import static org.junit.Assert.assertEquals;

import org.junit.Test;


/**
 * A few initial tests for ColorHash tables, using JUnit, version 4.
 * Note: This is NOT a complete test suite.  Right now it does not
 * test collision handling much or quadratic probing at all. 
 * To "turn off" any test, put double slashes ( "//" ) in front of the
 * "@Test" that precedes that method.   For example... "//@Test  ".
 * Note that some of the methods mentioned here such as setDebugging and showWholeTable
 * are not required to be supported by the ColorHash class, but you might wish
 * to create methods to help you with debugging.
 *
 * @author Steve Tanimoto
 * @version 0.02. 
 * 
 * Oct. 24, 2016
 * 
 */
public class UnitTestColorHash {
	ColorKey blackKey=null, whiteKey=null, redKey=null, greenKey=null, blueKey=null;
	ColorHash testHT;
	
	void makeKeys() {
		try {
			blackKey = new ColorKey(0, 15);
			whiteKey = new ColorKey(255, 255, 255, 15);
			redKey   = new ColorKey(255, 0, 0, 15);
			greenKey = new ColorKey(0, 255, 0, 15);
			blueKey  = new ColorKey(0, 0, 255, 15);
		}
		catch(Exception e) {}
	}
	
	@Test
    public void testPutAndGetAt() {
		makeKeys();
    	// Instantiate ColorHash.
    	testHT = new ColorHash(3, 6, "Linear Probing", 0.9);
    	assertEquals(3, testHT.getTableSize());
    	ResponseItem ri = testHT.colorHashPut(blackKey, 5);
    	assertEquals(ri.nCollisions, 0);
    	assertEquals(ri.didRehash, false);
    	assertEquals(ri.didUpdate, false);
    	ColorKey k = testHT.getKeyAt(0);
    	assertEquals(k, blackKey);
    	ri = testHT.colorHashPut(whiteKey, 5);
    	ri = testHT.colorHashPut(redKey, 5);
    	assertEquals(ri.didRehash, true);
    	assertEquals(ri.didUpdate, false);
    	ri = testHT.colorHashPut(redKey, 23);
    	assertEquals(ri.didRehash, false);
    	assertEquals(ri.didUpdate, true);
    	ColorKey k2 = testHT.getKeyAt(6);
    	assertEquals(k2, redKey);
    	long v = testHT.getValueAt(6);
    	assertEquals(v, 23);
    }
    @Test
    public void testPutAndGet() {
		makeKeys();
    	// Instantiates ColorHash.
    	testHT = new ColorHash(3, 6, "Linear Probing", 0.9);
    	assertEquals(3, testHT.getTableSize());
    	//testHT.setDebugging(true);
    	System.out.println(testHT.colorHashPut(blackKey, 5));
    	try {
    		long v = testHT.colorHashGet(blackKey).value;
    		assertEquals(v, 5);
    		testHT.colorHashPut(whiteKey, 5);
    		testHT.colorHashPut(redKey, 5);
    		testHT.colorHashPut(redKey, 23);
    		v = testHT.colorHashGet(redKey).value;
    		assertEquals(v, 23);
    	}
    	catch(Exception e) {};
    }

	@Test
    public void testIncrementing() {
		makeKeys();
    	// Instantiates ColorHash.
    	testHT = new ColorHash(3, 6, "Linear Probing", 0.9);
    	//assertEquals(3, testHT.getTableSize());
    	//testHT.setDebugging(true);
    	System.out.println(testHT.increment(blackKey));
    	//System.out.println(testHT.showWholeTable());
    	System.out.println(testHT.increment(whiteKey));
    	//System.out.println(testHT.showWholeTable());
    	System.out.println(testHT.increment(blackKey));
    	//System.out.println(testHT.showWholeTable());
    	System.out.println(testHT.increment(redKey));
    	//System.out.println(testHT.showWholeTable());
    }
	//@Test
	public void testIncrementAndGet() {
		makeKeys();
    	testHT = new ColorHash(3, 6, "Linear Probing", 0.9);
    	System.out.println(testHT.increment(redKey));
    	System.out.println(testHT.increment(redKey));
    	try {
    		ResponseItem ri = testHT.colorHashGet(redKey);
    		assertEquals(ri.value, 2);
    		System.out.println(ri);
    	}
    	catch(Exception e){}

	}
    
}