test_parameter.py
# -*- mode: python; coding: utf-8 -*-
# Copyright (c) 2018 Radio Astronomy Software Group
# Licensed under the 2-clause BSD License
from __future__ import absolute_import, division, print_function
import pytest
import numpy as np
from pyuvdata import parameter as uvp
from pyuvdata.uvbase import UVBase
def test_class_inequality():
"""Test equality error for different uvparameter classes."""
param1 = uvp.UVParameter(name='p1', value=1)
param2 = uvp.AngleParameter(name='p2', value=1)
assert param1 != param2
def test_value_class_inequality():
"""Test equality error for different uvparameter classes."""
param1 = uvp.UVParameter(name='p1', value=3)
param2 = uvp.UVParameter(name='p2', value=np.array([3, 4, 5]))
assert param1 != param2
assert param2 != param1
param3 = uvp.UVParameter(name='p2', value='Alice')
assert param1 != param3
def test_array_inequality():
"""Test equality error for different array values."""
param1 = uvp.UVParameter(name='p1', value=np.array([0, 1, 3]))
param2 = uvp.UVParameter(name='p2', value=np.array([0, 2, 4]))
assert param1 != param2
param3 = uvp.UVParameter(name='p3', value=np.array([0, 1]))
assert param1 != param3
def test_string_inequality():
"""Test equality error for different string values."""
param1 = uvp.UVParameter(name='p1', value='Alice')
param2 = uvp.UVParameter(name='p2', value='Bob')
assert param1 != param2
def test_string_list_inequality():
"""Test equality error for different string values."""
param1 = uvp.UVParameter(name='p1', value=['Alice', 'Eve'])
param2 = uvp.UVParameter(name='p2', value=['Bob', 'Eve'])
assert param1 != param2
def test_string_equality():
"""Test equality error for different string values."""
param1 = uvp.UVParameter(name='p1', value='Alice')
param2 = uvp.UVParameter(name='p2', value='Alice')
assert param1 == param2
def test_integer_inequality():
"""Test equality error for different non-array, non-string values."""
param1 = uvp.UVParameter(name='p1', value=1)
param2 = uvp.UVParameter(name='p2', value=2)
assert param1 != param2
def test_dict_equality():
"""Test equality for dict values."""
param1 = uvp.UVParameter(name='p1', value={'v1': 1})
param2 = uvp.UVParameter(name='p2', value={'v1': 1})
assert param1 == param2
def test_dict_inequality_int():
"""Test equality error for integer dict values."""
param1 = uvp.UVParameter(name='p1', value={'v1': 1, 's1': 'test'})
param2 = uvp.UVParameter(name='p2', value={'v1': 2, 's1': 'test'})
assert param1 != param2
def test_dict_inequality_str():
"""Test equality error for string dict values."""
param1 = uvp.UVParameter(name='p1', value={'v1': 1, 's1': 'test'})
param4 = uvp.UVParameter(name='p3', value={'v1': 1, 's1': 'foo'})
assert param1 != param4
def test_dict_inequality_keys():
"""Test equality error for different keys."""
param1 = uvp.UVParameter(name='p1', value={'v1': 1, 's1': 'test'})
param3 = uvp.UVParameter(name='p3', value={'v3': 1, 's1': 'test'})
assert param1 != param3
def test_equality_check_fail():
"""Test equality error for non string, dict or array values."""
param1 = uvp.UVParameter(name='p1', value=uvp.UVParameter(name='p1', value='Alice'))
param2 = uvp.UVParameter(name='p2', value=uvp.UVParameter(name='p1', value='Bob'))
assert param1 != param2
def test_notclose():
"""Test equality error for values not with tols."""
param1 = uvp.UVParameter(name='p1', value=1.0)
param2 = uvp.UVParameter(name='p2', value=1.001)
assert param1 != param2
def test_close():
"""Test equality error for values within tols."""
param1 = uvp.UVParameter(name='p1', value=1.0)
param2 = uvp.UVParameter(name='p2', value=1.000001)
assert param1 == param2
def test_acceptability():
"""Test check_acceptability function."""
param1 = uvp.UVParameter(name='p1', value=1000, acceptable_range=(1, 10))
assert not param1.check_acceptability()[0]
param1 = uvp.UVParameter(name='p1', value=np.random.rand(100), acceptable_range=(.1, .9))
assert param1.check_acceptability()[0]
param1 = uvp.UVParameter(name='p1', value=np.random.rand(100) * 1e-4, acceptable_range=(.1, .9))
assert not param1.check_acceptability()[0]
param2 = uvp.UVParameter(name='p2', value=5, acceptable_range=(1, 10))
assert param2.check_acceptability()[0]
param2 = uvp.UVParameter(name='p2', value=5, acceptable_vals=[1, 10])
assert not param2.check_acceptability()[0]
def test_string_acceptability():
"""Test check_acceptability function with strings."""
param1 = uvp.UVParameter(name='p1', value='Bob', form='str',
acceptable_vals=['Alice', 'Eve'])
assert not param1.check_acceptability()[0]
param2 = uvp.UVParameter(name='p2', value='Eve', form='str',
acceptable_vals=['Alice', 'Eve'])
assert param2.check_acceptability()[0]
def test_expected_shape():
"""Test missing shape param."""
class TestUV(UVBase):
def __init__(self):
self._p1 = uvp.UVParameter(name='p1', required=False)
self._p2 = uvp.UVParameter(name='p2', form=('p1',))
self._p3 = uvp.UVParameter(name='p3', form=(2,))
super(TestUV, self).__init__()
obj = TestUV()
obj.p2 = np.array([0, 5, 8])
obj.p3 = np.array([4, 9])
pytest.raises(ValueError, obj.check)
assert obj._p3.expected_shape(obj) == (2,)
def test_angle_set_degree_none():
param1 = uvp.AngleParameter(name='p2', value=1)
param1.set_degrees(None)
assert param1.value is None
def test_location_set_lat_lon_alt_none():
param1 = uvp.LocationParameter(name='p2', value=1)
param1.set_lat_lon_alt(None)
assert param1.value is None
def test_location_set_lat_lon_alt_degrees_none():
param1 = uvp.LocationParameter(name='p2', value=1)
param1.set_lat_lon_alt_degrees(None)
assert param1.value is None
def test_location_acceptable_none():
param1 = uvp.LocationParameter(name='p2', value=1, acceptable_range=None)
assert param1.check_acceptability()