public function testGetLine()
 {
     $line0 = new CoveredLine("line0");
     $line1 = new CoveredLine("line1");
     $class = new CoveredClass();
     $class->addLine(0, $line0);
     $class->addLine(1, $line1);
     $this->assertEquals($line0, $class->getLine(0));
     $this->assertEquals($line1, $class->getLine(1));
 }