    protected function assertCsvUploaded ($csv) {
        $uploadedPath = implode(DIRECTORY_SEPARATOR, array(
            Yii::app()->basePath,
            'data',
            'data.csv'
        ));
        $this->assertFileExists ($uploadedPath);
        $this->assertFileEquals ($csv, $uploadedPath);
    }
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.