// SwingRenderer测试
@Test
public void testSwingRendererDrawCircle() {
    SwingRenderer renderer = new SwingRenderer();
    MockGraphics2D mockGraphics = new MockGraphics2D();
    renderer.setGraphics(mockGraphics);
    
    renderer.drawCircle(100, 100, 50);
    assertEquals("draw:Ellipse2D", mockGraphics.lastDrawCall);
}

// SVGRenderer测试
@Test
public void testSVGRendererOutput() {
    SVGRenderer renderer = new SVGRenderer();
    renderer.beginFrame();
    renderer.drawCircle(100, 100, 50);
    renderer.endFrame();
    // 验证控制台输出或获取SVG字符串验证
}

@Test
public void testCreateCircleWithInvalidRadius() {
    ShapeFactory factory = new ShapeFactoryImpl();
    assertThrows(IllegalArgumentException.class, 
        () -> factory.createCircle(0, 0, -1));
}

@Test
public void testCreateValidRectangle() {
    ShapeFactory factory = new ShapeFactoryImpl();
    Rectangle rect = factory.createRectangle(10, 10, 100, 50);
    assertNotNull(rect);
    assertEquals(100, rect.getWidth());
}

@Test
public void testAddShapeCommand() {
    List<Shape> shapes = new ArrayList<>();
    Circle circle = new Circle(10, 10, 5);
    Command cmd = new AddShapeCommand(shapes, circle);
    
    cmd.execute();
    assertEquals(1, shapes.size());
    
    cmd.undo();
    assertTrue(shapes.isEmpty());
}

@Test
public void testFullRenderPipeline() {
    // 创建图形
    ShapeFactory factory = new ShapeFactoryImpl();
    Circle circle = factory.createCircle(100, 100, 50);
    
    // 创建渲染器
    SwingRenderer renderer = new SwingRenderer();
    MockGraphics2D mockGraphics = new MockGraphics2D();
    renderer.setGraphics(mockGraphics);
    
    // 渲染图形
    renderer.beginFrame();
    circle.draw(renderer);
    renderer.endFrame();
    
    // 验证
    assertEquals(1, mockGraphics.drawCallCount);
}

@Test
public void testUndoRedoWorkflow() {
    UndoManager manager = new UndoManager();
    List<Shape> shapes = new ArrayList<>();
    Shape circle = new Circle(10, 10, 5);
    
    // 执行添加命令
    manager.executeCommand(new AddShapeCommand(shapes, circle));
    assertEquals(1, shapes.size());
    
    // 撤销
    manager.undo();
    assertTrue(shapes.isEmpty());
    
    // 重做
    manager.redo();
    assertEquals(1, shapes.size());
}

@Test
public void performanceTestRender1000Circles() {
    SwingRenderer renderer = new SwingRenderer();
    renderer.setGraphics(new MockGraphics2D());
    
    long startTime = System.currentTimeMillis();
    renderer.beginFrame();
    for (int i = 0; i < 1000; i++) {
        renderer.drawCircle(i % 500, i % 300, 10);
    }
    renderer.endFrame();
    long duration = System.currentTimeMillis() - startTime;
    
    assertTrue(duration < 1000); // 应在1秒内完成
}

@Test
public void memoryUsageTest() {
    Runtime runtime = Runtime.getRuntime();
    long before = runtime.totalMemory() - runtime.freeMemory();
    
    List<Shape> shapes = new ArrayList<>();
    for (int i = 0; i < 10000; i++) {
        shapes.add(new Circle(i % 500, i % 300, 10));
    }
    
    long after = runtime.totalMemory() - runtime.freeMemory();
    long used = after - before;
    assertTrue(used < 10 * 1024 * 1024); // 应小于10MB
}

# 运行所有单元测试
mvn test

# 运行集成测试
mvn verify

# 生成覆盖率报告
mvn jacoco:report