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import pytest
from pyfdb import FDB
def test_retrieve(read_only_fdb_setup):
fdb = FDB(read_only_fdb_setup)
selection = {
"type": "an",
"class": "ea",
"domain": "g",
"expver": "0001",
"stream": "oper",
"date": "20200101",
"levtype": "sfc",
"step": "0",
"param": ["167", "165", "166"],
"time": "1800",
}
data_handle = fdb.retrieve(selection)
assert data_handle
data_handle.open()
assert data_handle.read(4) == b"GRIB"
data_handle.close()
def test_retrieve_wildcard(read_only_fdb_setup):
fdb = FDB(read_only_fdb_setup)
with pytest.raises(TypeError):
_ = fdb.retrieve({})
def test_retrieve_context_manager(read_only_fdb_setup):
fdb = FDB(read_only_fdb_setup)
selection = {
"type": "an",
"class": "ea",
"domain": "g",
"expver": "0001",
"stream": "oper",
"date": "20200101",
"levtype": "sfc",
"step": "0",
"param": ["167", "165", "166"],
"time": "1800",
}
with fdb.retrieve(selection) as data_handle:
assert data_handle
assert data_handle.read(4) == b"GRIB"
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