<?phpnamespaceyiiunit\framework\widgets;useyii\widgets\Spaceless;classSpacelessTestextends\yiiunit\TestCase{publicfunctiontestWidget(){ob_start();ob_implicit_flush(false);echo"<body>\n";Spaceless::begin();echo"\t<div class='wrapper'>\n";Spaceless::begin();echo"\t\t<div class='left-column'>\n";echo"\t\t\t<p>This is a left bar!</p>\n";echo"\t\t</div>\n\n";echo"\t\t<div class='right-column'>\n";echo"\t\t\t<p>This is a right bar!</p>\n";echo"\t\t</div>\n";Spaceless::end();echo"\t</div>\n";Spaceless::end();echo"\t<p>Bye!</p>\n";echo"</body>\n";$expected="<body>\n<div class='wrapper'><div class='left-column'><p>This is a left bar!</p>"."</div><div class='right-column'><p>This is a right bar!</p></div></div>\t<p>Bye!</p>\n</body>\n";$this->assertEquals($expected,ob_get_clean());}}