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Tests failing on Alpine Linux

See original GitHub issue

Hi, I am trying to compile the pyproj library on Alpine Linux. I filed a few bug fixes with the proj project (and musl libc) that were all fixed enabling the proj library to compile and pass tests on Alpine Linux 32/64b on a number of architectures. I am not having similar luck with pyproj though.

Problem description

Please see the attached build and test log, there are a number of failures:

job.log

Failures

=================================== FAILURES ===================================
_______________________________ test_datum[Proj] _______________________________

proj_class = <class 'pyproj.proj.Proj'>, aoi_data_directory = None

    @pytest.mark.parametrize("proj_class", [Proj, CRS])
    def test_datum(proj_class, aoi_data_directory):
        p1 = proj_class(proj="latlong", datum="WGS84")
        s_1 = -111.5
        s_2 = 45.25919444444
        p2 = proj_class(proj="utm", zone=10, datum="NAD27")
        x2, y2 = transform(p1, p2, s_1, s_2)
        if LooseVersion(proj_version_str) < LooseVersion("6.3.0"):
            assert_almost_equal((x2, y2), (1402291.0833290431, 5076289.591846835))
        else:
            # https://github.com/OSGeo/PROJ/issues/1808
>           assert_almost_equal((x2, y2), (1402285.9829252, 5076292.4212746))
E           AssertionError: 
E           Arrays are not almost equal to 7 decimals
E           
E           Mismatched elements: 2 / 2 (100%)
E           Max absolute difference: 4.21450818
E           Max relative difference: 1.82410064e-06
E            x: array([1402288.540836 , 5076296.6357828])
E            y: array([1402285.9829252, 5076292.4212746])

test/test_datum.py:20: AssertionError
_______________________________ test_datum[CRS] ________________________________

proj_class = <class 'pyproj.crs.crs.CRS'>, aoi_data_directory = None

    @pytest.mark.parametrize("proj_class", [Proj, CRS])
    def test_datum(proj_class, aoi_data_directory):
        p1 = proj_class(proj="latlong", datum="WGS84")
        s_1 = -111.5
        s_2 = 45.25919444444
        p2 = proj_class(proj="utm", zone=10, datum="NAD27")
        x2, y2 = transform(p1, p2, s_1, s_2)
        if LooseVersion(proj_version_str) < LooseVersion("6.3.0"):
            assert_almost_equal((x2, y2), (1402291.0833290431, 5076289.591846835))
        else:
            # https://github.com/OSGeo/PROJ/issues/1808
>           assert_almost_equal((x2, y2), (1402285.9829252, 5076292.4212746))
E           AssertionError: 
E           Arrays are not almost equal to 7 decimals
E           
E           Mismatched elements: 2 / 2 (100%)
E           Max absolute difference: 4.21450818
E           Max relative difference: 1.82410064e-06
E            x: array([1402288.540836 , 5076296.6357828])
E            y: array([1402285.9829252, 5076292.4212746])

test/test_datum.py:20: AssertionError
________________________________ test_doctests _________________________________

aoi_data_directory = None

    def test_doctests(aoi_data_directory):
        """run the examples in the docstrings using the doctest module"""
    
        with warnings.catch_warnings():
            warnings.filterwarnings(
                "ignore",
                "You will likely lose important projection information when",
                UserWarning,
            )
    
            failure_count_proj, test_count = doctest.testmod(pyproj.proj, verbose=True)
            failure_count_crs, test_count_crs = doctest.testmod(pyproj.crs, verbose=True)
            failure_count_geod, test_count_geod = doctest.testmod(pyproj.geod, verbose=True)
            failure_count_transform, test_count_transform = doctest.testmod(
                pyproj.transformer, verbose=True
            )
    
        failure_count = (
            failure_count_proj
            + failure_count_crs
            + failure_count_geod
            + failure_count_transform
        )
        # Missing shapely wheels for Windows, non x86_64 platforms, and python 3.8
        expected_failure_count = 0
        try:
            import shapely  # noqa
        except ImportError:
            if (
                os.name == "nt"
                or platform.uname()[4] != "x86_64"
                or (sys.version_info.major, sys.version_info.minor) >= (3, 8)
            ):
                expected_failure_count = 6
    
        # if the below line fails, doctests have failed
>       assert (
            failure_count == expected_failure_count
        ), "{0} of the doctests in " "lib/pyproj/__init__.py failed".format(failure_count)
E       AssertionError: 9 of the doctests in lib/pyproj/__init__.py failed
E       assert 9 == 6

test/test_doctest_wrapper.py:50: AssertionError

2 items had failures:
   3 of   5 in pyproj.geod.Geod.geometry_area_perimeter
   3 of   5 in pyproj.geod.Geod.geometry_length
2 items had failures:
   1 of   3 in pyproj.transformer.TransformerGroup.__init__
   2 of  19 in pyproj.transformer.transform

FAILED test/test_datum.py::test_datum[Proj] - AssertionError: 
FAILED test/test_datum.py::test_datum[CRS] - AssertionError: 
FAILED test/test_doctest_wrapper.py::test_doctests - AssertionError: 9 of the...
FAILED test/test_transformer.py::test_transform_wgs84_to_alaska - AssertionEr...
FAILED test/test_transformer.py::test_repr - AssertionError: assert '<Concate...
FAILED test/test_transformer.py::test_transformer_group__unavailable - assert...
FAILED test/test_transformer.py::test_transform_group__missing_best - assert ...
FAILED test/crs/test_crs.py::test_coordinate_operation_grids__alternative_grid_name

Expected Output

All tests passing =)

Environment Information

Shown in build log. Errors also occur on other architectures.

(9/39) Installing python3 (3.8.2-r0)
(17/39) Installing proj-datumgrid (7.0.0-r0)
(20/39) Installing proj (7.0.0-r0)
(21/39) Installing proj-dev (7.0.0-r0)