src/testcases/org/apache/poi/hssf/usermodel/TestHSSFSheetUpdateArrayFormulas.java

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package org.apache.poi.hssf.usermodel;

import junit.framework.AssertionFailedError;

import org.apache.poi.hssf.HSSFITestDataProvider;
import org.apache.poi.hssf.record.ArrayRecord;
import org.apache.poi.hssf.record.FormulaRecord;
import org.apache.poi.hssf.record.Record;
import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate;
import org.apache.poi.hssf.record.aggregates.RowRecordsAggregate;
import org.apache.poi.hssf.record.aggregates.SharedValueManager;
import org.apache.poi.hssf.record.aggregates.TestSharedValueManager;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;

/**
 * Test array formulas in HSSF
 *
 * @author Yegor Kozlov
 * @author Josh Micich
 */
public final class TestHSSFSheetUpdateArrayFormulas extends BaseTestSheetUpdateArrayFormulas {

    public TestHSSFSheetUpdateArrayFormulas() {
        super(HSSFITestDataProvider.instance);
    }

    // Test methods common with XSSF are in superclass
    // Local methods here test HSSF-specific details of updating array formulas

    public void testHSSFSetArrayFormula_singleCell() {
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet("Sheet1");

        CellRangeAddress range = new CellRangeAddress(2, 2, 2, 2);
        HSSFCell[] cells = sheet.setArrayFormula("SUM(C11:C12*D11:D12)", range).getFlattenedCells();
        assertEquals(1, cells.length);

        // sheet.setArrayFormula creates rows and cells for the designated range
        assertNotNull(sheet.getRow(2));
        HSSFCell cell = sheet.getRow(2).getCell(2);
        assertNotNull(cell);

        assertTrue(cell.isPartOfArrayFormulaGroup());
        //retrieve the range and check it is the same
        assertEquals(range.formatAsString(), cell.getArrayFormulaRange().formatAsString());

        FormulaRecordAggregate agg = (FormulaRecordAggregate)cell.getCellValueRecord();
        assertEquals(range.formatAsString(), agg.getArrayFormulaRange().formatAsString());
        assertTrue(agg.isPartOfArrayFormula());
    }

    /**
     * Makes sure the internal state of HSSFSheet is consistent after removing array formulas
     */
    public void testAddRemoveArrayFormulas_recordUpdates() {
        HSSFWorkbook wb = new HSSFWorkbook();
        HSSFSheet s = wb.createSheet("Sheet1");

        CellRange<HSSFCell> cr = s.setArrayFormula("123", CellRangeAddress.valueOf("B5:C6"));
        Record[] recs;
        int ix;
        recs = RecordInspector.getRecords(s, 0);
        ix = findRecordOfType(recs, ArrayRecord.class, 0);
        confirmRecordClass(recs, ix-1, FormulaRecord.class);
        confirmRecordClass(recs, ix+1, FormulaRecord.class);
        confirmRecordClass(recs, ix+2, FormulaRecord.class);
        confirmRecordClass(recs, ix+3, FormulaRecord.class);
        // just one array record
        assertTrue(findRecordOfType(recs, ArrayRecord.class, ix+1) < 0);

        s.removeArrayFormula(cr.getTopLeftCell());

        // Make sure the array formula has been removed properly

        recs = RecordInspector.getRecords(s, 0);
        assertTrue(findRecordOfType(recs, ArrayRecord.class, 0) < 0);
        assertTrue(findRecordOfType(recs, FormulaRecord.class, 0) < 0);
        RowRecordsAggregate rra = s.getSheet().getRowsAggregate();
        SharedValueManager svm = TestSharedValueManager.extractFromRRA(rra);
        if (svm.getArrayRecord(4, 1) != null) {
            throw new AssertionFailedError("Array record was not cleaned up properly.");
        }
    }

    private static void confirmRecordClass(Record[] recs, int index, Class<? extends Record> cls) {
        if (recs.length <= index) {
            throw new AssertionFailedError("Expected (" + cls.getName() + ") at index "
                    + index + " but array length is " + recs.length + ".");
        }
        assertEquals(cls, recs[index].getClass());
    }
    /**
     * @return <tt>-1<tt> if not found
     */
    private static int findRecordOfType(Record[] recs, Class<?> type, int fromIndex) {
        for (int i=fromIndex; i<recs.length; i++) {
            if (type.isInstance(recs[i])) {
                return i;
            }
        }
        return -1;
    }
}