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1# Copyright 2015 Google Inc. All Rights Reserved.
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14"""Tests for yapf.logical_line."""
15
16import textwrap
17import unittest
18
19from yapf_third_party._ylib2to3 import pytree
20from yapf_third_party._ylib2to3.pgen2 import token
21
22from yapf.pytree import split_penalty
23from yapf.yapflib import format_token
24from yapf.yapflib import logical_line
25
26from yapftests import yapf_test_helper
27
28
29class LogicalLineBasicTest(yapf_test_helper.YAPFTest):
30
31  def testConstruction(self):
32    toks = _MakeFormatTokenList([(token.DOT, '.', 'DOT'),
33                                 (token.VBAR, '|', 'VBAR')])
34    lline = logical_line.LogicalLine(20, toks)
35    self.assertEqual(20, lline.depth)
36    self.assertEqual(['DOT', 'VBAR'], [tok.name for tok in lline.tokens])
37
38  def testFirstLast(self):
39    toks = _MakeFormatTokenList([(token.DOT, '.', 'DOT'),
40                                 (token.LPAR, '(', 'LPAR'),
41                                 (token.VBAR, '|', 'VBAR')])
42    lline = logical_line.LogicalLine(20, toks)
43    self.assertEqual(20, lline.depth)
44    self.assertEqual('DOT', lline.first.name)
45    self.assertEqual('VBAR', lline.last.name)
46
47  def testAsCode(self):
48    toks = _MakeFormatTokenList([(token.DOT, '.', 'DOT'),
49                                 (token.LPAR, '(', 'LPAR'),
50                                 (token.VBAR, '|', 'VBAR')])
51    lline = logical_line.LogicalLine(2, toks)
52    self.assertEqual('    . ( |', lline.AsCode())
53
54  def testAppendToken(self):
55    lline = logical_line.LogicalLine(0)
56    lline.AppendToken(_MakeFormatTokenLeaf(token.LPAR, '(', 'LPAR'))
57    lline.AppendToken(_MakeFormatTokenLeaf(token.RPAR, ')', 'RPAR'))
58    self.assertEqual(['LPAR', 'RPAR'], [tok.name for tok in lline.tokens])
59
60
61class LogicalLineFormattingInformationTest(yapf_test_helper.YAPFTest):
62
63  def testFuncDef(self):
64    code = textwrap.dedent("""\
65        def f(a, b):
66          pass
67    """)
68    llines = yapf_test_helper.ParseAndUnwrap(code)
69
70    f = llines[0].tokens[1]
71    self.assertFalse(f.can_break_before)
72    self.assertFalse(f.must_break_before)
73    self.assertEqual(f.split_penalty, split_penalty.UNBREAKABLE)
74
75    lparen = llines[0].tokens[2]
76    self.assertFalse(lparen.can_break_before)
77    self.assertFalse(lparen.must_break_before)
78    self.assertEqual(lparen.split_penalty, split_penalty.UNBREAKABLE)
79
80
81def _MakeFormatTokenLeaf(token_type, token_value, name):
82  return format_token.FormatToken(pytree.Leaf(token_type, token_value), name)
83
84
85def _MakeFormatTokenList(token_type_values):
86  return [
87      _MakeFormatTokenLeaf(token_type, token_value, token_name)
88      for token_type, token_value, token_name in token_type_values
89  ]
90
91
92if __name__ == '__main__':
93  unittest.main()
94