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    • it.unimi.dsi.fastutil.objects.ReferenceArraySetTest Maven / Gradle / Ivy

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    package it.unimi.dsi.fastutil.objects;

import it.unimi.dsi.fastutil.io.BinIO;
import it.unimi.dsi.fastutil.objects.ObjectArraySet;
import it.unimi.dsi.fastutil.objects.ReferenceArraySet;
import it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;

import org.junit.Test;

import static org.junit.Assert.*;

public class ReferenceArraySetTest {

	@Test
	public void testSet() {
		for(int i = 0; i <= 2; i++) {
			final ReferenceArraySet s = i == 0 ? new ReferenceArraySet() : new ReferenceArraySet(2);
			Integer one = new Integer(1), two = new Integer(2), three = new Integer(3);
			assertTrue(s.add(one));
			assertEquals(1, s.size());
			assertTrue(s.contains(one));
			assertFalse(s.contains(new Integer(1)));
			assertTrue(s.add(two));
			assertTrue(s.contains(two));
			assertFalse(s.contains(new Integer(2)));
			assertEquals(2, s.size());
			assertFalse(s.add(one));
			assertFalse(s.remove(three));
			assertTrue(s.add(three));
			assertEquals(3, s.size());
			assertTrue(s.contains(one));
			assertTrue(s.contains(two));
			assertTrue(s.contains(three));
			assertEquals(new ReferenceOpenHashSet(new Object[] { one, two, three }), new ReferenceOpenHashSet(s.iterator()));
			assertTrue(s.remove(three));
			assertEquals(2, s.size());
			assertTrue(s.remove(one));
			assertEquals(1, s.size());
			assertFalse(s.contains(one));
			assertTrue(s.remove(two));
			assertEquals(0, s.size());
			assertFalse(s.contains(one));
		}
	}

	@Test
	public void testClone() {
		ReferenceArraySet s = new ReferenceArraySet();
		assertEquals(s, s.clone());
		Integer zero;
		s.add(zero = new Integer(0));
		assertEquals(s, s.clone());
		s.add(new Integer(0));
		assertEquals(s, s.clone());
		s.add(new Integer(1));
		assertEquals(s, s.clone());
		s.add(new Integer(2));
		assertEquals(s, s.clone());
		s.remove(zero);
		assertEquals(s, s.clone());
	}

	@Test
	public void testSerialisation() throws IOException, ClassNotFoundException {
		// We can't really test reference maps as equals() doesnt' work
		ObjectArraySet s = new ObjectArraySet();
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		ObjectOutputStream oos = new ObjectOutputStream(baos);
		oos.writeObject(s);
		oos.close();
		assertEquals(s, BinIO.loadObject(new ByteArrayInputStream(baos.toByteArray())));

		s.add(new Integer(0));
		s.add(new Integer(1));

		baos.reset();
		oos = new ObjectOutputStream(baos);
		oos.writeObject(s);
		oos.close();
		assertEquals(s, BinIO.loadObject(new ByteArrayInputStream(baos.toByteArray())));
	}
}
    
    
    
    

    




    
    
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