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Bug 58113: Fix regression: NullPointerException when setting cell value to null 

add unit tests which verifies this for all three SS-implementations

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1690652 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Dominik Stadler 2015-07-13 12:17:52 +00:00
parent 1c69d7596c
commit bae4602fa6
2 changed files with 49 additions and 7 deletions
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2
src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFCell.java
View File

@ -248,7 +248,7 @@ public class SXSSFCell implements Cell
{
ensureTypeOrFormulaType(CELL_TYPE_STRING);
if(value.length() > SpreadsheetVersion.EXCEL2007.getMaxTextLength()){
if(value != null && value.length() > SpreadsheetVersion.EXCEL2007.getMaxTextLength()){
throw new IllegalArgumentException("The maximum length of cell contents (text) is 32,767 characters");
}

54
src/testcases/org/apache/poi/ss/usermodel/BaseTestBugzillaIssues.java
View File

@ -32,6 +32,7 @@ import org.apache.poi.hssf.util.PaneInformation;
import org.apache.poi.ss.ITestDataProvider;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.util.CellRangeAddress;
import org.junit.Ignore;
import org.junit.Test;
/**
@ -419,16 +420,16 @@ public abstract class BaseTestBugzillaIssues {
Workbook wb = _testDataProvider.createWorkbook();
Sheet sheet = wb.createSheet("My sheet");
Row row = sheet.createRow( 0 );
Cell cell = row.createCell( 0 );
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellFormula(hyperlinkF);
assertEquals(hyperlinkF, cell.getCellFormula());
wb = _testDataProvider.writeOutAndReadBack(wb);
sheet = wb.getSheet("My Sheet");
row = sheet.getRow( 0 );
cell = row.getCell( 0 );
row = sheet.getRow(0);
cell = row.getCell(0);
assertEquals(hyperlinkF, cell.getCellFormula());
}
@ -691,7 +692,8 @@ public abstract class BaseTestBugzillaIssues {
* TODO Fix this to evaluate for XSSF
* TODO Fix this to work at all for HSSF
*/
// @Test
@Ignore("Fix this to evaluate for XSSF, Fix this to work at all for HSSF")
@Test
public void bug46670() throws Exception {
Workbook wb = _testDataProvider.createWorkbook();
Sheet s = wb.createSheet();
@ -730,7 +732,7 @@ public abstract class BaseTestBugzillaIssues {
assertEquals(refHttp, c2.getCellFormula());
// Try to evalutate, without giving a way to get at the other file
// Try to evaluate, without giving a way to get at the other file
try {
evaluateCell(wb, c1);
fail("Shouldn't be able to evaluate without the other file");
@ -1003,4 +1005,44 @@ public abstract class BaseTestBugzillaIssues {
fail();
} catch(IllegalStateException e) {}
}
@Test
public void test58113() {
Workbook wb = _testDataProvider.createWorkbook();
Sheet sheet = wb.createSheet( "Test" );
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
// verify that null-values can be set, this was possible up to 3.11, but broken in 3.12
cell.setCellValue((String)null);
String value = cell.getStringCellValue();
assertTrue("HSSF will currently return empty string, XSSF/SXSSF will return null, but had: " + value,
value == null || value.length() == 0);
cell = row.createCell(1);
// also verify that setting formulas to null works
cell.setCellType(Cell.CELL_TYPE_FORMULA);
cell.setCellValue((String)null);
wb.getCreationHelper().createFormulaEvaluator().evaluateAll();
value = cell.getStringCellValue();
assertTrue("HSSF will currently return empty string, XSSF/SXSSF will return null, but had: " + value,
value == null || value.length() == 0);
// set some value
cell.setCellType(Cell.CELL_TYPE_STRING);
cell.setCellValue("somevalue");
value = cell.getStringCellValue();
assertTrue("can set value afterwards: " + value,
value.equals("somevalue"));
// verify that the null-value is actually set even if there was some value in the cell before
cell.setCellValue((String)null);
value = cell.getStringCellValue();
assertTrue("HSSF will currently return empty string, XSSF/SXSSF will return null, but had: " + value,
value == null || value.length() == 0);
}
}