68 lines
2.3 KiB
Java
68 lines
2.3 KiB
Java
/*
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* Copyright (C) 2012 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.base;
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import static com.google.common.base.StandardSystemProperty.JAVA_COMPILER;
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import static com.google.common.base.StandardSystemProperty.JAVA_EXT_DIRS;
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import static com.google.common.truth.Truth.assertWithMessage;
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import junit.framework.TestCase;
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/**
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* Tests for {@link StandardSystemProperty}.
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*
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* @author Kurt Alfred Kluever
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*/
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public class StandardSystemPropertyTest extends TestCase {
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public void testGetKeyMatchesString() {
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for (StandardSystemProperty property : StandardSystemProperty.values()) {
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String fieldName = property.name();
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String expected = Ascii.toLowerCase(fieldName).replaceAll("_", ".");
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assertEquals(expected, property.key());
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}
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}
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public void testGetValue() {
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for (StandardSystemProperty property : StandardSystemProperty.values()) {
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assertEquals(System.getProperty(property.key()), property.value());
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}
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}
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public void testToString() {
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for (StandardSystemProperty property : StandardSystemProperty.values()) {
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assertEquals(property.key() + "=" + property.value(), property.toString());
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}
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}
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public void testNoNullValues() {
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for (StandardSystemProperty property : StandardSystemProperty.values()) {
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// Even though the contract in System.getProperties() specifies that a value will exist for
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// all of the listed keys, for some reason the "java.compiler" key returns null in some JVMs.
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if (property == JAVA_COMPILER) {
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continue;
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}
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// Removed in Java 9:
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// https://docs.oracle.com/javase/9/migrate/toc.htm#JSMIG-GUID-2C896CA8-927C-4381-A737-B1D81D964B7B
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if (property == JAVA_EXT_DIRS) {
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continue;
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}
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assertWithMessage(property.toString()).that(property.value()).isNotNull();
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}
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}
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}
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