### Question:
Step2Model implements StepModel { public String getSampleBasedSampleSizeRegEx() { return sampleBasedSampleSizeRegEx; } Step2Model(final String csvFileContent, final int csvFileRowCount); int getCsvFileRowRount(); Step2Model setCsvFileRowRount(final int csvFileRowRount); String getColumnSeparator(); Step2Model setColumnSeparator(final String selectedColumnSeparator); String getCommentIndicator(); Step2Model setCommentIndicator(final String selectedCommentIndicator); int getFirstLineWithData(); Step2Model setFirstLineWithData(final int firstLineWithData); String getTextQualifier(); Step2Model setTextQualifier(final String selectedTextQualifier); String getCSVFileContent(); Step2Model setCSVFileContent(final String cSVFileContent); boolean isUseHeader(); Step2Model setUseHeader(final boolean useHeader); char getDecimalSeparator(); Step2Model setDecimalSeparator(final char decimalSeparator); boolean isSampleBased(); Step2Model setSampleBased(final boolean isSampleBased); Step2Model setSampleBasedStartRegEx(final String sampleBasedStartRegEx); String getSampleBasedStartRegEx(); Step2Model setSampleBasedDateOffset(final int dateOffset); int getSampleBasedDateOffset(); Step2Model setSampleBasedDateExtractionRegEx(final String sampleBasedDateExtractionRegEx); String getSampleBasedDateExtractionRegEx(); Step2Model setSampleBasedDatePattern(final String sampleBasedDateDatePattern); String getSampleBasedDatePattern(); Step2Model setSampleBasedDataOffset(final int dataOffset); int getSampleBasedDataOffset(); Step2Model setSampleBasedSampleSizeOffset(final int sampleSizeOffset); int getSampleBasedSampleSizeOffset(); Step2Model setSampleBasedSampleSizeRegEx(final String sampleBasedSampleSizeRegEx); String getSampleBasedSampleSizeRegEx();  }### Answer:
@Test public void shouldReturnEmptyStringAsDefaultValueForSampleBasedSampleSizeRegEx() { assertThat(model.getSampleBasedSampleSizeRegEx(), is("")); }