passed, %d FAILED." % [passed, failed])

	quit()