/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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.apache.geode.internal.util;
import static org.apache.geode.internal.lang.SystemUtils.*;
import static org.apache.geode.internal.util.HostName.*;
import static org.assertj.core.api.Assertions.*;
import java.io.IOException;
import org.apache.geode.test.junit.categories.UnitTest;
import org.junit.Rule;
import org.junit.Test;
import org.junit.contrib.java.lang.system.EnvironmentVariables;
import org.junit.contrib.java.lang.system.RestoreSystemProperties;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import junitparams.JUnitParamsRunner;
import junitparams.Parameters;
@Category(UnitTest.class)
@RunWith(JUnitParamsRunner.class)
public class HostNameTest {
private static final String EXPECTED_HOSTNAME = "expected-hostname";
private static final String UNKNOWN = "unknown";
@Rule
public final EnvironmentVariables env = new EnvironmentVariables();
@Rule
public final RestoreSystemProperties sysProps = new RestoreSystemProperties();
@Test
public void execHostNameShouldNeverReturnNull() throws IOException {
String result = new HostName().execHostName();
assertThat(result).isNotNull();
}
@Test
@Parameters({MAC_OSX_NAME, LINUX_OS_NAME, SOLARIS_OS_NAME, WINDOWS_OS_NAME})
public void shouldExecHostNameIfEnvValueNotAvailableOnOS(String osName) throws IOException {
setHostNamePropertiesNull(osName);
String result = new HostName().determineHostName();
assertThat(result).isNotNull();
}
@Test
@Parameters({MAC_OSX_NAME, LINUX_OS_NAME, SOLARIS_OS_NAME, WINDOWS_OS_NAME})
public void shouldUseComputerNameIfAvailableOnOS(String osName) throws IOException {
setHostNameProperties(osName);
String result = new HostName().determineHostName();
assertThat(result).isEqualTo(EXPECTED_HOSTNAME);
}
@Test
@Parameters({MAC_OSX_NAME, LINUX_OS_NAME, SOLARIS_OS_NAME, WINDOWS_OS_NAME})
public void shouldBeNullIfEnvValueNotAvailableOnOS(String osName) throws IOException {
setHostNamePropertiesNull(osName);
String result = new HostName().getHostNameFromEnv();
assertThat(result).isEqualTo(null);
}
private void setHostNameProperties(String osName) {
System.setProperty("os.name", osName);
if (isWindows()) {
this.env.set(COMPUTER_NAME_PROPERTY, EXPECTED_HOSTNAME);
this.env.set(HOSTNAME_PROPERTY, null);
} else {
this.env.set(COMPUTER_NAME_PROPERTY, null);
this.env.set(HOSTNAME_PROPERTY, EXPECTED_HOSTNAME);
}
assertThat(System.getProperty("os.name")).isEqualTo(osName);
if (isWindows()) {
assertThat(System.getenv(COMPUTER_NAME_PROPERTY)).isEqualTo(EXPECTED_HOSTNAME);
assertThat(System.getenv(HOSTNAME_PROPERTY)).isNull();
} else {
assertThat(System.getenv(COMPUTER_NAME_PROPERTY)).isNull();
assertThat(System.getenv(HOSTNAME_PROPERTY)).isEqualTo(EXPECTED_HOSTNAME);
}
}
private void setHostNamePropertiesNull(String osName) {
System.setProperty("os.name", osName);
if (isWindows()) {
this.env.set(COMPUTER_NAME_PROPERTY, null);
this.env.set(HOSTNAME_PROPERTY, null);
} else {
this.env.set(COMPUTER_NAME_PROPERTY, null);
this.env.set(HOSTNAME_PROPERTY, null);
}
assertThat(System.getProperty("os.name")).isEqualTo(osName);
if (isWindows()) {
assertThat(System.getenv(COMPUTER_NAME_PROPERTY)).isNull();
assertThat(System.getenv(HOSTNAME_PROPERTY)).isNull();
} else {
assertThat(System.getenv(COMPUTER_NAME_PROPERTY)).isNull();
assertThat(System.getenv(HOSTNAME_PROPERTY)).isNull();
}
}
}