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lossyroblossyrob
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Merge pull request #211 from schwehr/link-test
test_link.py: Add more tests and cleanup
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‎tests/test_link.py

Lines changed: 178 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -1,24 +1,192 @@
1-
from datetime import datetime
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import datetime
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import unittest
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import pystac
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from tests.utils import (RANDOM_BBOX, RANDOM_GEOM)
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7-
TEST_DATETIME = datetime(2020, 3, 14, 16, 32)
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TEST_DATETIME: datetime.datetime = datetime.datetime(2020, 3, 14, 16, 32)
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class LinkTest(unittest.TestCase):
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item: pystac.Item
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def setUp(self):
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self.item = pystac.Item(id='test-item',
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geometry=None,
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bbox=None,
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datetime=TEST_DATETIME,
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properties={})
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def test_minimal(self):
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rel = 'my rel'
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target = 'https://example.com/a/b'
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link = pystac.Link(rel, target)
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self.assertEqual(target, link.get_href())
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self.assertEqual(target, link.get_absolute_href())
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expected_repr = f'<Link rel={rel} target={target}>'
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self.assertEqual(expected_repr, link.__repr__())
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self.assertFalse(link.is_resolved())
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expected_dict = {'rel': rel, 'href': target}
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self.assertEqual(expected_dict, link.to_dict())
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# Run the same tests on the clone.
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clone = link.clone()
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self.assertNotEqual(link, clone)
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self.assertEqual(target, clone.get_href())
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self.assertEqual(target, clone.get_absolute_href())
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self.assertEqual(expected_repr, clone.__repr__())
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self.assertEqual(expected_dict, clone.to_dict())
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# Try the modification methods.
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self.assertIsNone(link.owner)
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link.set_owner(1) # A junk value.
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self.assertEqual(1, link.owner)
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link.set_owner(None)
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self.assertIsNone(link.owner)
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self.assertEqual(pystac.LinkType.ABSOLUTE, link.link_type)
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link.make_absolute()
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self.assertEqual(pystac.LinkType.ABSOLUTE, link.link_type)
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self.assertEqual(target, link.get_href())
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self.assertEqual(target, link.get_absolute_href())
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link.make_relative()
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self.assertEqual(pystac.LinkType.RELATIVE, link.link_type)
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self.assertEqual(target, link.get_href())
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self.assertEqual(target, link.get_absolute_href())
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link.set_owner(self.item)
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self.assertEqual(self.item, link.owner)
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def test_relative(self):
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rel = 'my rel'
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target = '../elsewhere'
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mime_type = 'example/stac_thing'
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link = pystac.Link(rel,
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target,
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mime_type,
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'a title',
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properties={'a': 'b'},
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link_type=pystac.LinkType.RELATIVE)
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expected_dict = {
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'rel': rel,
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'href': target,
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'type': 'example/stac_thing',
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'title': 'a title',
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'a': 'b'
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}
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self.assertEqual(expected_dict, link.to_dict())
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self.assertEqual(pystac.LinkType.RELATIVE, link.link_type)
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def test_link_does_not_fail_if_href_is_none(self):
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"""Test to ensure get_href does not fail when the href is None"""
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"""Test to ensure get_href does not fail when the href is None."""
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catalog = pystac.Catalog(id='test', description='test desc')
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item = pystac.Item(id='test-item',
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geometry=RANDOM_GEOM,
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bbox=RANDOM_BBOX,
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datetime=datetime.utcnow(),
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properties={})
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catalog.add_item(item)
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catalog.add_item(self.item)
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catalog.set_self_href('/some/href')
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catalog.make_all_links_relative()
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link = catalog.get_single_link('item')
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self.assertIsNone(link.get_href())
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def test_resolve_stac_object_no_root_and_target_is_item(self):
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link = pystac.Link('my rel', target=self.item)
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link.resolve_stac_object()
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class StaticLinkTest(unittest.TestCase):
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def test_from_dict_round_trip(self):
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test_cases = [
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{
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'rel': '',
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'href': ''
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}, # Not valid, but works.
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{
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'rel': 'r',
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'href': 't'
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},
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{
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'rel': 'r',
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'href': '/t'
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},
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{
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'rel': 'r',
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'href': 't',
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'type': 'a/b',
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'title': 't',
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'c': 'd',
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1: 2
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},
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# Special case.
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{
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'rel': 'self',
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'href': 't'
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},
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]
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for d in test_cases:
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d2 = pystac.Link.from_dict(d).to_dict()
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self.assertEqual(d, d2)
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def test_from_dict_link_type(self):
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test_cases = [
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({
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'rel': '',
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'href': 'https://a'
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}, pystac.LinkType.ABSOLUTE),
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({
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'rel': '',
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'href': '/a'
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}, pystac.LinkType.ABSOLUTE),
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({
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'rel': '',
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'href': 'a'
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}, pystac.LinkType.RELATIVE),
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({
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'rel': '',
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'href': './a'
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}, pystac.LinkType.RELATIVE),
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# 'self' is a special case.
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({
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'rel': 'self',
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'href': 'does not matter'
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}, pystac.LinkType.ABSOLUTE),
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]
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for case in test_cases:
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item = pystac.Link.from_dict(case[0])
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self.assertEqual(case[1], item.link_type)
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def test_from_dict_failures(self):
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for d in [{}, {'href': 't'}, {'rel': 'r'}]:
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with self.assertRaises(KeyError):
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pystac.Link.from_dict(d)
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for d in [
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{
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'rel': '',
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'href': 1
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},
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{
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'rel': '',
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'href': None
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},
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]:
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with self.assertRaises(AttributeError):
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pystac.Link.from_dict(d)
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def test_collection(self):
183+
c = pystac.Collection('collection id', 'desc', extent=None)
184+
link = pystac.Link.collection(c)
185+
expected = {'rel': 'collection', 'href': None, 'type': 'application/json'}
186+
self.assertEqual(expected, link.to_dict())
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188+
def test_child(self):
189+
c = pystac.Collection('collection id', 'desc', extent=None)
190+
link = pystac.Link.child(c)
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expected = {'rel': 'child', 'href': None, 'type': 'application/json'}
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self.assertEqual(expected, link.to_dict())

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