package geniusweb.issuevalue;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.junit.Test;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import tudelft.utilities.immutablelist.Range;

public class NumberValueSetTest {

	private static final BigDecimal ZERO_THREE = new BigDecimal("0.3");
	private static final BigDecimal TWELVE_SIX = new BigDecimal("12.6");
	private static final BigDecimal TWELVE_TWO = new BigDecimal("12.2");
	private final static NumberValueSet set = new NumberValueSet(TWELVE_TWO,
			TWELVE_SIX, ZERO_THREE);
	private final static NumberValueSet set1 = new NumberValueSet(TWELVE_TWO,
			TWELVE_SIX, ZERO_THREE);
	private final static NumberValueSet setb = new NumberValueSet(TWELVE_TWO,
			new BigDecimal("12.6000000000001"), ZERO_THREE);
	private final static NumberValueSet set10 = new NumberValueSet(
			BigDecimal.ZERO, BigDecimal.ONE, new BigDecimal("0.1"));

	private final String asString = "{\"range\":{\"low\":12.2,\"high\":12.6,\"step\":0.3}}";
	private final static NumberValueSet bigset = new NumberValueSet(
			BigDecimal.ZERO, BigDecimal.TEN, new BigDecimal("0.00003"));

	@Test(expected = IllegalArgumentException.class)
	public void constructor1Test() {
		new NumberValueSet(TWELVE_SIX, TWELVE_TWO, ZERO_THREE);
	}

	@Test(expected = IllegalArgumentException.class)
	public void constructor2Test() {
		new NumberValueSet(BigDecimal.ZERO, BigDecimal.TEN,
				new BigDecimal("-1"));
	}

	@Test
	public void iteratorTest() {
		assertEquals(new NumberValue(BigDecimal.ZERO),
				bigset.iterator().next());
	}

	@Test
	public void testSerialize() throws JsonProcessingException {
		ObjectMapper jackson = new ObjectMapper();

		String jsonstr = jackson.writeValueAsString(set);
		//System.out.println(json);
		assertEquals(asString, jsonstr);
	}

	@Test
	public void testDeserialize()
			throws JsonParseException, JsonMappingException, IOException {
		ObjectMapper jackson = new ObjectMapper();
		ValueSet p = jackson.readValue(asString, NumberValueSet.class);
		assertEquals(set, p);
	}

	@Test
	public void containsTest() {
		assertTrue(bigset.contains(new NumberValue(new BigDecimal("0.00393"))));
	}

	@Test
	public void containsFirstTest() {
		assertTrue(bigset.contains(new NumberValue(BigDecimal.ZERO)));
	}

	@Test
	public void containsLastTest() {
		assertTrue(set10.contains(new NumberValue(BigDecimal.ONE)));
	}

	@Test
	public void equalsTest() {
		assertEquals(set, set1);
		assertEquals(set1, set);
		assertNotEquals(set, null);
		assertNotEquals(null, set);
		assertNotEquals(set, setb);

	}

	@Test
	public void getRangeTest() {
		assertEquals(new Range(TWELVE_TWO, TWELVE_SIX, ZERO_THREE),
				set.getRange());
	}

	@Test
	public void testGet() {
		assertEquals(new NumberValue(TWELVE_TWO), set.get(BigInteger.ZERO));
		assertEquals(new NumberValue(TWELVE_TWO), set.get(0));
		assertEquals(new NumberValue(TWELVE_TWO.add(ZERO_THREE)),
				set.get(BigInteger.ONE));
	}

	@Test
	public void testSize() {
		assertEquals(new BigInteger("2"), set.size());
		assertEquals(new BigInteger("11"), set10.size());
	}

}