package pr1.uebung04;

import static org.junit.Assert.*;

import org.junit.Test;

import pr.MakeItSimple.PRException;

public class SearchInRandomNumbers1stTest {

	@Test
	public void positiveArrayLength() {
		assertEquals(5, SearchInRandomNumbers.generate(5).length);
	}

	@Test(expected=PRException.class)
	public void negativeArrayLength() {
		SearchInRandomNumbers.generate(-1);
	}
	
	
	/*
	 * searchAll
	 */
	
	@Test
	public void searchAllEmptyArray() throws Exception {
		int[] numbers = new int[0];
		assertEquals(0, SearchInRandomNumbers.searchAll(numbers, 43).length);
	}
	
	@Test
	public void searchAllExistingTwice() throws Exception {
		int[] numbers = new int[] {42, 42, 1};
		int[] positions = SearchInRandomNumbers.searchAll(numbers, 42);
		assertEquals(2, positions.length);
		assertEquals(0, positions[0]);
		assertEquals(1, positions[1]);
	}
	
	
	/*
	 * searchLast
	 */
	
	@Test
	public void searchLastExistingTwice() throws Exception {
		int[] numbers = new int[] {42, 42, 43};
		assertEquals(1, SearchInRandomNumbers.searchLast(numbers, 42));
	}
	
	@Test(expected=PRException.class)
	public void searchLastNotContained() throws Exception {
		int[] numbers = new int[] {1, 2, 3, 4, 5};
		SearchInRandomNumbers.searchLast(numbers, 43);
	}
	
}