/** */ public function testVisibility() { $style = new StrokeStyle(); $this->assertTrue($style->isVisible()); $style->setOpacity(0); $this->assertFalse($style->isVisible()); $style->setOpacity(1)->setWidth(0); $this->assertFalse($style->isVisible()); $style->setWidth(2); $this->assertTrue($style->isVisible()); }