log4j/src/scratchpad/testcases/org/apache/poi/hwpf/usermodel/TestBug47563.java

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package org.apache.poi.hwpf.usermodel;

import static org.junit.jupiter.api.Assertions.assertTrue;

import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Stream;

import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.HWPFTestDataSamples;
import org.apache.poi.util.HexDump;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;

/**
 * Bug 47563 - Exception when working with table
 */
public class TestBug47563 {


	public static Stream<Arguments> data() {
		List<Arguments> data = new ArrayList<>();

		data.add(Arguments.of( 1, 5 ));
		data.add(Arguments.of( 1, 6 ));
		data.add(Arguments.of( 5, 1 ));
		data.add(Arguments.of( 6, 1 ));
		data.add(Arguments.of( 2, 2 ));
		data.add(Arguments.of( 3, 2 ));
		data.add(Arguments.of( 2, 3 ));
		data.add(Arguments.of( 3, 3 ));

		return data.stream();
	}

	@ParameterizedTest
	@MethodSource("data")
	void test(int rows, int columns) throws Exception {
		// POI apparently can't create a document from scratch,
		// so we need an existing empty dummy document
		try (HWPFDocument doc = HWPFTestDataSamples.openSampleFile("empty.doc")) {
			Range range = doc.getRange();
			range.sanityCheck();

			Table table = range.insertTableBefore((short) columns, rows);
			table.sanityCheck();

			for (int rowIdx = 0; rowIdx < table.numRows(); rowIdx++) {
				TableRow row = table.getRow(rowIdx);
				row.sanityCheck();

				for (int colIdx = 0; colIdx < row.numCells(); colIdx++) {
					TableCell cell = row.getCell(colIdx);
					cell.sanityCheck();

					Paragraph par = cell.getParagraph(0);
					par.sanityCheck();

					par.insertBefore("" + (rowIdx * row.numCells() + colIdx));
					par.sanityCheck();

					row.sanityCheck();
					table.sanityCheck();
					range.sanityCheck();
				}
			}

			String text = range.text();
			String textBytes = HexDump.toHex(text.getBytes(StandardCharsets.UTF_8));
			int mustBeAfter = 0;
			for (int i = 0; i < rows * columns; i++) {
				int next = text.indexOf(Integer.toString(i), mustBeAfter);
				assertTrue( next != -1, "Test with " + rows + "/" + columns + ": Should find " + i +
					" but did not find it (" + next + ") with " + mustBeAfter + " in " + textBytes + "\n" + next);
				mustBeAfter = next;
			}
		}
	}
}