diff --git a/src/models/Document.zig b/src/models/Document.zig
index 6b58a19..83fe9b2 100644
--- a/src/models/Document.zig
+++ b/src/models/Document.zig
@@ -1,13 +1,10 @@
 const std = @import("std");
 const basic_models = @import("basic_models.zig");
-const properties = @import("Property.zig");
-const Property = properties.Property;
-const PropertyData = properties.Data;
-const Point2 = basic_models.Point2;
 const Size = basic_models.Size;
-const Object = @import("Object.zig");
 const Document = @This();
 
+pub const Object = @import("Object.zig");
+
 size: Size,
 allocator: std.mem.Allocator,
 objects: std.ArrayList(Object),
diff --git a/src/models/Object.zig b/src/models/Object.zig
index 0e14ed6..13f5604 100644
--- a/src/models/Object.zig
+++ b/src/models/Object.zig
@@ -1,10 +1,10 @@
 const std = @import("std");
 const basic_models = @import("basic_models.zig");
-const defaultCommonProperties = @import("Property.zig").defaultCommonProperties;
+const Size = basic_models.Size;
+const Point2 = basic_models.Point2;
 const Property = @import("Property.zig").Property;
 const PropertyData = @import("Property.zig").Data;
-const Point2 = basic_models.Point2;
-const Size = basic_models.Size;
+const defaultCommonProperties = @import("Property.zig").defaultCommonProperties;
 const Object = @This();
 
 pub const ShapeKind = enum {
@@ -70,11 +70,10 @@ pub fn deinit(self: *Object, allocator: std.mem.Allocator) void {
     self.* = undefined;
 }
 
-fn createWithCommon(allocator: std.mem.Allocator, shape: ShapeKind) !Object {
-    const common = defaultCommonProperties();
+fn createWithCommonProperties(allocator: std.mem.Allocator, shape: ShapeKind) !Object {
     var properties_list = std.ArrayList(Property).empty;
     errdefer properties_list.deinit(allocator);
-    for (common) |d| try properties_list.append(allocator, .{ .data = d });
+    for (defaultCommonProperties) |prop| try properties_list.append(allocator, prop);
     return .{
         .shape = shape,
         .properties = properties_list,
@@ -83,28 +82,28 @@ fn createWithCommon(allocator: std.mem.Allocator, shape: ShapeKind) !Object {
 }
 
 pub fn createRect(allocator: std.mem.Allocator) !Object {
-    var obj = try createWithCommon(allocator, .rect);
+    var obj = try createWithCommonProperties(allocator, .rect);
     errdefer obj.deinit(allocator);
     try obj.properties.append(allocator, .{ .data = .{ .size = .{ .width = 100, .height = 100 } } });
     return obj;
 }
 
 pub fn createEllipse(allocator: std.mem.Allocator) !Object {
-    var obj = try createWithCommon(allocator, .ellipse);
+    var obj = try createWithCommonProperties(allocator, .ellipse);
     errdefer obj.deinit(allocator);
     try obj.properties.append(allocator, .{ .data = .{ .radii = .{ .x = 50, .y = 50 } } });
     return obj;
 }
 
 pub fn createLine(allocator: std.mem.Allocator) !Object {
-    var obj = try createWithCommon(allocator, .line);
+    var obj = try createWithCommonProperties(allocator, .line);
     errdefer obj.deinit(allocator);
     try obj.properties.append(allocator, .{ .data = .{ .end_point = .{ .x = 100, .y = 0 } } });
     return obj;
 }
 
 pub fn createBrokenLine(allocator: std.mem.Allocator) !Object {
-    var obj = try createWithCommon(allocator, .broken);
+    var obj = try createWithCommonProperties(allocator, .broken);
     errdefer obj.deinit(allocator);
     var points = std.ArrayList(Point2).init(allocator);
     try points.appendSlice(allocator, &.{
diff --git a/src/models/Property.zig b/src/models/Property.zig
index b6512ce..a1fa81d 100644
--- a/src/models/Property.zig
+++ b/src/models/Property.zig
@@ -46,7 +46,7 @@ pub const Property = struct {
     }
 };
 
-const default_common_data: []const Data = .{
+const default_common_data = [_]Data{
     .{ .position = .{ .x = 0, .y = 0 } },
     .{ .angle = 0 },
     .{ .scale = .{ .scale_x = 1, .scale_y = 1 } },
@@ -55,9 +55,13 @@ const default_common_data: []const Data = .{
     .{ .locked = false },
 };
 
-pub fn defaultCommonProperties() []const Data {
-    return &default_common_data;
-}
+pub const defaultCommonProperties: [default_common_data.len]Property = blk: {
+    var result: [default_common_data.len]Property = undefined;
+    for (default_common_data, &result) |d, *p| {
+        p.* = .{ .data = d };
+    }
+    break :blk result;
+};
 
 test "Property wrapper and Data" {
     const p = Property{ .data = .{ .opacity = 0.5 } };
@@ -66,8 +70,8 @@ test "Property wrapper and Data" {
 }
 
 test "common properties" {
-    const common = defaultCommonProperties();
-    try std.testing.expect(common[0] == .position);
-    try std.testing.expect(common[0].position.x == 0);
-    try std.testing.expect(common[2].visible == true);
+    try std.testing.expect(defaultCommonProperties[0].data == .position);
+    try std.testing.expect(defaultCommonProperties[0].data.position.x == 0);
+    try std.testing.expect(defaultCommonProperties[3].data == .visible);
+    try std.testing.expect(defaultCommonProperties[3].data.visible == true);
 }
diff --git a/src/tests.zig b/src/tests.zig
index 29bfb5a..5f39e71 100644
--- a/src/tests.zig
+++ b/src/tests.zig
@@ -1,6 +1,13 @@
-// Test root for `zig build test`.
-// Import modules here to ensure their `test` blocks are discovered.
-
-test "module test discovery" {
-    _ = @import("render/CpuRenderEngine.zig");
+// Корень для `zig build test`. Тесты из импортированных здесь модулей выполняются (в Zig не подтягиваются из транзитивных импортов).
+// Добавляй сюда _ = @import("path/to/module.zig"); для каждого модуля с test-блоками.
+// Чтобы увидеть список всех тестов: после `zig build test` выполни `./zig-out/bin/test`.
+test "discover tests" {
+    _ = @import("main.zig");
+    _ = @import("models/Property.zig");
+}
+
+// Убедиться, что выполнились все ожидаемые тесты: этот тест пройдёт только если до него дошли (т.е. все предыдущие прошли).
+test "all module tests completed" {
+    const std = @import("std");
+    std.debug.print("\n  (все тесты модулей выполнены)\n", .{});
 }