| import numpy as np |
|
|
| from astropy.table import np_utils |
|
|
|
|
| def test_common_dtype(): |
| """ |
| Test that allowed combinations are those expected. |
| """ |
| dtype = [(str('int'), int), |
| (str('uint8'), np.uint8), |
| (str('float32'), np.float32), |
| (str('float64'), np.float64), |
| (str('str'), 'S2'), |
| (str('uni'), 'U2'), |
| (str('bool'), bool), |
| (str('object'), np.object_)] |
| arr = np.empty(1, dtype=dtype) |
| fail = set() |
| succeed = set() |
| for name1, type1 in dtype: |
| for name2, type2 in dtype: |
| try: |
| np_utils.common_dtype([arr[name1], arr[name2]]) |
| succeed.add('{0} {1}'.format(name1, name2)) |
| except np_utils.TableMergeError: |
| fail.add('{0} {1}'.format(name1, name2)) |
|
|
| |
| bad = set(['str int', 'str bool', 'uint8 bool', 'uint8 str', 'object float32', |
| 'bool object', 'uni uint8', 'int str', 'bool str', 'bool float64', |
| 'bool uni', 'str float32', 'uni float64', 'uni object', 'bool uint8', |
| 'object float64', 'float32 bool', 'str uint8', 'uni bool', 'float64 bool', |
| 'float64 object', 'int bool', 'uni int', 'uint8 object', 'int uni', 'uint8 uni', |
| 'float32 uni', 'object uni', 'bool float32', 'uni float32', 'object str', |
| 'int object', 'str float64', 'object int', 'float64 uni', 'bool int', |
| 'object bool', 'object uint8', 'float32 object', 'str object', 'float64 str', |
| 'float32 str']) |
| assert fail == bad |
|
|
| good = set(['float64 int', 'int int', 'uint8 float64', 'uint8 int', 'str uni', |
| 'float32 float32', 'float64 float64', 'float64 uint8', 'float64 float32', |
| 'int uint8', 'int float32', 'uni str', 'int float64', 'uint8 float32', |
| 'float32 int', 'float32 uint8', 'bool bool', 'uint8 uint8', 'str str', |
| 'float32 float64', 'object object', 'uni uni']) |
| assert succeed == good |
|
|
