mirror of https://github.com/scrapy/scrapy.git
132 lines
3.3 KiB
Python
132 lines
3.3 KiB
Python
import unittest
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from scrapy.item import Item, Field
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class ItemTest(unittest.TestCase):
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def test_simple(self):
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class TestItem(Item):
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name = Field()
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i = TestItem()
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i['name'] = u'name'
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self.assertEqual(i['name'], u'name')
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def test_init(self):
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class TestItem(Item):
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name = Field()
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i = TestItem()
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self.assertRaises(KeyError, i.__getitem__, 'name')
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i2 = TestItem(name=u'john doe')
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self.assertEqual(i2['name'], u'john doe')
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i3 = TestItem({'name': u'john doe'})
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self.assertEqual(i3['name'], u'john doe')
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i4 = TestItem(i3)
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self.assertEqual(i4['name'], u'john doe')
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self.assertRaises(KeyError, TestItem, {'name': u'john doe',
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'other': u'foo'})
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def test_invalid_field(self):
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class TestItem(Item):
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pass
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i = TestItem()
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self.assertRaises(KeyError, i.__setitem__, 'field', 'text')
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self.assertRaises(KeyError, i.__getitem__, 'field')
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def test_default_value(self):
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class TestItem(Item):
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name = Field(default=u'John')
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i = TestItem()
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self.assertEqual(i['name'], u'John')
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def test_repr(self):
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class TestItem(Item):
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name = Field()
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number = Field()
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i = TestItem()
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i['name'] = u'John Doe'
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i['number'] = 123
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itemrepr = repr(i)
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self.assertEqual(itemrepr,
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"TestItem(name=u'John Doe', number=123)")
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i2 = eval(itemrepr)
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self.assertEqual(i2['name'], 'John Doe')
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self.assertEqual(i2['number'], 123)
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def test_private_attr(self):
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class TestItem(Item):
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name = Field()
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i = TestItem()
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i._private = 'test'
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self.assertEqual(i._private, 'test')
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def test_custom_methods(self):
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class TestItem(Item):
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name = Field()
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def get_name(self):
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return self['name']
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def change_name(self, name):
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self['name'] = name
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i = TestItem()
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self.assertRaises(KeyError, i.get_name)
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i['name'] = u'lala'
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self.assertEqual(i.get_name(), u'lala')
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i.change_name(u'other')
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self.assertEqual(i.get_name(), 'other')
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def test_metaclass(self):
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class TestItem(Item):
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name = Field()
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keys = Field()
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values = Field()
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i = TestItem()
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i['name'] = u'John'
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self.assertEqual(i.keys(), ['name'])
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self.assertEqual(i.values(), ['John'])
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i['keys'] = u'Keys'
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i['values'] = u'Values'
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self.assertEqual(i.keys(), ['keys', 'values', 'name'])
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self.assertEqual(i.values(), [u'Keys', u'Values', u'John'])
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def test_metaclass_inheritance(self):
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class BaseItem(Item):
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name = Field()
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keys = Field()
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values = Field()
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class TestItem(BaseItem):
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keys = Field()
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i = TestItem()
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i['keys'] = 3
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self.assertEqual(i.keys(), ['keys'])
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self.assertEqual(i.values(), [3])
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def test_to_dict(self):
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class TestItem(Item):
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name = Field()
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i = TestItem()
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i['name'] = u'John'
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self.assertEqual(dict(i), {'name': u'John'})
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if __name__ == "__main__":
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unittest.main()
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