1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
import unittest
from test import test_support
# Silence Py3k warning
test_support.import_module('compiler', deprecated=True)
from compiler import transformer, ast
from compiler import compile
class Tests(unittest.TestCase):
def testMultipleLHS(self):
""" Test multiple targets on the left hand side. """
snippets = ['a, b = 1, 2',
'(a, b) = 1, 2',
'((a, b), c) = (1, 2), 3']
for s in snippets:
a = transformer.parse(s)
self.assertIsInstance(a, ast.Module)
child1 = a.getChildNodes()[0]
self.assertIsInstance(child1, ast.Stmt)
child2 = child1.getChildNodes()[0]
self.assertIsInstance(child2, ast.Assign)
# This actually tests the compiler, but it's a way to assure the ast
# is correct
c = compile(s, '<string>', 'single')
vals = {}
exec c in vals
assert vals['a'] == 1
assert vals['b'] == 2
def test_main():
test_support.run_unittest(Tests)
if __name__ == "__main__":
test_main()
|
