def test_time_shifting(self):
"""
Tests the shift_time_of_file() function.
"""
with NamedTemporaryFile() as tf:
output_filename = tf.name
# Test a normal file first.
filename = os.path.join(
self.path, 'data',
"BW.BGLD.__.EHE.D.2008.001.first_10_records")
# Shift by one second.
util.shift_time_of_file(filename, output_filename, 10000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 1
self.assertEqual(st_before, st_after)
# Shift by 22 seconds in the other direction.
util.shift_time_of_file(filename, output_filename, -220000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime -= 22
self.assertEqual(st_before, st_after)
# Shift by 11.33 seconds.
util.shift_time_of_file(filename, output_filename, 113300)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 11.33
self.assertEqual(st_before, st_after)
# Test a special case with the time correction applied flag set but
# no actual time correction in the field.
filename = os.path.join(
self.path, 'data',
"one_record_time_corr_applied_but_time_corr_is_zero.mseed")
# Positive shift.
util.shift_time_of_file(filename, output_filename, 22000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 2.2
self.assertEqual(st_before, st_after)
# Negative shift.
util.shift_time_of_file(filename, output_filename, -333000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime -= 33.3
self.assertEqual(st_before, st_after)
def test_time_shifting(self):
"""
Tests the shift_time_of_file() function.
"""
with NamedTemporaryFile() as tf:
output_filename = tf.name
# Test a normal file first.
filename = os.path.join(
self.path, 'data',
"BW.BGLD.__.EHE.D.2008.001.first_10_records")
# Shift by one second.
util.shift_time_of_file(filename, output_filename, 10000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 1
self.assertEqual(st_before, st_after)
# Shift by 22 seconds in the other direction.
util.shift_time_of_file(filename, output_filename, -220000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime -= 22
self.assertEqual(st_before, st_after)
# Shift by 11.33 seconds.
util.shift_time_of_file(filename, output_filename, 113300)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 11.33
self.assertEqual(st_before, st_after)
# Test a special case with the time correction applied flag set but
# no actual time correction in the field.
filename = os.path.join(
self.path, 'data',
"one_record_time_corr_applied_but_time_corr_is_zero.mseed")
# Positive shift.
util.shift_time_of_file(filename, output_filename, 22000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 2.2
self.assertEqual(st_before, st_after)
# Negative shift.
util.shift_time_of_file(filename, output_filename, -333000)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime -= 33.3
self.assertEqual(st_before, st_after)
def test_time_shifting_special_case(self):
"""
Sometimes actually changing the time value is necessary. This works but
is considered experimental and thus emits a warning. Therefore Python
>= 2.6 only.
"""
with NamedTemporaryFile() as tf:
output_filename = tf.name
# This file was created only for testing purposes.
filename = os.path.join(
self.path, 'data',
"one_record_already_applied_time_correction.mseed")
with warnings.catch_warnings(record=True):
warnings.simplefilter('error', UserWarning)
self.assertRaises(UserWarning,
util.shift_time_of_file,
input_file=filename,
output_file=output_filename,
timeshift=123400)
# Now ignore the warnings and test the default values.
warnings.simplefilter('ignore', UserWarning)
util.shift_time_of_file(input_file=filename,
output_file=output_filename,
timeshift=123400)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 12.34
self.assertEqual(st_before, st_after)
# Test negative shifts.
with warnings.catch_warnings(record=True):
warnings.simplefilter('ignore', UserWarning)
util.shift_time_of_file(input_file=filename,
output_file=output_filename,
timeshift=-22222)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime -= 2.2222
self.assertEqual(st_before, st_after)
def test_time_shifting_special_case(self):
"""
Sometimes actually changing the time value is necessary. This works but
is considered experimental and thus emits a warning. Therefore Python
>= 2.6 only.
"""
with NamedTemporaryFile() as tf:
output_filename = tf.name
# This file was created only for testing purposes.
filename = os.path.join(
self.path, 'data',
"one_record_already_applied_time_correction.mseed")
with warnings.catch_warnings(record=True):
warnings.simplefilter('error', UserWarning)
self.assertRaises(UserWarning, util.shift_time_of_file,
input_file=filename,
output_file=output_filename,
timeshift=123400)
# Now ignore the warnings and test the default values.
warnings.simplefilter('ignore', UserWarning)
util.shift_time_of_file(input_file=filename,
output_file=output_filename,
timeshift=123400)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime += 12.34
self.assertEqual(st_before, st_after)
# Test negative shifts.
with warnings.catch_warnings(record=True):
warnings.simplefilter('ignore', UserWarning)
util.shift_time_of_file(input_file=filename,
output_file=output_filename,
timeshift=-22222)
st_before = _read_mseed(filename)
st_after = _read_mseed(output_filename)
st_before[0].stats.starttime -= 2.2222
self.assertEqual(st_before, st_after)
