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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.statistics;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
import com.yahoo.container.StatisticsConfig;
/**
* Test set for groups of values.
*
* @author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
*/
public class ValueGroupTestCase extends junit.framework.TestCase {
private volatile boolean gotRecord = false;
private class ValueGroupHandler extends Handler {
// this is for testing ValueProxy
@Override
public void publish(LogRecord record) {
com.yahoo.log.event.ValueGroup msg = (com.yahoo.log.event.ValueGroup) record.getParameters()[0];
assertEquals("test", msg.getValue("name"));
String values = msg.getValue("values");
assertFalse("Unexpected value for a.", values.indexOf("a=-50.0") == -1);
assertFalse("Unexpected value for b.", values.indexOf("b=40.0") == -1);
assertFalse("Unexpected value for c.", values.indexOf("c=0.0") == -1);
gotRecord = true;
}
@Override
public void flush() {
}
@Override
public void close() throws SecurityException {
}
}
public void testBasic() {
Logger logger = Logger.getLogger(ValueGroup.class.getName());
boolean initUseParentHandlers = logger.getUseParentHandlers();
Handler logChecker = new ValueGroupHandler();
logger.setUseParentHandlers(false);
final MockStatistics manager = new MockStatistics();
ValueGroup v = new ValueGroup("test", manager);
v.put("a", 50.0);
v.put("b", 40.0);
v.put("a", -50.0);
assertTrue("Last value inserted to a was -50",
-50.0 == v.getValue("a").get());
assertTrue("Last value inserted to b was 40.",
40.0 == v.getValue("b").get());
assertTrue("c has not been used yet",
0.0 == v.getValue("c").get());
logger.addHandler(logChecker);
v.run();
assertFalse("The logging handler did not really run.", gotRecord == false);
assertEquals(1, manager.registerCount);
// cleanup:
logger.removeHandler(logChecker);
logger.setUseParentHandlers(initUseParentHandlers);
}
public void testOverlappingSubnames() {
final MockStatistics manager = new MockStatistics();
ValueGroup v = new ValueGroup("jappe", manager);
ValueGroup v2 = new ValueGroup("nalle", manager);
final String name = "mobil";
v.put(name, 50.0);
v2.put(name, 40.0);
assertEquals(50.0, v.getValue(name).get(), 1e-9);
assertEquals(40.0, v2.getValue(name).get(), 1e-9);
assertEquals(2, manager.registerCount);
}
public void testObjectContracts() {
ValueGroup v = new ValueGroup("test", new MockStatistics());
ValueGroup v2 = new ValueGroup("test", new MockStatistics());
v2.put("nalle", 2.0);
assertEquals(v, v2);
assertEquals(v.hashCode(), v2.hashCode());
v2 = new ValueGroup("nalle", new MockStatistics());
assertFalse("Different names should lead to different hashcodes",
v.hashCode() == v2.hashCode());
assertFalse("Different names should lead to equals() return false",
v.equals(v2));
}
public class MockStatistics implements Statistics {
public StatisticsConfig config = null;
public int registerCount = 0;
@Override
public void register(Handle h) {
registerCount += 1;
}
@Override
public void remove(String name) {
}
@Override
public StatisticsConfig getConfig() {
return config;
}
@Override
public int purge() {
return 0;
}
}
}
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