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7ffff7d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | # Licensed under a 3-clause BSD style license - see LICENSE.rst
"""
Some might be indirectly tested already in ``astropy.io.fits.tests``.
"""
import io
import numpy as np
import pytest
from astropy.utils.diff import diff_values, report_diff_values, where_not_allclose
from astropy.table import Table
@pytest.mark.parametrize('a', [np.nan, np.inf, 1.11, 1, 'a'])
def test_diff_values_false(a):
assert not diff_values(a, a)
@pytest.mark.parametrize(
('a', 'b'),
[(np.inf, np.nan), (1.11, 1.1), (1, 2), (1, 'a'), ('a', 'b')])
def test_diff_values_true(a, b):
assert diff_values(a, b)
def test_float_comparison():
"""
Regression test for https://github.com/spacetelescope/PyFITS/issues/21
"""
f = io.StringIO()
a = np.float32(0.029751372)
b = np.float32(0.029751368)
identical = report_diff_values(a, b, fileobj=f)
assert not identical
out = f.getvalue()
# This test doesn't care about what the exact output is, just that it
# did show a difference in their text representations
assert 'a>' in out
assert 'b>' in out
def test_diff_types():
"""
Regression test for https://github.com/astropy/astropy/issues/4122
"""
f = io.StringIO()
a = 1.0
b = '1.0'
identical = report_diff_values(a, b, fileobj=f)
assert not identical
out = f.getvalue()
assert out == (" (float) a> 1.0\n"
" (str) b> '1.0'\n"
" ? + +\n")
def test_diff_numeric_scalar_types():
""" Test comparison of different numeric scalar types. """
f = io.StringIO()
assert not report_diff_values(1.0, 1, fileobj=f)
out = f.getvalue()
assert out == ' (float) a> 1.0\n (int) b> 1\n'
def test_array_comparison():
"""
Test diff-ing two arrays.
"""
f = io.StringIO()
a = np.arange(9).reshape(3, 3)
b = a + 1
identical = report_diff_values(a, b, fileobj=f)
assert not identical
out = f.getvalue()
assert out == (' at [0, 0]:\n'
' a> 0\n'
' b> 1\n'
' at [0, 1]:\n'
' a> 1\n'
' b> 2\n'
' at [0, 2]:\n'
' a> 2\n'
' b> 3\n'
' ...and at 6 more indices.\n')
def test_diff_shaped_array_comparison():
"""
Test diff-ing two differently shaped arrays.
"""
f = io.StringIO()
a = np.empty((1, 2, 3))
identical = report_diff_values(a, a[0], fileobj=f)
assert not identical
out = f.getvalue()
assert out == (' Different array shapes:\n'
' a> (1, 2, 3)\n'
' ? ---\n'
' b> (2, 3)\n')
def test_tablediff():
"""
Test diff-ing two simple Table objects.
"""
a = Table.read("""name obs_date mag_b mag_v
M31 2012-01-02 17.0 16.0
M82 2012-10-29 16.2 15.2
M101 2012-10-31 15.1 15.5""", format='ascii')
b = Table.read("""name obs_date mag_b mag_v
M31 2012-01-02 17.0 16.5
M82 2012-10-29 16.2 15.2
M101 2012-10-30 15.1 15.5
NEW 2018-05-08 nan 9.0""", format='ascii')
f = io.StringIO()
identical = report_diff_values(a, b, fileobj=f)
assert not identical
out = f.getvalue()
assert out == (' name obs_date mag_b mag_v\n'
' ---- ---------- ----- -----\n'
' a> M31 2012-01-02 17.0 16.0\n'
' ? ^\n'
' b> M31 2012-01-02 17.0 16.5\n'
' ? ^\n'
' M82 2012-10-29 16.2 15.2\n'
' a> M101 2012-10-31 15.1 15.5\n'
' ? ^\n'
' b> M101 2012-10-30 15.1 15.5\n'
' ? ^\n'
' b> NEW 2018-05-08 nan 9.0\n')
# Identical
assert report_diff_values(a, a, fileobj=f)
@pytest.mark.parametrize('kwargs', [{}, {'atol': 0, 'rtol': 0}])
def test_where_not_allclose(kwargs):
a = np.array([1, np.nan, np.inf, 4.5])
b = np.array([1, np.inf, np.nan, 4.6])
assert where_not_allclose(a, b, **kwargs) == ([3], )
assert len(where_not_allclose(a, a, **kwargs)[0]) == 0
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