/**

 * SQL-DK

 * Copyright © 2013 František Kučera (frantovo.cz)

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

package info.globalcode.sql.dk;

import java.util.ArrayList;

import java.util.Collection;

import java.util.List;

import static org.testng.Assert.*;

import org.testng.annotations.*;

/**

 *

 * @author Ing. František Kučera (frantovo.cz)

 */

public class FunctionsTest {

	@Test

	public void testNotNull() {

		Collection<String> c = null;

		for (String s : Functions.notNull(c)) {

			fail("Should not iterate through null collection");

		}

		c = new ArrayList<>();

		c.add("ahoj");

		int count = 0;

		for (String s : Functions.notNull(c)) {

			assertEquals(s, "ahoj", "Wrong item in collection");

			count++;

		}

		assertEquals(count, 1, "Wrong number of iterations");

	}

	@Test

	public void testLpad() {

		String original = "abc";

		String padded;

		padded = Functions.lpad(original, 5);

		assertEquals(padded, "  abc");

		padded = Functions.lpad(original, 2);

		assertEquals(padded, original);

	}

	@Test

	public void testRpad() {

		String original = "abc";

		String padded;

		padded = Functions.rpad(original, 5);

		assertEquals(padded, "abc  ");

		padded = Functions.rpad(original, 2);

		assertEquals(padded, original);

	}

	@Test

	public void testRepeat() {

		assertEquals(Functions.repeat('f', 0), "");

		assertEquals(Functions.repeat('f', 3), "fff");

	}

	@Test

	public void testGetClassHierarchy() {

		List<Class<? extends HierarchyMockClass2>> hierarchy = Functions.getClassHierarchy(HierarchyMockClass0.class, HierarchyMockClass2.class);

		assertEquals(hierarchy.size(), 3, "invalid number of classes in the hierarchy");

		assertEquals(hierarchy.get(0), HierarchyMockClass0.class);

		assertEquals(hierarchy.get(1), HierarchyMockClass1.class);

		assertEquals(hierarchy.get(2), HierarchyMockClass2.class);

	}

	private static class HierarchyMockClass0 extends HierarchyMockClass1 {

	}

	private static class HierarchyMockClass1 extends HierarchyMockClass2 {

	}

	private static class HierarchyMockClass2 {

	}

}