string $progress:
protected function writeProgress($progress) {
$this
->write($progress);
$this->column++;
$this->numTestsRun++;
if ($this->column == $this->maxColumn) {
$this
->write(sprintf(' %' . $this->numTestsWidth . 'd / %' . $this->numTestsWidth . 'd (%3s%%)', $this->numTestsRun, $this->numTests, floor($this->numTestsRun / $this->numTests * 100)));
$this
->writeNewLine();
}
}