def _test_srtm_retrieve(Source, read_SRTM, max_, min_, pt):
# test that the download mechanism for SRTM works
with download_to_temp() as tmp_dir:
with warnings.catch_warnings(record=True) as w:
r = Source().srtm_fname(-4, 50)
assert len(w) == 1
assert issubclass(w[0].category, cartopy.io.DownloadWarning)
assert r.startswith(tmp_dir), 'File not downloaded to tmp dir'
img, _, _ = read_SRTM(r)
# check that the data is fairly sensible
msg = 'SRTM data has changed. Arbitrary value testing failed. Got {}.'
assert img.max() == max_, msg.format(img.max())
assert img.min() == min_, msg.format(img.min())
assert img[-10, 12] == pt, msg.format(img[-10, 12])
def _test_srtm_retrieve(Source, read_SRTM, max_, min_, pt):
# test that the download mechanism for SRTM works
with download_to_temp() as tmp_dir:
with warnings.catch_warnings(record=True) as w:
r = Source().srtm_fname(-4, 50)
assert len(w) == 1
assert issubclass(w[0].category, cartopy.io.DownloadWarning)
assert r.startswith(tmp_dir), 'File not downloaded to tmp dir'
img, _, _ = read_SRTM(r)
# check that the data is fairly sensible
msg = 'SRTM data has changed. Arbitrary value testing failed. Got {}.'
assert img.max() == max_, msg.format(img.max())
assert img.min() == min_, msg.format(img.min())
assert img[-10, 12] == pt, msg.format(img[-10, 12])
def test_srtm3_retrieve():
# test that the download mechanism for srtm3 works
with download_to_temp() as tmp_dir:
with warnings.catch_warnings(record=True) as w:
r = cartopy.io.srtm.SRTM3_retrieve(-4, 50)
assert len(w) == 1
assert issubclass(w[0].category, cartopy.io.DownloadWarning)
assert r.startswith(tmp_dir), 'File not downloaded to tmp dir'
img, _, _ = cartopy.io.srtm.read_SRTM3(r)
# check that the data is fairly sensible
msg = 'srtm data has changed. arbitrary value testing failed.'
assert img.max() == 602, msg
assert img.min() == -32768, msg
assert img[-10, 12] == 78, msg + 'Got {}'.format(img[-10, 12])
