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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
import unittest
import ast
import gast
import sys
def dump(node):
return gast.dump(node, show_empty=True)
class APITestCase(unittest.TestCase):
def test_literal_eval_string(self):
code = "1, 3"
self.assertEqual(ast.literal_eval(code),
gast.literal_eval(code))
def test_literal_eval_code(self):
code = "[1, 3]"
tree = ast.parse(code, mode='eval')
gtree = gast.parse(code, mode='eval')
self.assertEqual(ast.literal_eval(tree),
gast.literal_eval(gtree))
def test_parse(self):
code = '''
def foo(x=1, *args, **kwargs):
return x + y +len(args) + len(kwargs)
'''
gast.parse(code)
def test_unparse(self):
code = 'def foo(x=1): return x'
self.assertEqual(gast.unparse(gast.parse(code)),
'def foo(x=1):\n return x')
def test_dump(self):
code = 'lambda x: x'
tree = gast.parse(code, mode='eval')
zdump = dump(tree)
norm = ("Expression(body=Lambda(args=arguments(args=[Name("
"id='x', ctx=Param(), "
"annotation=None, type_comment=None)], posonlyargs=[], "
"vararg=None, kwonlyargs=[], kw_defaults=[], kwarg=None, "
"defaults=[]), body=Name(id='x', ctx=Load(), "
"annotation=None, type_comment=None)"
"))")
self.assertEqual(zdump, norm)
def test_walk(self):
code = 'x + 1'
tree = gast.parse(code, mode='eval')
zdump = dump(tree)
norm = ("Expression(body=BinOp(left=Name(id='x', ctx=Load(), "
"annotation=None, type_comment=None), op=Add(), "
"right=Constant(value=1, kind=None)))")
self.assertEqual(zdump, norm)
self.assertEqual(len(list(gast.walk(tree))), 6)
def test_iter_fields(self):
tree = gast.Constant(value=1, kind=None)
self.assertEqual({name for name, _ in gast.iter_fields(tree)},
{'value', 'kind'})
def test_iter_child_nodes(self):
tree = gast.UnaryOp(gast.USub(), gast.Constant(value=1, kind=None))
self.assertEqual(len(list(gast.iter_fields(tree))),
2)
def test_increment_lineno(self):
tree = gast.Constant(value=1, kind=None)
tree.lineno = 1
gast.increment_lineno(tree)
self.assertEqual(tree.lineno, 2)
def test_get_docstring(self):
code = 'def foo(): "foo"'
tree = gast.parse(code)
func = tree.body[0]
docs = gast.get_docstring(func)
self.assertEqual(docs, "foo")
def test_copy_location(self):
tree = gast.Constant(value=1, kind=None)
tree.lineno = 1
tree.col_offset = 2
node = gast.Constant(value=2, kind=None)
gast.copy_location(node, tree)
self.assertEqual(node.lineno, tree.lineno)
self.assertEqual(node.col_offset, tree.col_offset)
def test_fix_missing_locations(self):
node = gast.Constant(value=6, kind=None)
tree = gast.UnaryOp(gast.USub(), node)
tree.lineno = 1
tree.col_offset = 2
gast.fix_missing_locations(tree)
self.assertEqual(node.lineno, tree.lineno)
self.assertEqual(node.col_offset, tree.col_offset)
def test_NodeTransformer(self):
node = gast.Constant(value=6, kind=None)
tree = gast.UnaryOp(gast.USub(), node)
class Trans(gast.NodeTransformer):
def visit_Constant(self, node):
node.value *= 2
return node
tree = Trans().visit(tree)
self.assertEqual(node.value, 12)
def test_NodeVisitor(self):
node = gast.Constant(value=6, kind=None)
tree = gast.UnaryOp(gast.USub(), node)
class Vis(gast.NodeTransformer):
def __init__(self):
self.state = []
def visit_Constant(self, node):
self.state.append(node.value)
vis = Vis()
vis.visit(tree)
self.assertEqual(vis.state, [6])
def test_NodeConstructor(self):
node0 = gast.Name()
load = gast.Load()
node1 = gast.Name('id', load, None, None)
node2 = gast.Name('id', load, None, type_comment=None)
with self.assertRaises(TypeError):
node1 = gast.Name('id', 'ctx', 'annotation', 'type_comment',
'random_field')
for field in gast.Name._fields:
self.assertEqual(getattr(node1, field), getattr(node2, field))
if __name__ == '__main__':
unittest.main()
|
