View Javadoc
1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   * https://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.commons.lang3;
20  
21  import static org.junit.jupiter.api.Assertions.assertEquals;
22  import static org.junit.jupiter.api.Assertions.assertFalse;
23  import static org.junit.jupiter.api.Assertions.assertNull;
24  import static org.junit.jupiter.api.Assertions.assertTrue;
25  
26  import org.junit.jupiter.api.Test;
27  
28  /**
29   * Tests {@link JavaVersion}.
30   */
31  class JavaVersionTest extends AbstractLangTest {
32  
33      @Test
34      void testAtLeast() {
35          assertFalse(JavaVersion.JAVA_1_2.atLeast(JavaVersion.JAVA_1_5), "1.2 at least 1.5 passed");
36          assertTrue(JavaVersion.JAVA_1_5.atLeast(JavaVersion.JAVA_1_2), "1.5 at least 1.2 failed");
37          assertFalse(JavaVersion.JAVA_1_6.atLeast(JavaVersion.JAVA_1_7), "1.6 at least 1.7 passed");
38          // 0.x
39          assertTrue(JavaVersion.JAVA_0_9.atLeast(JavaVersion.JAVA_1_5), "0.9 at least 1.5 failed");
40          assertFalse(JavaVersion.JAVA_0_9.atLeast(JavaVersion.JAVA_1_6), "0.9 at least 1.6 passed");
41      }
42  
43      @Test
44      void testGetJavaVersion() throws Exception {
45          assertEquals(JavaVersion.JAVA_0_9, JavaVersion.get("0.9"), "0.9 failed");
46          assertEquals(JavaVersion.JAVA_1_1, JavaVersion.get("1.1"), "1.1 failed");
47          assertEquals(JavaVersion.JAVA_1_2, JavaVersion.get("1.2"), "1.2 failed");
48          assertEquals(JavaVersion.JAVA_1_3, JavaVersion.get("1.3"), "1.3 failed");
49          assertEquals(JavaVersion.JAVA_1_4, JavaVersion.get("1.4"), "1.4 failed");
50          assertEquals(JavaVersion.JAVA_1_5, JavaVersion.get("1.5"), "1.5 failed");
51          assertEquals(JavaVersion.JAVA_1_6, JavaVersion.get("1.6"), "1.6 failed");
52          assertEquals(JavaVersion.JAVA_1_7, JavaVersion.get("1.7"), "1.7 failed");
53          assertEquals(JavaVersion.JAVA_1_8, JavaVersion.get("1.8"), "1.8 failed");
54          assertEquals(JavaVersion.JAVA_9, JavaVersion.get("9"));
55          assertEquals(JavaVersion.JAVA_10, JavaVersion.get("10"));
56          assertEquals(JavaVersion.JAVA_11, JavaVersion.get("11"));
57          assertEquals(JavaVersion.JAVA_12, JavaVersion.get("12"));
58          assertEquals(JavaVersion.JAVA_13, JavaVersion.get("13"));
59          assertEquals(JavaVersion.JAVA_14, JavaVersion.get("14"));
60          assertEquals(JavaVersion.JAVA_15, JavaVersion.get("15"));
61          assertEquals(JavaVersion.JAVA_16, JavaVersion.get("16"));
62          assertEquals(JavaVersion.JAVA_17, JavaVersion.get("17"));
63          assertEquals(JavaVersion.JAVA_18, JavaVersion.get("18"));
64          assertEquals(JavaVersion.JAVA_19, JavaVersion.get("19"));
65          assertEquals(JavaVersion.JAVA_20, JavaVersion.get("20"));
66          assertEquals(JavaVersion.JAVA_21, JavaVersion.get("21"));
67          assertEquals(JavaVersion.JAVA_22, JavaVersion.get("22"));
68          assertEquals(JavaVersion.JAVA_23, JavaVersion.get("23"));
69          assertEquals(JavaVersion.JAVA_24, JavaVersion.get("24"));
70          assertEquals(JavaVersion.JAVA_25, JavaVersion.get("25"));
71          assertEquals(JavaVersion.JAVA_26, JavaVersion.get("26"));
72          assertEquals(JavaVersion.JAVA_27, JavaVersion.get("27"));
73          assertEquals(JavaVersion.JAVA_28, JavaVersion.get("28"));
74      }
75  
76      @Test
77      void testGetJavaVersionMalformed() throws Exception {
78          // Failures
79          assertEquals(JavaVersion.JAVA_RECENT, JavaVersion.get("1.10"), "1.10 failed");
80          // assertNull("2.10 unexpectedly worked", JavaVersion.get("2.10"));
81          assertEquals(JavaVersion.get("1.5"), JavaVersion.getJavaVersion("1.5"), "Wrapper method failed");
82          assertEquals(JavaVersion.JAVA_RECENT, JavaVersion.get("99"), "Unhandled"); // LANG-1384
83          // Unknown or malformed versions must return null per the Javadoc, never throw
84          // (a NumberFormatException here poisons SystemUtils' static initializer).
85          assertNull(JavaVersion.get("1."));
86          assertNull(JavaVersion.get("bogus"));
87          assertNull(JavaVersion.get("1.x"));
88          assertNull(JavaVersion.get(""));
89      }
90  
91      @Test
92      void testToString() {
93          assertEquals("1.2", JavaVersion.JAVA_1_2.toString());
94      }
95  
96  }