def test_get_trace_gaps():
"""geomag.TimeseriesUtility_test.test_get_trace_gaps
confirm that gaps are found in a trace
"""
trace = __create_trace('H', [1, 1, numpy.nan, numpy.nan, 0, 1])
# set time of first sample
trace.stats.starttime = UTCDateTime('2015-01-01T00:00:00Z')
# set sample rate to 1 minute
trace.stats.delta = 60
# find gap
gaps = TimeseriesUtility.get_trace_gaps(trace)
assert_equals(len(gaps), 1)
gap = gaps[0]
assert_equals(gap[0], UTCDateTime('2015-01-01T00:02:00Z'))
assert_equals(gap[1], UTCDateTime('2015-01-01T00:03:00Z'))
