testcfrecordsaggregate.java

来自「EXCEL read and write」· Java 代码 · 共 129 行

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package org.apache.poi.hssf.record.aggregates;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

import org.apache.poi.hssf.model.RecordStream;
import org.apache.poi.hssf.record.CFHeaderRecord;
import org.apache.poi.hssf.record.CFRuleRecord;
import org.apache.poi.hssf.record.RecordFactory;
import org.apache.poi.hssf.record.CFRuleRecord.ComparisonOperator;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.CellRangeAddress;
import org.apache.poi.util.LittleEndian;

/**
 * Tests the serialization and deserialization of the CFRecordsAggregate
 * class works correctly.  
 *
 * @author Dmitriy Kumshayev 
 */
public final class TestCFRecordsAggregate extends TestCase
{

	public void testCFRecordsAggregate() 
	{
		HSSFWorkbook workbook = new HSSFWorkbook();
		List recs = new ArrayList();
		CFHeaderRecord header = new CFHeaderRecord();
		CFRuleRecord rule1 = CFRuleRecord.create(workbook, "7");
		CFRuleRecord rule2 = CFRuleRecord.create(workbook, ComparisonOperator.BETWEEN, "2", "5");
		CFRuleRecord rule3 = CFRuleRecord.create(workbook, ComparisonOperator.GE, "100", null);
		header.setNumberOfConditionalFormats(3);
		CellRangeAddress[] cellRanges = {
				new CellRangeAddress(0,1,0,0),
				new CellRangeAddress(0,1,2,2),
		};
		header.setCellRanges(cellRanges);
		recs.add(header);
		recs.add(rule1);
		recs.add(rule2);
		recs.add(rule3);
		CFRecordsAggregate record;
		record = CFRecordsAggregate.createCFAggregate(new RecordStream(recs, 0));

		// Serialize
		byte [] serializedRecord = new byte[record.getRecordSize()];
		record.serialize(0, serializedRecord);
		InputStream in = new ByteArrayInputStream(serializedRecord);

		//Parse
		recs = RecordFactory.createRecords(in);

		// Verify
		assertNotNull(recs);
		assertEquals(4, recs.size());

		header = (CFHeaderRecord)recs.get(0);
		rule1 = (CFRuleRecord)recs.get(1);
		rule2 = (CFRuleRecord)recs.get(2);
		rule3 = (CFRuleRecord)recs.get(3);
		cellRanges = header.getCellRanges();

		assertEquals(2, cellRanges.length);
		assertEquals(3, header.getNumberOfConditionalFormats());

		record = CFRecordsAggregate.createCFAggregate(new RecordStream(recs, 0));

		record = record.cloneCFAggregate();

		assertNotNull(record.getHeader());
		assertEquals(3,record.getNumberOfRules());

		header = record.getHeader();
		rule1 = record.getRule(0);
		rule2 = record.getRule(1);
		rule3 = record.getRule(2);
		cellRanges = header.getCellRanges();

		assertEquals(2, cellRanges.length);
		assertEquals(3, header.getNumberOfConditionalFormats());
	}
	
	/**
	 * Make sure that the CF Header record is properly updated with the number of rules
	 */
	public void testNRules() {
		HSSFWorkbook workbook = new HSSFWorkbook();
		CellRangeAddress[] cellRanges = {
				new CellRangeAddress(0,1,0,0),
				new CellRangeAddress(0,1,2,2),
		};
		CFRuleRecord[] rules = {
			CFRuleRecord.create(workbook, "7"),
			CFRuleRecord.create(workbook, ComparisonOperator.BETWEEN, "2", "5"),
		};
		CFRecordsAggregate agg = new CFRecordsAggregate(cellRanges, rules);
		byte[] serializedRecord = new byte[agg.getRecordSize()];
		agg.serialize(0, serializedRecord);
		
		int nRules = LittleEndian.getUShort(serializedRecord, 4);
		if (nRules == 0) {
			throw new AssertionFailedError("Identified bug 45682 b");
		}
		assertEquals(rules.length, nRules);
	}
}