org.junit.platform.launcher.core.LauncherConfigurationParameters Maven / Gradle / Ivy
/*
* Copyright 2015-2019 the original author or authors.
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v2.0 which
* accompanies this distribution and is available at
*
* https://www.eclipse.org/legal/epl-v20.html
*/
package org.junit.platform.launcher.core;
import java.io.InputStream;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Properties;
import org.junit.platform.commons.logging.Logger;
import org.junit.platform.commons.logging.LoggerFactory;
import org.junit.platform.commons.util.ClassLoaderUtils;
import org.junit.platform.commons.util.Preconditions;
import org.junit.platform.commons.util.ToStringBuilder;
import org.junit.platform.engine.ConfigurationParameters;
/**
* @since 1.0
*/
class LauncherConfigurationParameters implements ConfigurationParameters {
private static final Logger logger = LoggerFactory.getLogger(LauncherConfigurationParameters.class);
private final Map explicitConfigParams;
private final Properties configParamsFromFile;
LauncherConfigurationParameters(Map configParams) {
this(configParams, ConfigurationParameters.CONFIG_FILE_NAME);
}
LauncherConfigurationParameters(Map configParams, String configFileName) {
Preconditions.notNull(configParams, "configuration parameters must not be null");
Preconditions.notBlank(configFileName, "configFileName must not be null or blank");
this.explicitConfigParams = configParams;
this.configParamsFromFile = fromClasspathResource(configFileName.trim());
}
private static Properties fromClasspathResource(String configFileName) {
Properties props = new Properties();
try {
ClassLoader classLoader = ClassLoaderUtils.getDefaultClassLoader();
List resources = Collections.list(classLoader.getResources(configFileName));
if (!resources.isEmpty()) {
if (resources.size() > 1) {
logger.warn(() -> String.format(
"Discovered %d '%s' configuration files in the classpath; only the first will be used.",
resources.size(), configFileName));
}
URL configFileUrl = resources.get(0);
logger.info(() -> String.format(
"Loading JUnit Platform configuration parameters from classpath resource [%s].", configFileUrl));
try (InputStream inputStream = configFileUrl.openStream()) {
props.load(inputStream);
}
}
}
catch (Exception ex) {
logger.warn(ex,
() -> String.format(
"Failed to load JUnit Platform configuration parameters from classpath resource [%s].",
configFileName));
}
return props;
}
@Override
public Optional get(String key) {
return Optional.ofNullable(getProperty(key));
}
@Override
public Optional getBoolean(String key) {
String property = getProperty(key);
if (property != null) {
return Optional.of(Boolean.parseBoolean(property));
}
return Optional.empty();
}
@Override
public int size() {
return this.explicitConfigParams.size();
}
private String getProperty(String key) {
Preconditions.notBlank(key, "key must not be null or blank");
// 1) Check explicit config param.
String value = this.explicitConfigParams.get(key);
// 2) Check system property.
if (value == null) {
try {
value = System.getProperty(key);
}
catch (Exception ex) {
/* ignore */
}
// 3) Check config file.
if (value == null) {
value = this.configParamsFromFile.getProperty(key);
}
}
return value;
}
@Override
public String toString() {
ToStringBuilder builder = new ToStringBuilder(this);
this.explicitConfigParams.forEach(builder::append);
// @formatter:off
this.configParamsFromFile.stringPropertyNames().stream()
.filter(key -> !this.explicitConfigParams.containsKey(key))
.forEach(key -> builder.append(key, this.configParamsFromFile.getProperty(key)));
// @formatter:on
return builder.toString();
}
}