/*
* Copyright 2012-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.loader.util;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link SystemPropertyUtils}.
*
* @author Dave Syer
*/
public class SystemPropertyUtilsTests {
@BeforeClass
public static void init() {
System.setProperty("foo", "bar");
}
@AfterClass
public static void close() {
System.clearProperty("foo");
}
@Test
public void testVanillaPlaceholder() {
assertThat(SystemPropertyUtils.resolvePlaceholders("${foo}")).isEqualTo("bar");
}
@Test
public void testDefaultValue() {
assertThat(SystemPropertyUtils.resolvePlaceholders("${bar:foo}"))
.isEqualTo("foo");
}
@Test
public void testNestedPlaceholder() {
assertThat(SystemPropertyUtils.resolvePlaceholders("${bar:${spam:foo}}"))
.isEqualTo("foo");
}
@Test
public void testEnvVar() {
assertThat(SystemPropertyUtils.getProperty("lang"))
.isEqualTo(System.getenv("LANG"));
}
}