Bug 1328453 - Re-add accidentally deleted unit test for calculating durations
Bug 1328453 - Re-add accidentally deleted unit test for calculating durations

edmorley/treeherder,tojon/treeherder,kapy2010/treeherder,edmorley/treeherder,kapy2010/treeherder,edmorley/treeherder,KWierso/treeherder,tojonmz/treeherder,kapy2010/treeherder,tojon/treeherder,tojonmz/treeherder,tojon/treeherder,kapy2010/treeherder,tojonmz/treeherder,KWierso/treeherder,tojonmz/treeherder,KWierso/treeherder,edmorley/treeherder,KWierso/treeherder,kapy2010/treeherder,tojon/treeherder,tojonmz/treeherder,tojonmz/treeherder