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.text.lookup;
19
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21 import static org.junit.jupiter.api.Assertions.assertFalse;
22 import static org.junit.jupiter.api.Assertions.assertNull;
23
24 import org.junit.jupiter.api.Test;
25
26 /**
27 * Tests {@link StringLookupFactory#INSTANCE_SYSTEM_PROPERTIES}.
28 */
29 class SystemPropertyStringLookupTest {
30
31 @Test
32 void testNull() {
33 assertNull(StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.apply(null));
34 }
35
36 @Test
37 void testToString() {
38 // does not blow up and gives some kind of string.
39 assertFalse(StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.toString().isEmpty());
40 }
41
42 @Test
43 void testUserName() {
44 final String key = "user.name";
45 assertEquals(System.getProperty(key), StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.apply(key));
46 }
47
48 }