Fix tests on i386

[avalentino]

The test on get_equatorial_crossing_time fails on i386 platforms (see also https://tests.reproducible-builds.org/debian/rb-pkg/bullseye/i386/pyorbital.html)

======================================================================
ERROR: test_get_equatorial_crossing_time (pyorbital.tests.test_orbital.Test)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.8/unittest/mock.py", line 1325, in patched
    return func(*newargs, **newkeywargs)
  File "/build/pyorbital-1.6.0/pyorbital/tests/test_orbital.py", line 189, in test_get_equatorial_crossing_time
    self.assertTrue((res - exp) < timedelta(seconds=0.01))
TypeError: unsupported operand type(s) for -: 'NoneType' and 'datetime.datetime'

----------------------------------------------------------------------
Ran 38 tests in 1.565s

FAILED (errors=1)

This PR should fix the issue.

• Tests passed
• Passes flake8 pyorbital

[coveralls]

Coverage increased (+0.03%) to 86.886% when pulling a86f627 on avalentino:fix-tests-on-i386 into 3ff7a6b on pytroll:master.

[djhoese]

Thanks!

Just curious, what would it mean for you @avalentino if pytroll dropped 32-bit support for some of its packages?

[avalentino]

Just curious, what would it mean for you @avalentino if pytroll dropped 32-bit support for some of its packages?

@djhoese, personally I don't use i386.
The issue has been discovered in the context of the maintenance of the debian package for pyorbital (I'm one of the maintainers).
If I'm not wrong it should be technically possible to support only a restricted set of architectures in debian for a specific package.
Anyway, IMHO, it would be nice to support as much architectures as possible, specially for pure Python packages.

[djhoese]

specially for pure Python packages.

Yes, absolutely.

Mostly just curious if some of the C-using packages (pyresample, python-geotiepoints, etc) were to do something 64-bit only. Anyway, we'll cross that bridge when we come to it.

Thanks again.