// Get a page where contextual links are directly rendered.
$this->drupalGet(Url::fromRoute('menu_test.contextual_test'));
$this->assertEscaped("<script>alert('Welcome to the jungle!')</script>");
// Get a page where contextual links are directly rendered.
$this->drupalGet(Url::fromRoute('menu_test.contextual_test'));
$this->assertEscaped("<script>alert('Welcome to the jungle!')</script>");