fix test after 'with' statement change
[cython.git] / Cython / Compiler / Tests / TestTreeFragment.py
1 from Cython.TestUtils import CythonTest
2 from Cython.Compiler.TreeFragment import *
3 from Cython.Compiler.Nodes import *
4 from Cython.Compiler.UtilNodes import *
5 import Cython.Compiler.Naming as Naming
6
7 class TestTreeFragments(CythonTest):
8
9     def test_basic(self):
10         F = self.fragment(u"x = 4")
11         T = F.copy()
12         self.assertCode(u"x = 4", T)
13
14     def test_copy_is_taken(self):
15         F = self.fragment(u"if True: x = 4")
16         T1 = F.root
17         T2 = F.copy()
18         self.assertEqual("x", T2.stats[0].if_clauses[0].body.lhs.name)
19         T2.stats[0].if_clauses[0].body.lhs.name = "other"
20         self.assertEqual("x", T1.stats[0].if_clauses[0].body.lhs.name)
21
22     def test_substitutions_are_copied(self):
23         T = self.fragment(u"y + y").substitute({"y": NameNode(pos=None, name="x")})
24         self.assertEqual("x", T.stats[0].expr.operand1.name)
25         self.assertEqual("x", T.stats[0].expr.operand2.name)
26         self.assert_(T.stats[0].expr.operand1 is not T.stats[0].expr.operand2)
27
28     def test_substitution(self):
29         F = self.fragment(u"x = 4")
30         y = NameNode(pos=None, name=u"y")
31         T = F.substitute({"x" : y})
32         self.assertCode(u"y = 4", T)
33
34     def test_exprstat(self):
35         F = self.fragment(u"PASS")
36         pass_stat = PassStatNode(pos=None)
37         T = F.substitute({"PASS" : pass_stat})
38         self.assert_(isinstance(T.stats[0], PassStatNode), T)
39
40     def test_pos_is_transferred(self):
41         F = self.fragment(u"""
42         x = y
43         x = u * v ** w
44         """)
45         T = F.substitute({"v" : NameNode(pos=None, name="a")})
46         v = F.root.stats[1].rhs.operand2.operand1
47         a = T.stats[1].rhs.operand2.operand1
48         self.assertEquals(v.pos, a.pos)
49
50     def test_temps(self):
51         TemplateTransform.temp_name_counter = 0
52         F = self.fragment(u"""
53             TMP
54             x = TMP
55         """)
56         T = F.substitute(temps=[u"TMP"])
57         s = T.body.stats
58         self.assert_(isinstance(s[0].expr, TempRefNode))
59         self.assert_(isinstance(s[1].rhs, TempRefNode))
60         self.assert_(s[0].expr.handle is s[1].rhs.handle)
61
62 if __name__ == "__main__":
63     import unittest
64     unittest.main()