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package org.openecomp.core.nosqldb.util;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.io.Closeable;
import java.io.IOException;
import java.lang.reflect.Field;
import static org.testng.Assert.assertNotNull;
/**
* @author EVITALIY
* @since 22 Oct 17
*/
public class ConfigurationManagerTest {
private static final String NON_EXISTENT = "unexistentfile";
@BeforeMethod
public void resetInstance() throws NoSuchFieldException, IllegalAccessException {
Field field = ConfigurationManager.class.getDeclaredField("instance");
field.setAccessible(true);
field.set(null, null);
}
@Test(expectedExceptions = IOException.class,
expectedExceptionsMessageRegExp = ".*" + NON_EXISTENT + ".*")
public void testGetInstanceSystemProperty() throws Throwable {
try (ConfigurationSystemPropertyUpdater updater = new ConfigurationSystemPropertyUpdater(NON_EXISTENT)) {
ConfigurationManager.getInstance();
} catch (RuntimeException e) {
Throwable cause = e.getCause();
throw cause == null ? e : cause;
}
}
@Test()
public void testGetInstanceDefault() throws Exception {
try (ConfigurationSystemPropertyUpdater property = new ConfigurationSystemPropertyUpdater()) {
ConfigurationManager manager = ConfigurationManager.getInstance();
assertNotNull(manager.getUsername());
}
}
private static class ConfigurationSystemPropertyUpdater implements Closeable {
private final String oldValue;
private ConfigurationSystemPropertyUpdater(String value) {
this.oldValue = System.getProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
System.setProperty(ConfigurationManager.CONFIGURATION_YAML_FILE, value);
}
private ConfigurationSystemPropertyUpdater() {
this.oldValue = System.getProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
System.clearProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
}
@Override
public void close() throws IOException {
if (oldValue == null) {
System.clearProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
} else {
System.setProperty(ConfigurationManager.CONFIGURATION_YAML_FILE, oldValue);
}
}
}
}
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