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classes_test.py
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classes_test.py
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from pytype.rewrite.abstract import classes
from pytype.rewrite.abstract import functions
from pytype.rewrite.tests import test_utils
import unittest
class ClassTest(test_utils.ContextfulTestBase):
def test_get_attribute(self):
x = self.ctx.consts[5]
cls = classes.SimpleClass(self.ctx, 'X', {'x': x})
self.assertEqual(cls.get_attribute('x'), x)
def test_get_nonexistent_attribute(self):
cls = classes.SimpleClass(self.ctx, 'X', {})
self.assertIsNone(cls.get_attribute('x'))
def test_get_parent_attribute(self):
x = self.ctx.consts[5]
parent = classes.SimpleClass(self.ctx, 'Parent', {'x': x})
child = classes.SimpleClass(self.ctx, 'Child', {}, bases=[parent])
self.assertEqual(child.get_attribute('x'), x)
def test_instantiate(self):
cls = classes.SimpleClass(self.ctx, 'X', {})
instance = cls.instantiate()
self.assertEqual(instance.cls, cls)
def test_call(self):
cls = classes.SimpleClass(self.ctx, 'X', {})
instance = cls.call(functions.Args()).get_return_value()
self.assertEqual(instance.cls, cls)
def test_mro(self):
parent = classes.SimpleClass(self.ctx, 'Parent', {})
child = classes.SimpleClass(self.ctx, 'Child', {}, bases=[parent])
self.assertEqual(child.mro(), [child, parent, self.ctx.types[object]])
class MutableInstanceTest(test_utils.ContextfulTestBase):
def test_get_instance_attribute(self):
cls = classes.SimpleClass(self.ctx, 'X', {})
instance = classes.MutableInstance(self.ctx, cls)
instance.members['x'] = self.ctx.consts[3]
self.assertEqual(instance.get_attribute('x'), self.ctx.consts[3])
def test_get_class_attribute(self):
cls = classes.SimpleClass(
self.ctx, 'X', {'x': self.ctx.consts[3]})
instance = classes.MutableInstance(self.ctx, cls)
self.assertEqual(instance.get_attribute('x'), self.ctx.consts[3])
def test_set_attribute(self):
cls = classes.SimpleClass(self.ctx, 'X', {})
instance = classes.MutableInstance(self.ctx, cls)
instance.set_attribute('x', self.ctx.consts[3])
self.assertEqual(instance.members['x'], self.ctx.consts[3])
class FrozenInstanceTest(test_utils.ContextfulTestBase):
def test_get_attribute(self):
cls = classes.SimpleClass(self.ctx, 'X', {})
mutable_instance = classes.MutableInstance(self.ctx, cls)
mutable_instance.set_attribute('x', self.ctx.consts[3])
instance = mutable_instance.freeze()
self.assertEqual(instance.get_attribute('x'), self.ctx.consts[3])
class ModuleTest(test_utils.ContextfulTestBase):
def test_instance_attribute(self):
attr = classes.Module(self.ctx, 'os').get_attribute('name')
self.assertIsInstance(attr, classes.FrozenInstance)
self.assertEqual(attr.cls.name, 'str')
def test_class_attribute(self):
attr = classes.Module(self.ctx, 'os').get_attribute('__name__')
self.assertIsInstance(attr, classes.FrozenInstance)
self.assertEqual(attr.cls.name, 'str')
def test_submodule(self):
attr = classes.Module(self.ctx, 'os').get_attribute('path')
self.assertIsInstance(attr, classes.Module)
self.assertEqual(attr.name, 'os.path')
if __name__ == '__main__':
unittest.main()