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https://github.com/RadioAstronomySoftwareGroup/pyuvdata
05 July 2025, 16:03:44 UTC
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  • test_parameter.py
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Tip revision: c5a1b463f29b8164cda381e97e3d93a549be4179 authored by Bryna Hazelton on 29 April 2020, 15:53:31 UTC
Update changelog for new version, minor changelog correction.
Tip revision: c5a1b46
test_parameter.py
# -*- mode: python; coding: utf-8 -*-
# Copyright (c) 2018 Radio Astronomy Software Group
# Licensed under the 2-clause BSD License

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_array_equality_nans():
    """Test array equality with nans present."""
    param1 = uvp.UVParameter(name="p1", value=np.array([0, 1, np.nan]))
    param2 = uvp.UVParameter(name="p2", value=np.array([0, 1, np.nan]))
    assert param1 == param2


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=(0.1, 0.9)
    )
    assert param1.check_acceptability()[0]
    param1 = uvp.UVParameter(
        name="p1", value=np.random.rand(100) * 1e-4, acceptable_range=(0.1, 0.9)
    )
    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()

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