YXRoXTwvc3Bhbj48c2NyaXB0IHR5cGU9Im1hdGgvdGV4Ij5jID0gMzA8L3NjcmlwdD4uCgo8UD4= " base64 = "1" >Hint: </a> bar'; $expected = 'foo bar'; $pf = new \WeBWorK\Server\Util\ProblemFormatter(); $this->assertSame($expected, $pf->strip_knowls($text)); } public function test_convert_anchors()