verify(logManager).reset();
verify(logger).addHandler(handlerCaptor.capture());
FileHandler fileHandler = (FileHandler) handlerCaptor.getValue();
assertEquals(UTF_8.name(), fileHandler.getEncoding());
assertTrue(fileHandler.getFormatter() instanceof SimpleFormatter);
fileHandler.publish(new LogRecord(INFO, "some message"));
File logFile = new File(new File(caliperDirectory, "log"),
ISODateTimeFormat.basicDateTimeNoMillis().print(startTime) + "." + runId + ".log");
assertTrue(logFile.isFile());
assertTrue(Files.toString(logFile, UTF_8).contains("some message"));
}