### Question:
CSVFileSchemaParser implements FileSchemaParser { public void setAutoDetect(boolean autoDetect) { this.autoDetect = autoDetect; }  @Override Schema parse(InputStream is, Charset charset, TableSchemaType target); TableSettings parseTableSettings(InputStream is, Charset charset, TableSchemaType target); boolean tableSettingsRequireFileInspection(); @Override TableSettings deriveTableSettings(TableSchemaType target); String deriveHiveRecordFormat(); void setAutoDetect(boolean autoDetect); void setHeaderRow(boolean headerRow); void setNumRowsToSample(int numRowsToSample); String getSeparatorChar(); void setSeparatorChar(String separatorChar); String getQuoteChar(); void setQuoteChar(String quoteChar); String getEscapeChar(); void setEscapeChar(String escapeChar);  }### Answer:
@Test public void testEmbeddedCommasNoAutodetect() throws Exception { parser.setAutoDetect(false); validateSchema1("col1,col2,col3\n\"Edoceo, Inc.\",Seattle,WA\nfoo,bar,fee"); }
@Test public void testCSVWinFile() throws Exception { parser.setAutoDetect(true); validateSchema2("MOCK_DATA.csv_win.txt"); }
@Test public void testExcel() throws Exception { parser.setAutoDetect(true); validateSchema2("MOCK_DATA.csv_excel.txt"); }
@Test public void testEmptyStream() throws Exception { parser.setAutoDetect(true); try { validateSchema2("missingfile.txt"); fail("Expecting error for missing file or empty stream"); } catch (NullPointerException e) { } }
@Test public void testNoDelimFound() throws Exception { parser.setAutoDetect(true); try (InputStream is = CSVFileSchemaParserTest.class.getClassLoader().getResourceAsStream("junk.txt")) { try { HiveTableSchema schema = toHiveTableSchema(is); fail("Expecting unrecognized format"); } catch (IOException e) { checkInvalidFormatException(e); } } }