/** Make sure that the persistent storage file that doesn't exist is created. */
public void testNonExistentDirect() throws IOException {
File f = createNonexistentDirect();
FileUsageCounter counter =
new FileUsageCounter("test", new TimeBasedUsage(), createTarget(), f);
assertEquals("The file mustn't exist at this point yet", false, f.exists());
counter.save();
assertEquals("The file exist at this point", true, f.exists());
f.delete();
assertEquals("The file must have been deleted by now", false, f.exists());
}
/** Make sure {@link FileUsageCounter#reset()} works. */
public void testReset() throws IOException, InterruptedException {
NDC.push("testReset");
try {
File f = createNonexistentDirect();
FileUsageCounter counter =
new FileUsageCounter("test", new TimeBasedUsage(), createTarget(), f);
long delay = 100;
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
Thread.sleep(delay);
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
counter.consume(new DataSample<Double>("source", "signature", null, new Error()));
logger.debug("Consumed: " + counter.getUsageAbsolute());
// Can't really assert much, the timer is too inexact
assertTrue("Consumed value less than time passed???", counter.getUsageAbsolute() > delay);
counter.reset();
assertEquals("Wrong value after reset", 0, counter.getUsageAbsolute());
} finally {
NDC.pop();
}
}
public void testConsumeNull() throws IOException {
try {
File f = createNonexistentDirect();
FileUsageCounter counter =
new FileUsageCounter("test", new TimeBasedUsage(), createTarget(), f);
counter.consume(null);
} catch (IllegalArgumentException ex) {
assertEquals("Wrong exception message", "signal can't be null", ex.getMessage());
}
}
public void testExisting() throws IOException, InterruptedException {
NDC.push("testExisting");
try {
File f = File.createTempFile("counter", "");
f.deleteOnExit();
PrintWriter pw = new PrintWriter(new FileWriter(f));
pw.println("# comment");
pw.println("threshold=100");
pw.println("current=0");
pw.close();
FileUsageCounter counter =
new FileUsageCounter("name", new TimeBasedUsage(), createTarget(), f);
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
Thread.sleep(25);
// This will cause a debug message
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
logger.debug("Consumed: " + counter.getUsageRelative());
Thread.sleep(25);
// This will cause an info message
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
Thread.sleep(30);
// This will cause a warning message
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
Thread.sleep(30);
// This *will* cause an alert (error message)
counter.consume(new DataSample<Double>("source", "signature", 1d, null));
logger.debug("Consumed: " + counter.getUsageRelative());
} finally {
NDC.pop();
}
}
