1 /* 2 * Copyright (c) 2007 Mockito contributors 3 * This program is made available under the terms of the MIT License. 4 */ 5 6 package org.mockito.internal.util; 7 8 /** 9 * Pre-made preconditions 10 */ 11 public class Checks { 12 13 public static <T> T checkNotNull(T value, String checkedValue) { 14 return checkNotNull(value, checkedValue, null); 15 } 16 17 public static <T> T checkNotNull(T value, String checkedValue, String additionalMessage) { 18 if(value == null) { 19 String message = checkedValue + " should not be null"; 20 if (additionalMessage != null) { 21 message += ". " + additionalMessage; 22 } 23 throw new IllegalArgumentException(message); 24 } 25 return value; 26 } 27 28 public static <T extends Iterable<?>> T checkItemsNotNull(T iterable, String checkedIterable) { 29 checkNotNull(iterable, checkedIterable); 30 for (Object item : iterable) { 31 checkNotNull(item, "item in " + checkedIterable); 32 } 33 return iterable; 34 } 35 } 36
