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 org.apache.commons.lang3.SystemUtils;
21 import org.junit.jupiter.api.Assertions;
22 import org.junit.jupiter.api.Test;
23
24 /**
25 * Tests {@link StringLookupFactory#INSTANCE_ENVIRONMENT_VARIABLES}.
26 */
27 class EnvironmentVariableStringLookupTest {
28
29 @Test
30 void testNull() {
31 Assertions.assertNull(StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(null));
32 }
33
34 @Test
35 void testOne() {
36 if (SystemUtils.IS_OS_WINDOWS) {
37 final String key = "PATH";
38 Assertions.assertEquals(System.getenv(key), StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(key));
39 } else if (SystemUtils.IS_OS_LINUX) {
40 final String key = "USER";
41 Assertions.assertEquals(System.getenv(key), StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(key));
42 }
43 }
44
45 @Test
46 void testToString() {
47 // does not blow up and gives some kind of string.
48 Assertions.assertFalse(StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.toString().isEmpty());
49 }
50
51 }