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TST: test_noncelestial_scale emits RuntimeWarning for some cases #9310

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TST: test_noncelestial_scale emits RuntimeWarning for some cases#9310
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testingwcs
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@pllim
pllim
opened on Oct 2, 2019

Description

Some test cases fed into test_noncelestial_scale in astropy.wcs.test_utils emit RuntimeWarning. Affected code:

astropy/astropy/wcs/tests/test_utils.py

Lines 564 to 570 in f7a98a0

mywcs.wcs.cdelt = cdelt
mywcs.wcs.ctype = ['RA---TAN', 'FREQ']
ps = non_celestial_pixel_scales(mywcs)
assert_almost_equal(ps.to_value(u.deg), np.array([0.1, 0.2]))

xref #9010 (review)

Expected behavior

Tests complete without RuntimeWarning.

Actual behavior

RuntimeWarning happens when you set pytest to show warnings.

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