jgit/org.eclipse.jgit.test/tst/org/eclipse/jgit/notes/LeafBucketTest.java

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 * This program and the accompanying materials are made available
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package org.eclipse.jgit.notes;

import java.io.IOException;

import junit.framework.TestCase;

import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.MutableObjectId;

public class LeafBucketTest extends TestCase {
	public void testEmpty() {
		LeafBucket b = new LeafBucket(0);
		assertNull(b.get(id(0x00), null));
		assertNull(b.get(id(0x01), null));
		assertNull(b.get(id(0xfe), null));
	}

	public void testParseFive() {
		LeafBucket b = new LeafBucket(0);

		b.parseOneEntry(id(0x11), id(0x81));
		b.parseOneEntry(id(0x22), id(0x82));
		b.parseOneEntry(id(0x33), id(0x83));
		b.parseOneEntry(id(0x44), id(0x84));
		b.parseOneEntry(id(0x55), id(0x85));

		assertNull(b.get(id(0x01), null));
		assertEquals(id(0x81), b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertEquals(id(0x83), b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertEquals(id(0x85), b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testSetFive_InOrder() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertSame(b, b.set(id(0x22), id(0x82), null));
		assertSame(b, b.set(id(0x33), id(0x83), null));
		assertSame(b, b.set(id(0x44), id(0x84), null));
		assertSame(b, b.set(id(0x55), id(0x85), null));

		assertNull(b.get(id(0x01), null));
		assertEquals(id(0x81), b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertEquals(id(0x83), b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertEquals(id(0x85), b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testSetFive_ReverseOrder() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x55), id(0x85), null));
		assertSame(b, b.set(id(0x44), id(0x84), null));
		assertSame(b, b.set(id(0x33), id(0x83), null));
		assertSame(b, b.set(id(0x22), id(0x82), null));
		assertSame(b, b.set(id(0x11), id(0x81), null));

		assertNull(b.get(id(0x01), null));
		assertEquals(id(0x81), b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertEquals(id(0x83), b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertEquals(id(0x85), b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testSetFive_MixedOrder() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertSame(b, b.set(id(0x33), id(0x83), null));
		assertSame(b, b.set(id(0x55), id(0x85), null));

		assertSame(b, b.set(id(0x22), id(0x82), null));
		assertSame(b, b.set(id(0x44), id(0x84), null));

		assertNull(b.get(id(0x01), null));
		assertEquals(id(0x81), b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertEquals(id(0x83), b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertEquals(id(0x85), b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testSet_Replace() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertEquals(id(0x81), b.get(id(0x11), null));

		assertSame(b, b.set(id(0x11), id(0x01), null));
		assertEquals(id(0x01), b.get(id(0x11), null));
	}

	public void testRemoveMissingNote() throws IOException {
		LeafBucket b = new LeafBucket(0);
		assertNull(b.get(id(0x11), null));
		assertSame(b, b.set(id(0x11), null, null));
		assertNull(b.get(id(0x11), null));
	}

	public void testRemoveFirst() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertSame(b, b.set(id(0x22), id(0x82), null));
		assertSame(b, b.set(id(0x33), id(0x83), null));
		assertSame(b, b.set(id(0x44), id(0x84), null));
		assertSame(b, b.set(id(0x55), id(0x85), null));

		assertSame(b, b.set(id(0x11), null, null));

		assertNull(b.get(id(0x01), null));
		assertNull(b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertEquals(id(0x83), b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertEquals(id(0x85), b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testRemoveMiddle() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertSame(b, b.set(id(0x22), id(0x82), null));
		assertSame(b, b.set(id(0x33), id(0x83), null));
		assertSame(b, b.set(id(0x44), id(0x84), null));
		assertSame(b, b.set(id(0x55), id(0x85), null));

		assertSame(b, b.set(id(0x33), null, null));

		assertNull(b.get(id(0x01), null));
		assertEquals(id(0x81), b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertNull(b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertEquals(id(0x85), b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testRemoveLast() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertSame(b, b.set(id(0x22), id(0x82), null));
		assertSame(b, b.set(id(0x33), id(0x83), null));
		assertSame(b, b.set(id(0x44), id(0x84), null));
		assertSame(b, b.set(id(0x55), id(0x85), null));

		assertSame(b, b.set(id(0x55), null, null));

		assertNull(b.get(id(0x01), null));
		assertEquals(id(0x81), b.get(id(0x11), null));
		assertEquals(id(0x82), b.get(id(0x22), null));
		assertEquals(id(0x83), b.get(id(0x33), null));
		assertEquals(id(0x84), b.get(id(0x44), null));
		assertNull(b.get(id(0x55), null));
		assertNull(b.get(id(0x66), null));
	}

	public void testRemoveMakesEmpty() throws IOException {
		LeafBucket b = new LeafBucket(0);

		assertSame(b, b.set(id(0x11), id(0x81), null));
		assertEquals(id(0x81), b.get(id(0x11), null));

		assertNull(b.set(id(0x11), null, null));
		assertNull(b.get(id(0x11), null));
	}

	private static AnyObjectId id(int first) {
		MutableObjectId id = new MutableObjectId();
		id.setByte(1, first);
		return id;
	}
}