| 1 | #!/usr/bin/env python2
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| 2 | """
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| 3 | split.test.py: Tests for split.py
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| 4 | """
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| 5 |
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| 6 | import unittest
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| 7 |
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| 8 | from core import state
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| 9 | from core import test_lib
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| 10 | from osh import split # module under test
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| 11 |
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| 12 |
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| 13 | def _RunSplitCases(test, sp, cases):
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| 14 | for expected_parts, s, allow_escape in cases:
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| 15 | spans = sp.Split(s, allow_escape)
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| 16 | if 0:
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| 17 | print('%r: %s' % (s, spans))
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| 18 | else:
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| 19 | # Verbose for debugging
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| 20 | print(repr(s))
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| 21 | for span in spans:
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| 22 | print(' %s %s' % span)
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| 23 |
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| 24 | parts = split._SpansToParts(s, spans)
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| 25 | print('PARTS %s' % parts)
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| 26 |
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| 27 | test.assertEqual(expected_parts, parts,
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| 28 | '%r: %s != %s' % (s, expected_parts, parts))
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| 29 |
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| 30 |
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| 31 | class SplitTest(unittest.TestCase):
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| 32 |
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| 33 | def testSpansToParts(self):
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| 34 | sp = split.IfsSplitter(split.DEFAULT_IFS, '')
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| 35 |
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| 36 | s = 'one\\ two'
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| 37 | spans = sp.Split(s, False)
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| 38 | print(spans)
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| 39 |
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| 40 | parts = split._SpansToParts(s, spans)
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| 41 | self.assertEqual(['one\\', 'two'], parts)
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| 42 |
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| 43 | spans = sp.Split(s, True) # allow_escape
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| 44 | parts = split._SpansToParts(s, spans)
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| 45 | self.assertEqual(['one two'], parts)
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| 46 |
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| 47 | # NOTE: Only read builtin supports max_results
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| 48 | return
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| 49 |
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| 50 | parts = split._SpansToParts(s, spans, max_results=1)
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| 51 | self.assertEqual(['one\\ two'], parts)
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| 52 |
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| 53 | print(spans)
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| 54 |
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| 55 | parts = split._SpansToParts(s, spans, max_results=1)
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| 56 | self.assertEqual(['one two'], parts)
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| 57 |
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| 58 | def testTrailingWhitespaceBug(self):
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| 59 | # Bug: these differed
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| 60 | CASES = [
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| 61 | (['x y'], r' x\ y', True),
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| 62 | (['ab '], r' ab\ ', True),
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| 63 | (['ab '], r' ab\ ', True),
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| 64 | ]
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| 65 | sp = split.IfsSplitter(split.DEFAULT_IFS, '')
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| 66 | _RunSplitCases(self, sp, CASES)
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| 67 |
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| 68 | def testDefaultIfs(self):
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| 69 | CASES = [
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| 70 | ([], '', True),
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| 71 | (['a'], 'a', True),
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| 72 | (['a'], ' a ', True),
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| 73 | (['ab'], '\tab\n', True),
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| 74 | (['a', 'b'], 'a b\n', True),
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| 75 | (['a b'], r'a\ b', True),
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| 76 | (['a\\', 'b'], r'a\ b', False),
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| 77 | ([r'\*.sh'], r'\\*.sh', True),
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| 78 | (['Aa', 'b', ' a b'], 'Aa b \\ a\\ b', True),
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| 79 | ]
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| 80 |
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| 81 | sp = split.IfsSplitter(split.DEFAULT_IFS, '')
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| 82 | _RunSplitCases(self, sp, CASES)
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| 83 |
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| 84 | self.assertEqual(r'a\ _b', sp.Escape('a _b'))
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| 85 |
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| 86 | def testMixedIfs(self):
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| 87 | CASES = [
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| 88 | ([], '', True),
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| 89 | (['a', 'b'], 'a_b', True),
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| 90 | (['a', 'b'], ' a b ', True),
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| 91 | (['a', 'b'], 'a _ b', True),
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| 92 | (['a', 'b'], ' a _ b ', True),
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| 93 | (['a', '', 'b'], 'a _ _ b', True),
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| 94 | (['a', '', 'b'], 'a __ b', True),
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| 95 | (['a', '', '', 'b'], 'a _ _ _ b', True),
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| 96 | (['a'], ' a _ ', True),
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| 97 |
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| 98 | # NOTES:
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| 99 | # - This cases REQUIRES ignoring leading whitespace. The state machine
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| 100 | # can't handle it. Contrast with the case above.
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| 101 | # - We get three spans with index 1 because of the initial rule to
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| 102 | # ignore whitespace, and then EMIT_EMPTY. Seems harmless for now?
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| 103 | (['', 'a'], ' _ a _ ', True),
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| 104 |
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| 105 | # Backslash escape
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| 106 | (['a b'], r'a\ b', True),
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| 107 | (['a\\', 'b'], r'a\ b', False),
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| 108 | ]
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| 109 |
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| 110 | # IFS='_ '
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| 111 | sp = split.IfsSplitter(' ', '_')
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| 112 | _RunSplitCases(self, sp, CASES)
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| 113 |
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| 114 | self.assertEqual('a\ \_b', sp.Escape('a _b'))
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| 115 |
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| 116 | def testWhitespaceOnly(self):
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| 117 | CASES = [
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| 118 | ([], '', True),
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| 119 | ([], '\t', True),
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| 120 | (['a'], 'a\t', True),
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| 121 | (['a', 'b'], '\t\ta\tb\t', True),
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| 122 |
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| 123 | # Backslash escape
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| 124 | (['a\tb'], 'a\\\tb', True),
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| 125 | (['a\\', 'b'], 'a\\\tb', False),
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| 126 | ]
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| 127 |
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| 128 | # IFS='_ '
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| 129 | sp = split.IfsSplitter('\t', '')
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| 130 | _RunSplitCases(self, sp, CASES)
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| 131 |
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| 132 | self.assertEqual('a b', sp.Escape('a b'))
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| 133 | self.assertEqual('a\\\tb', sp.Escape('a\tb'))
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| 134 |
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| 135 | def testOtherOnly(self):
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| 136 | CASES = [
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| 137 | ([], '', True),
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| 138 | ([''], '_', True),
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| 139 | (['a'], 'a_', True),
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| 140 | (['', '', 'a', 'b'], '__a_b_', True),
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| 141 |
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| 142 | # Backslash escape
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| 143 | (['a_b'], r'a\_b', True),
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| 144 | (['a\\', 'b'], r'a\_b', False),
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| 145 | ]
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| 146 |
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| 147 | # IFS='_ '
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| 148 | sp = split.IfsSplitter('', '_')
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| 149 | _RunSplitCases(self, sp, CASES)
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| 150 |
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| 151 | def testTwoOther(self):
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| 152 | CASES = [
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| 153 | (['a', '', 'b', '', '', 'c', 'd'], 'a__b---c_d', True),
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| 154 |
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| 155 | # Backslash escape
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| 156 | (['a_-b'], r'a\_\-b', True),
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| 157 | (['a\\', '\\', 'b'], r'a\_\-b', False),
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| 158 | ]
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| 159 |
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| 160 | # IFS='_ '
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| 161 | sp = split.IfsSplitter('', '_-')
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| 162 | _RunSplitCases(self, sp, CASES)
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| 163 |
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| 164 |
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| 165 | class SplitContextTest(unittest.TestCase):
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| 166 |
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| 167 | def testSplitForWordEval(self):
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| 168 | arena = test_lib.MakeArena('<SplitContextTest>')
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| 169 | mem = state.Mem('', [], arena, [], {})
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| 170 | # This is the default
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| 171 | #state.SetGlobalString(mem, 'IFS', split.DEFAULT_IFS)
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| 172 |
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| 173 | splitter = split.SplitContext(mem)
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| 174 |
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| 175 | # Can pass allow_escape=False
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| 176 | for s in ['', ' foo bar ', '\\']:
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| 177 | result = splitter.SplitForWordEval(s)
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| 178 | print(result)
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| 179 |
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| 180 |
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| 181 | if __name__ == '__main__':
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| 182 | unittest.main()
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