package net.sf.javaml.core;

import static org.junit.Assert.*;

import java.util.HashSet;
import java.util.Set;

import org.junit.Test;

public class TestSparseInstance {
	@Test
	public void test(){
		SparseInstance si = new SparseInstance();
		
		assertTrue(si.isEmpty());
		assertEquals(0, si.size());
		assertFalse(si.containsKey(1));
		assertTrue(si.entrySet().isEmpty());
		assertFalse(si.containsKey(new Object()));
		assertFalse(si.containsValue(new Object()));
		si.clear();
		
		si = new SparseInstance(0, 9); // default value 5
		assertEquals(9, (int)(double)si.get(new Object()));
		//si.
		
		si = new SparseInstance(new double[]{1, 2, 3}, 5.0);
		si = new SparseInstance(new double[]{1, 2, 3}, new Integer(5));
		si = new SparseInstance(new double[]{1, 2, 3}, 7, null);
		assertEquals(1, (int)(double)si.get(0));
		assertEquals(2, (int)(double)si.get(1));
		assertEquals(3, (int)(double)si.get(2));
		assertEquals(7, (int)(double)si.get(3));
		assertEquals(7, (int)(double)si.get(new Object()));
		assertEquals(3, si.size());
		assertFalse(si.isEmpty());

		
		si = new SparseInstance(new double[]{0.0, 2, 3, 0.0}, 0.0);
		assertEquals(2, si.size());
		assertTrue(si.containsKey(1));
		assertTrue(si.containsKey(2));
		assertEquals(2, (int)(double)si.value(1));
		assertEquals(3, (int)(double)si.value(2));
		assertTrue(si.containsValue(3.0));
		assertTrue(si.containsValue(2.0));
		assertFalse(si.keySet().isEmpty());
		si.put(0, 4.0);
		assertEquals(4, (int)(double)si.value(0));
		assertEquals(3, si.entrySet().size());
		si.remove(0);
		assertEquals(2, si.entrySet().size());		
		assertEquals(2, si.values().size());
		assertEquals(4, si.noAttributes());
		si.removeAttribute(1);
		si.removeAttribute(5);
		assertNotNull(si.toString());
		si.hashCode();
		assertFalse(si.equals(new Object()));
		assertTrue(si.equals(si));
		assertFalse(si.equals(null));
		assertFalse(si.equals(new Integer(5)));
		assertFalse(si.equals(new SparseInstance()));
		assertFalse(si.equals(new SparseInstance(new double[]{0.0, 2, 3, 0.0}, 0.0)));
		
		assertTrue(si.equals(si.copy()));
		assertTrue(si.copy().equals(si.copy()));
		assertTrue(si.copy().equals(si));
		si.clear();
		
		si = new SparseInstance(new double[]{0.0, 2, 3, 0.0}, 0.0);
		
		Set<Integer> s = new HashSet<Integer>();
		for(int i = 0; i < 5; i++) s.add(i);
		si.removeAttributes(s);
		assertTrue(si.isEmpty());
		assertTrue(si.noAttributes() == 0);
		
		si = new SparseInstance(5);
		si.setNoAttributes(10);
		assertTrue(si.noAttributes() == 10);
	}
}