1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.lang3.function;
19
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21 import static org.junit.jupiter.api.Assertions.assertNull;
22
23 import java.util.function.Supplier;
24
25 import org.apache.commons.lang3.AbstractLangTest;
26 import org.junit.jupiter.api.Test;
27
28 /**
29 * Tests {@link Suppliers}.
30 */
31 class SuppliersTest extends AbstractLangTest {
32
33 /**
34 * Tests {@link Suppliers#get(Supplier)}.
35 */
36 @Test
37 void testGet() {
38 assertNull(Suppliers.get(null));
39 assertNull(Suppliers.get(() -> null));
40 assertNull(Suppliers.get(Suppliers.nul()));
41 assertEquals("foo", Suppliers.get(() -> "foo"));
42 }
43 }