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
|
# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
#
from textwrap import dedent
from typing import Dict
import libcst as cst
from libcst.codemod import (
Codemod,
CodemodContext,
CodemodTest,
SkipFile,
transform_module,
TransformExit,
TransformFailure,
TransformSkip,
TransformSuccess,
)
class TestRunner(CodemodTest):
def test_runner_default(self) -> None:
before = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
after = """
# A comment
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
self.warn("Testing")
return tree.with_changes(
header=[cst.EmptyLine(comment=cst.Comment("# A comment"))]
)
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(before))
self.assertIsInstance(response, TransformSuccess)
assert isinstance(response, TransformSuccess)
self.assertCodeEqual(response.code, after)
self.assertEqual(response.warning_messages, ["Testing"])
def test_runner_interrupted(self) -> None:
code = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
raise KeyboardInterrupt("Testing")
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(code))
self.assertIsInstance(response, TransformExit)
def test_runner_skip(self) -> None:
code = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
self.warn("Testing")
raise SkipFile()
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(code))
self.assertIsInstance(response, TransformSkip)
self.assertEqual(response.warning_messages, ["Testing"])
def test_runner_failure(self) -> None:
code = """
def foo() -> None:
pass
def bar() -> int:
return 5
"""
class SimpleCodemod(Codemod):
def transform_module_impl(self, tree: cst.Module) -> cst.Module:
self.warn("Testing")
somedict: Dict[str, str] = {}
somedict["invalid_key"]
return tree
transform = SimpleCodemod(CodemodContext())
response = transform_module(transform, dedent(code))
self.assertIsInstance(response, TransformFailure)
assert isinstance(response, TransformFailure)
self.assertEqual(response.warning_messages, ["Testing"])
self.assertIsInstance(response.error, KeyError)
|
