Test failures on OS X

[hadley]

1. Failure (@test-round.R#234): round_date and ceiling_date skip day time gap (#240) 
round_date(times, "hour") not equal to round
Mean absolute difference: 3600

2. Failure (@test-round.R#241): round_date and ceiling_date skip day time gap (#240) 
ceiling_date(times, "hour") not equal to ceiling
'is.NA' value mismatch: 4 in current 0 in target

3. Failure (@test-round.R#258): round_date and ceiling_date skip day time gap (#240) 
round_date(x, "hour") not equal to y
Mean absolute difference: 3600

[andreas50]

I get the same test failures on Windows 7, 64 bit, R 3.2.0.

In addition, it seems some of the test input (for example @test-round.R#224) shoud be using "CET" instead of "CEST" for the time zone. For example, "2013-03-31 01:15:00 CET" instead of "2013-03-31 01:15:00 CEST".