98 lines
2.9 KiB
Python
98 lines
2.9 KiB
Python
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# coding=utf-8
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"""Tests for augment.inline."""
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# Copyright 2017 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import ast
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import textwrap
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import unittest
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from pasta.augment import inline
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from pasta.base import test_utils
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class InlineTest(test_utils.TestCase):
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def test_inline_simple(self):
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src = 'x = 1\na = x\n'
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t = ast.parse(src)
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inline.inline_name(t, 'x')
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self.checkAstsEqual(t, ast.parse('a = 1\n'))
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def test_inline_multiple_targets(self):
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src = 'x = y = z = 1\na = x + y\n'
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t = ast.parse(src)
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inline.inline_name(t, 'y')
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self.checkAstsEqual(t, ast.parse('x = z = 1\na = x + 1\n'))
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def test_inline_multiple_reads(self):
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src = textwrap.dedent('''\
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CONSTANT = "foo"
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def a(b=CONSTANT):
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return b == CONSTANT
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''')
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expected = textwrap.dedent('''\
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def a(b="foo"):
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return b == "foo"
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''')
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t = ast.parse(src)
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inline.inline_name(t, 'CONSTANT')
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self.checkAstsEqual(t, ast.parse(expected))
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def test_inline_non_constant_fails(self):
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src = textwrap.dedent('''\
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NOT_A_CONSTANT = "foo"
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NOT_A_CONSTANT += "bar"
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''')
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t = ast.parse(src)
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with self.assertRaisesRegexp(inline.InlineError,
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'\'NOT_A_CONSTANT\' is not a constant'):
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inline.inline_name(t, 'NOT_A_CONSTANT')
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def test_inline_function_fails(self):
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src = 'def func(): pass\nfunc()\n'
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t = ast.parse(src)
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with self.assertRaisesRegexp(
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inline.InlineError,
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'\'func\' is not a constant; it has type %r' % ast.FunctionDef):
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inline.inline_name(t, 'func')
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def test_inline_conditional_fails(self):
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src = 'if define:\n x = 1\na = x\n'
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t = ast.parse(src)
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with self.assertRaisesRegexp(inline.InlineError,
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'\'x\' is not a top-level name'):
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inline.inline_name(t, 'x')
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def test_inline_non_assign_fails(self):
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src = 'CONSTANT1, CONSTANT2 = values'
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t = ast.parse(src)
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with self.assertRaisesRegexp(
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inline.InlineError, '\'CONSTANT1\' is not declared in an assignment'):
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inline.inline_name(t, 'CONSTANT1')
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def suite():
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result = unittest.TestSuite()
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result.addTests(unittest.makeSuite(InlineTest))
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return result
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if __name__ == '__main__':
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unittest.main()
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