testarrayptg.java

来自「EXCEL read and write」· Java 代码 · 共 157 行

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

import java.util.Arrays;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.RecordInputStream;
import org.apache.poi.hssf.record.TestcaseRecordInputStream;
import org.apache.poi.hssf.record.UnicodeString;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
/**
 * Tests for <tt>ArrayPtg</tt>
 * 
 * @author Josh Micich
 */
public final class TestArrayPtg extends TestCase {

	private static final byte[] ENCODED_PTG_DATA = {
		0x40,
		0, 0, 0, 0, 0, 0, 0, 
	};
	private static final byte[] ENCODED_CONSTANT_DATA = {
		2,    // 3 columns
		1, 0, // 2 rows
		4, 1, 0, 0, 0, 0, 0, 0, 0, // TRUE
		2, 4, 0, 0, 65, 66, 67, 68, // "ABCD"
		2, 1, 0, 0, 69, // "E"
		1, 0, 0, 0, 0, 0, 0, 0, 0, // 0
		4, 0, 0, 0, 0, 0, 0, 0, 0, // FALSE
		2, 2, 0, 0, 70, 71, // "FG"
	};

	/**
	 * Lots of problems with ArrayPtg's encoding of 
	 */
	public void testReadWriteTokenValueBytes() {
		
		ArrayPtg ptg = new ArrayPtg(TestcaseRecordInputStream.createWithFakeSid(ENCODED_PTG_DATA));
		
		ptg.readTokenValues(TestcaseRecordInputStream.createWithFakeSid(ENCODED_CONSTANT_DATA));
		assertEquals(3, ptg.getColumnCount());
		assertEquals(2, ptg.getRowCount());
		Object[][] values = ptg.getTokenArrayValues();
		assertEquals(2, values.length);
		
		
		assertEquals(Boolean.TRUE, values[0][0]);
		assertEquals(new UnicodeString("ABCD"), values[0][1]);
		assertEquals(new Double(0), values[1][0]);
		assertEquals(Boolean.FALSE, values[1][1]);
		assertEquals(new UnicodeString("FG"), values[1][2]);
		
		byte[] outBuf = new byte[ENCODED_CONSTANT_DATA.length];
		ptg.writeTokenValueBytes(outBuf, 0);
		
		if(outBuf[0] == 4) {
			throw new AssertionFailedError("Identified bug 42564b");
		}
		assertTrue(Arrays.equals(ENCODED_CONSTANT_DATA, outBuf));
	}

	/**
	 * Excel stores array elements column by column.  This test makes sure POI does the same.
	 */
	public void testElementOrdering() {
		ArrayPtg ptg = new ArrayPtg(TestcaseRecordInputStream.createWithFakeSid(ENCODED_PTG_DATA));
		ptg.readTokenValues(TestcaseRecordInputStream.createWithFakeSid(ENCODED_CONSTANT_DATA));
		assertEquals(3, ptg.getColumnCount());
		assertEquals(2, ptg.getRowCount());
		
		assertEquals(0, ptg.getValueIndex(0, 0));
		assertEquals(1, ptg.getValueIndex(1, 0));
		assertEquals(2, ptg.getValueIndex(2, 0));
		assertEquals(3, ptg.getValueIndex(0, 1));
		assertEquals(4, ptg.getValueIndex(1, 1));
		assertEquals(5, ptg.getValueIndex(2, 1));
	}
	
	/**
	 * Test for a bug which was temporarily introduced by the fix for bug 42564.
	 * A spreadsheet was added to make the ordering clearer.
	 */
	public void testElementOrderingInSpreadsheet() {
		HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("ex42564-elementOrder.xls");

		// The formula has an array with 3 rows and 5 columns 
		String formula = wb.getSheetAt(0).getRow(0).getCell(0).getCellFormula();
		// TODO - These number literals should not have '.0'. Excel has different number rendering rules

		if (formula.equals("SUM({1.0,6.0,11.0;2.0,7.0,12.0;3.0,8.0,13.0;4.0,9.0,14.0;5.0,10.0,15.0})")) {
			throw new AssertionFailedError("Identified bug 42564 b");
		}
		assertEquals("SUM({1.0,2.0,3.0,4.0,5.0;6.0,7.0,8.0,9.0,10.0;11.0,12.0,13.0,14.0,15.0})", formula);
	}

	public void testToFormulaString() {
		ArrayPtg ptg = new ArrayPtg(TestcaseRecordInputStream.createWithFakeSid(ENCODED_PTG_DATA));
		
		ptg.readTokenValues(TestcaseRecordInputStream.createWithFakeSid(ENCODED_CONSTANT_DATA));
		
		String actualFormula;
		try {
			actualFormula = ptg.toFormulaString();
		} catch (IllegalArgumentException e) {
			if (e.getMessage().equals("Unexpected constant class (java.lang.Boolean)")) {
				throw new AssertionFailedError("Identified bug 45380");
			}
			throw e;
		}
		assertEquals("{TRUE,\"ABCD\",\"E\";0.0,FALSE,\"FG\"}", actualFormula);
	}
	
	/**
	 * worth checking since AttrPtg.sid=0x20 and Ptg.CLASS_* = (0x00, 0x20, and 0x40)
	 */
	public void testOperandClassDecoding() {
		confirmOperandClassDecoding(Ptg.CLASS_REF);
		confirmOperandClassDecoding(Ptg.CLASS_VALUE);
		confirmOperandClassDecoding(Ptg.CLASS_ARRAY);
	}

	private static void confirmOperandClassDecoding(byte operandClass) {
		byte[] fullData = new byte[ENCODED_PTG_DATA.length + ENCODED_CONSTANT_DATA.length];
		System.arraycopy(ENCODED_PTG_DATA, 0, fullData, 0, ENCODED_PTG_DATA.length);
		System.arraycopy(ENCODED_CONSTANT_DATA, 0, fullData, ENCODED_PTG_DATA.length, ENCODED_CONSTANT_DATA.length);

		// Force encoded operand class for tArray 
		fullData[0] = (byte) (ArrayPtg.sid + operandClass);
		
		RecordInputStream in = TestcaseRecordInputStream.createWithFakeSid(fullData);
		
		Ptg[] ptgs = Ptg.readTokens(ENCODED_PTG_DATA.length, in);
		assertEquals(1, ptgs.length);
		ArrayPtg aPtg = (ArrayPtg) ptgs[0];
		assertEquals(operandClass, aPtg.getPtgClass());
	}
}