def test_get_column_schema__valid_schema_type_but_invalid_schema_column__raises_non_oed_schema_column_error(self, schema_type):
column = np.random.choice([
col for stype, col_dict in get_grouped_master_schema().items()
for col in col_dict
if stype != schema_type
])
with self.assertRaises(NonOedSchemaColumnError):
get_column_schema(schema_type, column)
def test_get_column_schema__valid_reinsscope_column(self, column):
exp_col_schema = self.reinsscope_schema[('reinsscope', column.lower())]
res_col_schema = get_column_schema('reinsscope', column.lower())
self.assertEqual(exp_col_schema, res_col_schema)
def test_get_column_schema__valid_loc_column(self, column):
exp_col_schema = self.loc_schema[('loc', column.lower())]
res_col_schema = get_column_schema('loc', column.lower())
self.assertEqual(exp_col_schema, res_col_schema)
def test_get_column_schema__valid_schema_type_but_invalid_column__raises_non_oed_column_error(self, schema_type, column, random_str):
with self.assertRaises(NonOedColumnError):
get_column_schema(schema_type, column + random_str)
def test_get_column_schema__master_schema_type__raises_oed_error(self, column):
with self.assertRaises(OedError):
get_column_schema('master', column)
def sample_column(schema_type, header, str_width=None, size=10):
"""
Sampling values in a given column in a given schema (``acc``, ``loc``,
``reinsinfo``, ``reinsscope``), consistent with the validation method
for the column (if there is one), or with the column range (if a column
range is defined), or with the data type range.
:param schema_type: OED schema type indicator (``master``, ``loc``,
``acc``, ``reinsinfo``, or ``reinsscope``)
:type schema_type: str
:param header: The column header
:type column: str
:param str_width: Optional argument applicable only to string type columns
with no defined column range and/or validation method. If
applicable this option sets a fixed width for the
individual string values sampled for the column
:type str_width: int
:param size: Number of values to sample
:type size: int
:return: Sampled values
:rtype: list
"""
if size <= 0:
size = 10
col_schema = get_column_schema(schema_type, header)
if col_schema['py_dtype'] is None:
return
py_dtype = getattr(builtins, col_schema['py_dtype'])
dtype_range = col_schema['dtype_range']
column_range = col_schema['column_range']
use_range = column_range or dtype_range
try:
sampling_info = json.loads(col_schema['column_sampling'])
except (JSONDecodeError, TypeError, ValueError):
sampling_info = sampling_func = None
else:
sampling_func = get_method(sampling_info['func'])
if py_dtype in [
int, float, str
] and column_range is not None and sampling_func is not None:
return [
sampling_func(column_range, *sampling_info['args'][1:])
for i in range(size)
]
elif py_dtype is int:
return (np.random.randint(
use_range.start, use_range.stop, size=size).tolist() if isinstance(
use_range, range) else np.random.choice(use_range,
size=size).tolist())
elif py_dtype is float:
return (np.random.uniform(max(min(use_range), -1.79e+307),
min(max(use_range), +1.79e+307),
size=size).tolist())
elif py_dtype is str and column_range is not None and sampling_func is None:
return [np.random.choice(column_range) for i in range(size)]
elif py_dtype is str and column_range is None:
return [
''.join(
np.random.choice(list(string.ascii_letters + string.digits),
size=(str_width or 20))) for i in range(size)
]