| |
| """ |
| 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() |
|
|
| |
| |
| 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') |
|
|
| |
| 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 |
|
|
