### Question:
TimeMathParser { public static long parseTimeInSeconds(String timeStr) { return parseTime(timeStr, TimeUnit.SECONDS); }  static long nowInSeconds(); static int resolutionInSeconds(String resolutionStr); static long parseTimeInSeconds(String timeStr); static long parseTime(String timeStr, TimeUnit timeUnit); static long parseTimeInSeconds(long now, String timeStr); static long parseTime(long now, String timeStr, TimeUnit timeUnit);  }### Answer:
@Test public void testParseTimestamp() { Assert.assertEquals(1234567890, TimeMathParser.parseTimeInSeconds("1234567890")); Assert.assertEquals(1234567890, TimeMathParser.parseTimeInSeconds(0, "1234567890")); }