jgit/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/RawParseUtils_LineMapTest.java

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package org.eclipse.jgit.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.io.UnsupportedEncodingException;

import org.junit.Test;

public class RawParseUtils_LineMapTest {
	@Test
	public void testEmpty() {
		final IntList map = RawParseUtils.lineMap(new byte[] {}, 0, 0);
		assertNotNull(map);
		assertEquals(2, map.size());
		assertEquals(Integer.MIN_VALUE, map.get(0));
		assertEquals(0, map.get(1));
	}

	@Test
	public void testOneBlankLine() {
		final IntList map = RawParseUtils.lineMap(new byte[] { '\n' }, 0, 1);
		assertEquals(3, map.size());
		assertEquals(Integer.MIN_VALUE, map.get(0));
		assertEquals(0, map.get(1));
		assertEquals(1, map.get(2));
	}

	@Test
	public void testTwoLineFooBar() throws UnsupportedEncodingException {
		final byte[] buf = "foo\nbar\n".getBytes("ISO-8859-1");
		final IntList map = RawParseUtils.lineMap(buf, 0, buf.length);
		assertEquals(4, map.size());
		assertEquals(Integer.MIN_VALUE, map.get(0));
		assertEquals(0, map.get(1));
		assertEquals(4, map.get(2));
		assertEquals(buf.length, map.get(3));
	}

	@Test
	public void testTwoLineNoLF() throws UnsupportedEncodingException {
		final byte[] buf = "foo\nbar".getBytes("ISO-8859-1");
		final IntList map = RawParseUtils.lineMap(buf, 0, buf.length);
		assertEquals(4, map.size());
		assertEquals(Integer.MIN_VALUE, map.get(0));
		assertEquals(0, map.get(1));
		assertEquals(4, map.get(2));
		assertEquals(buf.length, map.get(3));
	}

	@Test
	public void testFourLineBlanks() throws UnsupportedEncodingException {
		final byte[] buf = "foo\n\n\nbar\n".getBytes("ISO-8859-1");
		final IntList map = RawParseUtils.lineMap(buf, 0, buf.length);
		assertEquals(6, map.size());
		assertEquals(Integer.MIN_VALUE, map.get(0));
		assertEquals(0, map.get(1));
		assertEquals(4, map.get(2));
		assertEquals(5, map.get(3));
		assertEquals(6, map.get(4));
		assertEquals(buf.length, map.get(5));
	}
}