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89 lines
2.5 KiB
Python
89 lines
2.5 KiB
Python
"""
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This module has the mock object definitions used to hold reference geometry
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for the GEOS and GDAL tests.
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"""
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import json
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import os
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from django.utils.functional import cached_property
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# Path where reference test data is located.
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TEST_DATA = os.path.join(os.path.dirname(__file__), 'data')
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def tuplize(seq):
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"Turn all nested sequences to tuples in given sequence."
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if isinstance(seq, (list, tuple)):
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return tuple(tuplize(i) for i in seq)
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return seq
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def strconvert(d):
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"Converts all keys in dictionary to str type."
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return {str(k): v for k, v in d.items()}
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def get_ds_file(name, ext):
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return os.path.join(TEST_DATA,
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name,
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name + '.%s' % ext
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)
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class TestObj:
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"""
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Base testing object, turns keyword args into attributes.
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"""
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def __init__(self, **kwargs):
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for key, value in kwargs.items():
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setattr(self, key, value)
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class TestDS(TestObj):
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"""
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Object for testing GDAL data sources.
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"""
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def __init__(self, name, *, ext='shp', **kwargs):
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# Shapefile is default extension, unless specified otherwise.
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self.ds = get_ds_file(name, ext)
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super().__init__(**kwargs)
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class TestGeom(TestObj):
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"""
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Testing object used for wrapping reference geometry data
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in GEOS/GDAL tests.
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"""
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def __init__(self, *, coords=None, centroid=None, ext_ring_cs=None, **kwargs):
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# Converting lists to tuples of certain keyword args
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# so coordinate test cases will match (JSON has no
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# concept of tuple).
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if coords:
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self.coords = tuplize(coords)
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if centroid:
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self.centroid = tuple(centroid)
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self.ext_ring_cs = ext_ring_cs and tuplize(ext_ring_cs)
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super().__init__(**kwargs)
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class TestGeomSet:
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"""
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Each attribute of this object is a list of `TestGeom` instances.
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"""
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def __init__(self, **kwargs):
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for key, value in kwargs.items():
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setattr(self, key, [TestGeom(**strconvert(kw)) for kw in value])
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class TestDataMixin:
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"""
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Mixin used for GEOS/GDAL test cases that defines a `geometries`
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property, which returns and/or loads the reference geometry data.
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"""
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@cached_property
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def geometries(self):
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# Load up the test geometry data from fixture into global.
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with open(os.path.join(TEST_DATA, 'geometries.json')) as f:
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geometries = json.load(f)
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return TestGeomSet(**strconvert(geometries))
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