/*
 * Copyright 2015-2019 the original author or authors.
 *
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v2.0 which
 * accompanies this distribution and is available at
 *
 * http://www.eclipse.org/legal/epl-v20.html
 */

package org.junit.jupiter.api;

import static org.junit.jupiter.api.AssertionUtils.buildPrefix;
import static org.junit.jupiter.api.AssertionUtils.fail;
import static org.junit.jupiter.api.AssertionUtils.nullSafeGet;

import java.util.function.Supplier;

AssertNull is a collection of utility methods that support asserting there is no object.
Since:5.0
/** * {@code AssertNull} is a collection of utility methods that support asserting * there is no object. * * @since 5.0 */
class AssertNull { private AssertNull() { /* no-op */ } static void assertNull(Object actual) { assertNull(actual, (String) null); } static void assertNull(Object actual, String message) { if (actual != null) { failNotNull(actual, message); } } static void assertNull(Object actual, Supplier<String> messageSupplier) { if (actual != null) { failNotNull(actual, nullSafeGet(messageSupplier)); } } private static void failNotNull(Object actual, String message) { fail(buildPrefix(message) + "expected: <null> but was: <" + actual + ">", null, actual); } }