def setUpClass(cls):
# create common combined header obj so the headers are only read once
# tricker: needs both ifg headers, and DEM one for the extents
filenames = ['r20090713_VV.slc.par', 'r20090817_VV.slc.par']
hdr_paths = [join(GAMMA_TEST_DIR, f) for f in filenames]
hdrs = [gamma.parse_epoch_header(p) for p in hdr_paths]
dem_hdr_path = join(GAMMA_TEST_DIR, 'dem16x20raw.dem.par')
cls.DEM_HDR = gamma.parse_dem_header(dem_hdr_path)
cls.COMBINED = gamma.combine_headers(*hdrs, dem_hdr=cls.DEM_HDR)
def test_combine_headers(self):
filenames = ['r20090713_VV.slc.par', 'r20090817_VV.slc.par']
paths = [join(GAMMA_TEST_DIR, p) for p in filenames]
hdr0, hdr1 = [gamma.parse_epoch_header(p) for p in paths]
chdr = gamma.combine_headers(hdr0, hdr1, self.dh)
exp_timespan = (18 + 17) / ifc.DAYS_PER_YEAR
self.assertEqual(chdr[ifc.PYRATE_TIME_SPAN], exp_timespan)
exp_date = date(2009, 7, 13)
self.assertEqual(chdr[ifc.MASTER_DATE], exp_date)
exp_date2 = date(2009, 8, 17)
self.assertEqual(chdr[ifc.SLAVE_DATE], exp_date2)
exp_wavelen = LIGHTSPEED / 5.3310040e+09
self.assertEqual(chdr[ifc.PYRATE_WAVELENGTH_METRES], exp_wavelen)