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test_core.py
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test_core.py
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# -*- coding: utf-8 -*-
"""
The seisan.core test suite.
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
from future.builtins import * # NOQA
import os
import unittest
import numpy as np
from obspy.core import read
from obspy.core.utcdatetime import UTCDateTime
from obspy.io.seisan.core import _get_version, _is_seisan, _read_seisan
class CoreTestCase(unittest.TestCase):
"""
Test cases for SEISAN core interfaces.
"""
def setUp(self):
# directory where the test files are located
self.path = os.path.join(os.path.dirname(__file__), 'data')
def test_get_version(self):
"""
Tests resulting version strings of SEISAN file.
"""
# 1 - big endian, 32 bit, version 7
fn = os.path.join(self.path, '1996-06-03-1917-52S.TEST__002')
with open(fn, 'rb') as fp:
data = fp.read(80 * 12)
self.assertEqual(_get_version(data), ('>', 32, 7))
# 2 - little endian, 32 bit, version 7
fn = os.path.join(self.path, '2001-01-13-1742-24S.KONO__004')
with open(fn, 'rb') as fp:
data = fp.read(80 * 12)
self.assertEqual(_get_version(data), ('<', 32, 7))
# 3 - little endian, 32 bit, version 6
fn = os.path.join(self.path, '2005-07-23-1452-04S.CER___030')
with open(fn, 'rb') as fp:
data = fp.read(80 * 12)
self.assertEqual(_get_version(data), ('<', 32, 6))
def test_is_seisan(self):
"""
Tests SEISAN file check.
"""
# 1 - big endian, 32 bit, version 7
fn = os.path.join(self.path, '1996-06-03-1917-52S.TEST__002')
self.assertTrue(_is_seisan(fn))
# 2 - little endian, 32 bit, version 7
fn = os.path.join(self.path, '2001-01-13-1742-24S.KONO__004')
self.assertTrue(_is_seisan(fn))
# 3 - little endian, 32 bit, version 6
fn = os.path.join(self.path, '2005-07-23-1452-04S.CER___030')
self.assertTrue(_is_seisan(fn))
def test_read_seisan(self):
"""
Test SEISAN file reader.
"""
# 1 - big endian, 32 bit, version 7
fn = os.path.join(self.path, '9701-30-1048-54S.MVO_21_1')
st = _read_seisan(fn)
st.verify()
self.assertEqual(len(st), 21)
self.assertEqual(st[20].stats.network, '')
self.assertEqual(st[20].stats.station, 'MBGB')
self.assertEqual(st[20].stats.location, 'J')
self.assertEqual(st[20].stats.channel, 'SBE')
self.assertEqual(st[20].stats.starttime,
UTCDateTime('1997-01-30T10:48:54.040000Z'))
self.assertEqual(st[20].stats.endtime,
UTCDateTime('1997-01-30T10:49:42.902881Z'))
self.assertAlmostEqual(st[20].stats.sampling_rate, 75.2, 1)
self.assertEqual(st[20].stats.npts, 3675)
self.assertAlmostEqual(st[20].stats.delta, 0.0133, 4)
datafile = os.path.join(self.path, '9701-30-1048-54S.MVO_21_1.ascii')
# compare with ASCII values of trace (extracted ASCII file contains
# less values than the original Seisan file!)
self.assertEqual(st[20].stats.npts, 3675)
self.assertEqual(list(st[20].data[1:3666]),
np.loadtxt(datafile, dtype=np.int32).tolist())
# 2 - little endian, 32 bit, version 7
fn = os.path.join(self.path, '2001-01-13-1742-24S.KONO__004')
st = _read_seisan(fn)
st.verify()
self.assertEqual(len(st), 4)
self.assertEqual(st[0].stats.npts, 6000)
self.assertEqual(list(st[0].data[0:5]), [464, 492, 519, 542, 565])
# 3 - little endian, 32 bit, version 6, 1 channel
fn = os.path.join(self.path, 'D1360930.203')
st = _read_seisan(fn)
st.verify()
self.assertEqual(len(st), 1)
self.assertEqual(st[0].stats.npts, 12000)
self.assertEqual(list(st[0].data[0:5]),
[24, 64, 139, 123, 99])
# 4 - little endian, 32 bit, version 6, 3 channels
fn = os.path.join(self.path, '2005-07-23-1452-04S.CER___030')
st = _read_seisan(fn)
st.verify()
self.assertEqual(len(st), 3)
self.assertEqual(st[0].stats.npts, 10650)
self.assertEqual(list(st[0].data[0:5]),
[7520, 7484, 7482, 7480, 7478])
def test_read_seisan_head_only(self):
"""
Test SEISAN file reader with headonly flag.
"""
# 1 - big endian, 32 bit, version 7
fn = os.path.join(self.path, '9701-30-1048-54S.MVO_21_1')
st = _read_seisan(fn, headonly=True)
self.assertEqual(len(st), 21)
self.assertEqual(st[0].stats.network, '')
self.assertEqual(st[0].stats.station, 'MBGA')
self.assertEqual(st[0].stats.location, 'J')
self.assertEqual(st[0].stats.channel, 'SBZ')
self.assertEqual(st[0].stats.starttime,
UTCDateTime('1997-01-30T10:48:54.040000Z'))
self.assertEqual(st[0].stats.endtime,
UTCDateTime('1997-01-30T10:49:42.902881Z'))
self.assertAlmostEqual(st[0].stats.sampling_rate, 75.2, 1)
self.assertEqual(st[0].stats.npts, 3675)
self.assertAlmostEqual(st[20].stats.delta, 0.0133, 4)
self.assertEqual(list(st[0].data), []) # no data
# 2 - little endian, 32 bit, version 7
fn = os.path.join(self.path, '2001-01-13-1742-24S.KONO__004')
st = _read_seisan(fn, headonly=True)
self.assertEqual(len(st), 4)
self.assertEqual(st[0].stats.network, '')
self.assertEqual(st[0].stats.station, 'KONO')
self.assertEqual(st[0].stats.location, '0')
self.assertEqual(st[0].stats.channel, 'B0Z')
self.assertEqual(st[0].stats.starttime,
UTCDateTime(2001, 1, 13, 17, 45, 1, 999000))
self.assertEqual(st[0].stats.endtime,
UTCDateTime(2001, 1, 13, 17, 50, 1, 949000))
self.assertEqual(st[0].stats.sampling_rate, 20.0)
self.assertEqual(st[0].stats.npts, 6000)
self.assertEqual(list(st[0].data), []) # no data
# 3 - little endian, 32 bit, version 6, 1 channel
fn = os.path.join(self.path, 'D1360930.203')
st = _read_seisan(fn, headonly=True)
self.assertEqual(len(st), 1)
self.assertEqual(st[0].stats.network, '')
self.assertEqual(st[0].stats.station, 'mart')
self.assertEqual(st[0].stats.location, '1')
self.assertEqual(st[0].stats.channel, 'cp')
self.assertEqual(st[0].stats.starttime,
UTCDateTime(2017, 7, 22, 9, 30))
self.assertEqual(st[0].stats.endtime,
UTCDateTime(2017, 7, 22, 9, 31, 59, 990000))
self.assertEqual(st[0].stats.sampling_rate, 100.0)
self.assertEqual(st[0].stats.npts, 12000)
self.assertEqual(list(st[0].data), [])
# 4 - little endian, 32 bit, version 6, 3 channels
fn = os.path.join(self.path, '2005-07-23-1452-04S.CER___030')
st = _read_seisan(fn, headonly=True)
self.assertEqual(len(st), 3)
self.assertEqual(st[0].stats.channel, 'BHZ')
self.assertEqual(st[1].stats.channel, 'BHN')
self.assertEqual(st[2].stats.channel, 'BHE')
for i in range(0, 3):
self.assertEqual(st[i].stats.network, '')
self.assertEqual(st[i].stats.station, 'CER')
self.assertEqual(st[i].stats.location, '')
self.assertEqual(st[i].stats.starttime,
UTCDateTime('2005-07-23T14:52:04.000000Z'))
self.assertEqual(st[i].stats.endtime,
UTCDateTime('2005-07-23T14:53:14.993333Z'))
self.assertEqual(st[i].stats.sampling_rate, 150.0)
self.assertEqual(st[i].stats.npts, 10650)
self.assertEqual(list(st[i].data), [])
def test_read_obspy(self):
"""
Test ObsPy read function and compare against given MiniSEED files.
"""
# 1 - little endian, 32 bit, version 7
st1 = read(os.path.join(self.path,
'2011-09-06-1311-36S.A1032_001BH_Z'))
st2 = read(os.path.join(self.path,
'2011-09-06-1311-36S.A1032_001BH_Z.mseed'))
self.assertEqual(len(st1), len(st2))
self.assertTrue(np.allclose(st1[0].data, st2[0].data))
# 2 - little endian, 32 bit, version 6, 1 channel
st1 = read(os.path.join(self.path, 'D1360930.203'))
st2 = read(os.path.join(self.path, 'D1360930.203.mseed'))
self.assertEqual(len(st1), len(st2))
self.assertTrue(np.allclose(st1[0].data, st2[0].data))
# 3 - little endian, 32 bit, version 6, 3 channels
st1 = read(os.path.join(self.path, '2005-07-23-1452-04S.CER___030'))
st2 = read(os.path.join(self.path,
'2005-07-23-1452-04S.CER___030.mseed'))
self.assertEqual(len(st1), len(st2))
self.assertTrue(np.allclose(st1[0].data, st2[0].data))
self.assertTrue(np.allclose(st1[1].data, st2[1].data))
self.assertTrue(np.allclose(st1[2].data, st2[2].data))
def suite():
return unittest.makeSuite(CoreTestCase, 'test')
if __name__ == '__main__':
unittest.main(defaultTest='suite')