src/testcases/org/apache/poi/ss/usermodel/BaseTestRow.java

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
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   distributed under the License is distributed on an "AS IS" BASIS,
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   See the License for the specific language governing permissions and
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package org.apache.poi.ss.usermodel;

import java.io.IOException;
import java.util.Iterator;

import junit.framework.TestCase;

import org.apache.poi.ss.ITestDataProvider;

/**
 * A base class for testing implementations of
 * {@link org.apache.poi.ss.usermodel.Row}
 */
public abstract class BaseTestRow extends TestCase {

    private final ITestDataProvider _testDataProvider;

    protected BaseTestRow(ITestDataProvider testDataProvider) {
        _testDataProvider = testDataProvider;
    }

    public void testLastAndFirstColumns() {
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet();
        Row row = sheet.createRow(0);
        assertEquals(-1, row.getFirstCellNum());
        assertEquals(-1, row.getLastCellNum());

        //getting cells from an empty row should returns null
        for(int i=0; i < 10; i++) assertNull(row.getCell(i));

        row.createCell(2);
        assertEquals(2, row.getFirstCellNum());
        assertEquals(3, row.getLastCellNum());

        row.createCell(1);
        assertEquals(1, row.getFirstCellNum());
        assertEquals(3, row.getLastCellNum());

        // check the exact case reported in 'bug' 43901 - notice that the cellNum is '0' based
        row.createCell(3);
        assertEquals(1, row.getFirstCellNum());
        assertEquals(4, row.getLastCellNum());
    }

    /**
     * Make sure that there is no cross-talk between rows especially with getFirstCellNum and getLastCellNum
     * This test was added in response to bug report 44987.
     */
    public void testBoundsInMultipleRows() {
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet();
        Row rowA = sheet.createRow(0);

        rowA.createCell(10);
        rowA.createCell(5);
        assertEquals(5, rowA.getFirstCellNum());
        assertEquals(11, rowA.getLastCellNum());

        Row rowB = sheet.createRow(1);
        rowB.createCell(15);
        rowB.createCell(30);
        assertEquals(15, rowB.getFirstCellNum());
        assertEquals(31, rowB.getLastCellNum());

        assertEquals(5, rowA.getFirstCellNum());
        assertEquals(11, rowA.getLastCellNum());
        rowA.createCell(50);
        assertEquals(51, rowA.getLastCellNum());

        assertEquals(31, rowB.getLastCellNum());
    }

    public void testRemoveCell() {
        Workbook workbook = _testDataProvider.createWorkbook();
        {
            Sheet sheet = workbook.createSheet();
            Row row = sheet.createRow(0);

            assertEquals(0, row.getPhysicalNumberOfCells());
            assertEquals(-1, row.getLastCellNum());
            assertEquals(-1, row.getFirstCellNum());

            row.createCell(1);
            assertEquals(2, row.getLastCellNum());
            assertEquals(1, row.getFirstCellNum());
            assertEquals(1, row.getPhysicalNumberOfCells());
            row.createCell(3);
            assertEquals(4, row.getLastCellNum());
            assertEquals(1, row.getFirstCellNum());
            assertEquals(2, row.getPhysicalNumberOfCells());
            row.removeCell(row.getCell(3));
            assertEquals(2, row.getLastCellNum());
            assertEquals(1, row.getFirstCellNum());
            assertEquals(1, row.getPhysicalNumberOfCells());
            row.removeCell(row.getCell(1));
            assertEquals(-1, row.getLastCellNum());
            assertEquals(-1, row.getFirstCellNum());
            assertEquals(0, row.getPhysicalNumberOfCells());
        }

        workbook = _testDataProvider.writeOutAndReadBack(workbook);

        {
            Sheet sheet = workbook.getSheetAt(0);
            Row row = sheet.getRow(0);
            assertEquals(-1, row.getLastCellNum());
            assertEquals(-1, row.getFirstCellNum());
            assertEquals(0, row.getPhysicalNumberOfCells());
        }
    }

    public void baseTestRowBounds(int maxRowNum) {
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet();
        //Test low row bound
        sheet.createRow(0);
        //Test low row bound exception
        try {
            sheet.createRow(-1);
            fail("expected exception");
        } catch (IllegalArgumentException e) {
            // expected during successful test
            assertTrue("Did not find expected error message, had: " + e, 
                    e.getMessage().startsWith("Invalid row number (-1)"));
        }

        //Test high row bound
        sheet.createRow(maxRowNum);
        //Test high row bound exception
        try {
            sheet.createRow(maxRowNum + 1);
            fail("expected exception");
        } catch (IllegalArgumentException e) {
            // expected during successful test
            assertEquals("Invalid row number ("+(maxRowNum + 1)+") outside allowable range (0.."+maxRowNum+")", e.getMessage());
        }
    }

    public void baseTestCellBounds(int maxCellNum) {
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet();

        Row row = sheet.createRow(0);
        //Test low cell bound
        try {
            row.createCell(-1);
            fail("expected exception");
        } catch (IllegalArgumentException e) {
            // expected during successful test
            assertTrue(e.getMessage().startsWith("Invalid column index (-1)"));
        }

        //Test high cell bound
        try {
            row.createCell(maxCellNum + 1);
            fail("expected exception");
        } catch (IllegalArgumentException e) {
            // expected during successful test
            assertTrue(e.getMessage().startsWith("Invalid column index ("+(maxCellNum+1)+")"));
        }
        for(int i=0; i < maxCellNum; i++){
            row.createCell(i);
        }
        assertEquals(maxCellNum, row.getPhysicalNumberOfCells());
        workbook = _testDataProvider.writeOutAndReadBack(workbook);
        sheet = workbook.getSheetAt(0);
        row = sheet.getRow(0);
        assertEquals(maxCellNum, row.getPhysicalNumberOfCells());
        for(int i=0; i < maxCellNum; i++){
            Cell cell = row.getCell(i);
            assertEquals(i, cell.getColumnIndex());
        }

    }

    /**
     * Prior to patch 43901, POI was producing files with the wrong last-column
     * number on the row
     */
    public void testLastCellNumIsCorrectAfterAddCell_bug43901(){
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet("test");
        Row row = sheet.createRow(0);

        // New row has last col -1
        assertEquals(-1, row.getLastCellNum());
        if(row.getLastCellNum() == 0) {
            fail("Identified bug 43901");
        }

        // Create two cells, will return one higher
        //  than that for the last number
        row.createCell(0);
        assertEquals(1, row.getLastCellNum());
        row.createCell(255);
        assertEquals(256, row.getLastCellNum());
    }

    /**
     * Tests for the missing/blank cell policy stuff
     */
    public void testGetCellPolicy() {
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet("test");
        Row row = sheet.createRow(0);

        // 0 -> string
        // 1 -> num
        // 2 missing
        // 3 missing
        // 4 -> blank
        // 5 -> num
        row.createCell(0).setCellValue("test");
        row.createCell(1).setCellValue(3.2);
        row.createCell(4, Cell.CELL_TYPE_BLANK);
        row.createCell(5).setCellValue(4);

        // First up, no policy given, uses default
        assertEquals(Cell.CELL_TYPE_STRING,  row.getCell(0).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1).getCellType());
        assertEquals(null, row.getCell(2));
        assertEquals(null, row.getCell(3));
        assertEquals(Cell.CELL_TYPE_BLANK,   row.getCell(4).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(5).getCellType());

        // RETURN_NULL_AND_BLANK - same as default
        assertEquals(Cell.CELL_TYPE_STRING,  row.getCell(0, Row.RETURN_NULL_AND_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1, Row.RETURN_NULL_AND_BLANK).getCellType());
        assertEquals(null, row.getCell(2, Row.RETURN_NULL_AND_BLANK));
        assertEquals(null, row.getCell(3, Row.RETURN_NULL_AND_BLANK));
        assertEquals(Cell.CELL_TYPE_BLANK,   row.getCell(4, Row.RETURN_NULL_AND_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(5, Row.RETURN_NULL_AND_BLANK).getCellType());

        // RETURN_BLANK_AS_NULL - nearly the same
        assertEquals(Cell.CELL_TYPE_STRING,  row.getCell(0, Row.RETURN_BLANK_AS_NULL).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1, Row.RETURN_BLANK_AS_NULL).getCellType());
        assertEquals(null, row.getCell(2, Row.RETURN_BLANK_AS_NULL));
        assertEquals(null, row.getCell(3, Row.RETURN_BLANK_AS_NULL));
        assertEquals(null, row.getCell(4, Row.RETURN_BLANK_AS_NULL));
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(5, Row.RETURN_BLANK_AS_NULL).getCellType());

        // CREATE_NULL_AS_BLANK - creates as needed
        assertEquals(Cell.CELL_TYPE_STRING,  row.getCell(0, Row.CREATE_NULL_AS_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1, Row.CREATE_NULL_AS_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_BLANK,   row.getCell(2, Row.CREATE_NULL_AS_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_BLANK,   row.getCell(3, Row.CREATE_NULL_AS_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_BLANK,   row.getCell(4, Row.CREATE_NULL_AS_BLANK).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(5, Row.CREATE_NULL_AS_BLANK).getCellType());

        // Check created ones get the right column
        assertEquals(0, row.getCell(0, Row.CREATE_NULL_AS_BLANK).getColumnIndex());
        assertEquals(1, row.getCell(1, Row.CREATE_NULL_AS_BLANK).getColumnIndex());
        assertEquals(2, row.getCell(2, Row.CREATE_NULL_AS_BLANK).getColumnIndex());
        assertEquals(3, row.getCell(3, Row.CREATE_NULL_AS_BLANK).getColumnIndex());
        assertEquals(4, row.getCell(4, Row.CREATE_NULL_AS_BLANK).getColumnIndex());
        assertEquals(5, row.getCell(5, Row.CREATE_NULL_AS_BLANK).getColumnIndex());


        // Now change the cell policy on the workbook, check
        //  that that is now used if no policy given
        workbook.setMissingCellPolicy(Row.RETURN_BLANK_AS_NULL);

        assertEquals(Cell.CELL_TYPE_STRING,  row.getCell(0).getCellType());
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(1).getCellType());
        assertEquals(null, row.getCell(2));
        assertEquals(null, row.getCell(3));
        assertEquals(null, row.getCell(4));
        assertEquals(Cell.CELL_TYPE_NUMERIC, row.getCell(5).getCellType());
    }

    public void testRowHeight() throws IOException {
        Workbook workbook = _testDataProvider.createWorkbook();
        Sheet sheet = workbook.createSheet();
        Row row1 = sheet.createRow(0);

        assertEquals(sheet.getDefaultRowHeight(), row1.getHeight());

        sheet.setDefaultRowHeightInPoints(20);
        row1.setHeight((short)-1); //reset the row height
        assertEquals(20.0f, row1.getHeightInPoints(), 0F);
        assertEquals(20*20, row1.getHeight());

        Row row2 = sheet.createRow(1);
        assertEquals(sheet.getDefaultRowHeight(), row2.getHeight());
        row2.setHeight((short)310);
        assertEquals(310, row2.getHeight());
        assertEquals(310F/20, row2.getHeightInPoints(), 0F);

        Row row3 = sheet.createRow(2);
        row3.setHeightInPoints(25.5f);
        assertEquals((short)(25.5f*20), row3.getHeight());
        assertEquals(25.5f, row3.getHeightInPoints(), 0F);

        Row row4 = sheet.createRow(3);
        assertFalse(row4.getZeroHeight());
        row4.setZeroHeight(true);
        assertTrue(row4.getZeroHeight());

        workbook = _testDataProvider.writeOutAndReadBack(workbook);
        sheet = workbook.getSheetAt(0);

        row1 = sheet.getRow(0);
        row2 = sheet.getRow(1);
        row3 = sheet.getRow(2);
        row4 = sheet.getRow(3);
        assertEquals(20.0f, row1.getHeightInPoints(), 0F);
        assertEquals(20*20, row1.getHeight());

        assertEquals(310, row2.getHeight());
        assertEquals(310F/20, row2.getHeightInPoints(), 0F);

        assertEquals((short)(25.5f*20), row3.getHeight());
        assertEquals(25.5f, row3.getHeightInPoints(), 0F);

        assertFalse(row1.getZeroHeight());
        assertFalse(row2.getZeroHeight());
        assertFalse(row3.getZeroHeight());
        assertTrue(row4.getZeroHeight());
    }

    /**
     * Test adding cells to a row in various places and see if we can find them again.
     */
    public void testCellIterator() {
        Workbook wb = _testDataProvider.createWorkbook();
        Sheet sheet = wb.createSheet();
        Row row = sheet.createRow(0);

        // One cell at the beginning
        Cell cell1 = row.createCell(1);
        Iterator<Cell> it = row.cellIterator();
        assertTrue(it.hasNext());
        assertTrue(cell1 == it.next());
        assertFalse(it.hasNext());

        // Add another cell at the end
        Cell cell2 = row.createCell(99);
        it = row.cellIterator();
        assertTrue(it.hasNext());
        assertTrue(cell1 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell2 == it.next());

        // Add another cell at the beginning
        Cell cell3 = row.createCell(0);
        it = row.cellIterator();
        assertTrue(it.hasNext());
        assertTrue(cell3 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell1 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell2 == it.next());

        // Replace cell1
        Cell cell4 = row.createCell(1);
        it = row.cellIterator();
        assertTrue(it.hasNext());
        assertTrue(cell3 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell4 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell2 == it.next());
        assertFalse(it.hasNext());

        // Add another cell, specifying the cellType
        Cell cell5 = row.createCell(2, Cell.CELL_TYPE_STRING);
        it = row.cellIterator();
        assertNotNull(cell5);
        assertTrue(it.hasNext());
        assertTrue(cell3 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell4 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell5 == it.next());
        assertTrue(it.hasNext());
        assertTrue(cell2 == it.next());
        assertEquals(Cell.CELL_TYPE_STRING, cell5.getCellType());
    }

    public void testRowStyle() {
       Workbook workbook = _testDataProvider.createWorkbook();
       Sheet sheet = workbook.createSheet("test");
       Row row1 = sheet.createRow(0);
       Row row2 = sheet.createRow(1);

       // Won't be styled currently
       assertEquals(false, row1.isFormatted());
       assertEquals(false, row2.isFormatted());
       assertEquals(null, row1.getRowStyle());
       assertEquals(null, row2.getRowStyle());

       // Style one
       CellStyle style = workbook.createCellStyle();
       style.setDataFormat((short)4);
       row2.setRowStyle(style);

       // Check
       assertEquals(false, row1.isFormatted());
       assertEquals(true, row2.isFormatted());
       assertEquals(null, row1.getRowStyle());
       assertEquals(style, row2.getRowStyle());

       // Save, load and re-check
       workbook = _testDataProvider.writeOutAndReadBack(workbook);
       sheet = workbook.getSheetAt(0);

       row1 = sheet.getRow(0);
       row2 = sheet.getRow(1);
       style = workbook.getCellStyleAt(style.getIndex());

       assertEquals(false, row1.isFormatted());
       assertEquals(true, row2.isFormatted());
       assertEquals(null, row1.getRowStyle());
       assertEquals(style, row2.getRowStyle());
       assertEquals(4, style.getDataFormat());
    }
}