/*
* The CroudTrip! application aims at revolutionizing the car-ride-sharing market with its easy,
* user-friendly and highly automated way of organizing shared Trips. Copyright (C) 2015 Nazeeh Ammari,
* Philipp Eichhorn, Ricarda Hohn, Vanessa Lange, Alexander Popp, Frederik Simon, Michael Weber
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU
* Affero 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package org.croudtrip.utils;
import java.util.List;
public class Assert {
private Assert() { }
public static void assertNotNull(Object... objects) {
for (Object o : objects) {
if (o == null) throw new NullPointerException("param is null");
}
}
public static void assertTrue(boolean expression) {
assertTrue(expression, "expression is false");
}
public static void assertTrue(boolean expression, String errorMsg) {
assertFalse(!expression, errorMsg);
}
public static void assertFalse(boolean expression, String errorMsg) {
if (expression) throw new IllegalArgumentException(errorMsg);
}
public static void assertEquals(Object o1, Object o2, String errorMsg) {
if (o1 == null && o2 == null) return;
if (o1 == null || o2 == null) throw new IllegalArgumentException(errorMsg);
if (!o1.equals(o2)) throw new IllegalArgumentException(errorMsg);
}
public static void assertValidIdx(List<?> list, int idx) {
if (idx < 0 || idx >= list.size())
throw new IndexOutOfBoundsException("idx was " + idx + " but size is " + list.size());
}
}