def test_clear(self):
md = Metadata()
md.extend([Meta(id='meta1'), Meta(id='meta2'), Meta(id='meta3')])
self.assertEqual(len(md), 3)
md.clear()
self.assertEqual(len(md), 0)
self.assertIs(md.get(0), None)
self.assertIs(md.get('meta1'), None)
def test_clear(self):
md = Metadata()
md.extend([Meta(id='meta1'), Meta(id='meta2'), Meta(id='meta3')])
assert len(md) == 3
md.clear()
assert len(md) == 0
assert md.get(0) is None
assert md.get('meta1') is None
def test_extend(self):
md = Metadata()
self.assertEqual(len(md), 0)
md.extend([Meta(id='meta1')])
self.assertEqual(len(md), 1)
md.extend([])
self.assertEqual(len(md), 1)
md.extend([Meta(id='meta2'), Meta(id='meta3')])
self.assertEqual(len(md), 3)
self.assertEqual(md[0].id, 'meta1')
self.assertEqual(md[1].id, 'meta2')
self.assertEqual(md[2].id, 'meta3')
def test_extend(self):
md = Metadata()
assert len(md) == 0
md.extend([Meta(id='meta1')])
assert len(md) == 1
md.extend([])
assert len(md) == 1
md.extend([Meta(id='meta2'), Meta(id='meta3')])
assert len(md) == 3
assert md[0].id == 'meta1'
assert md[1].id == 'meta2'
assert md[2].id == 'meta3'
