Use org.junit.Assert.assertArrayEquals

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1591830 13f79535-47bb-0310-9956-ffa450edef68
Organize imports, don't use wildcard imports

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1591831 13f79535-47bb-0310-9956-ffa450edef68
LANG-1003: DurationFormatUtils are not able to handle negative durations/periods. Reported by Michael Osipov.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1591840 13f79535-47bb-0310-9956-ffa450edef68