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e3b9199833
Summary: As part of folding getdeps into fbcode_builder, this expression parser is needed to allow constrained and deterministic conditionals in the manifest file format. For example, the watchman manifest will use this cargo-inspired syntax for system dependent sections: ``` [dependencies] folly [dependencies.not(os=windows)] thrift ``` Reviewed By: sinancepel Differential Revision: D14691014 fbshipit-source-id: 080bcdb20579da40d225799f5f22debe65708b03
43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
#!/usr/bin/env python
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# Copyright (c) 2019-present, Facebook, Inc.
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# All rights reserved.
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#
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# This source code is licensed under the BSD-style license found in the
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# LICENSE file in the root directory of this source tree. An additional grant
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# of patent rights can be found in the PATENTS file in the same directory.
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from __future__ import absolute_import, division, print_function, unicode_literals
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import unittest
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from ..expr import parse_expr
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class ExprTest(unittest.TestCase):
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def test_equal(self):
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e = parse_expr("foo=bar")
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self.assertTrue(e.eval({"foo": "bar"}))
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self.assertFalse(e.eval({"foo": "not-bar"}))
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self.assertFalse(e.eval({"not-foo": "bar"}))
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def test_not_equal(self):
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e = parse_expr("not(foo=bar)")
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self.assertFalse(e.eval({"foo": "bar"}))
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self.assertTrue(e.eval({"foo": "not-bar"}))
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def test_bad_not(self):
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with self.assertRaises(Exception):
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parse_expr("foo=not(bar)")
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def test_all(self):
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e = parse_expr("all(foo = bar, baz = qux)")
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self.assertTrue(e.eval({"foo": "bar", "baz": "qux"}))
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self.assertFalse(e.eval({"foo": "bar", "baz": "nope"}))
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self.assertFalse(e.eval({"foo": "nope", "baz": "nope"}))
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def test_any(self):
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e = parse_expr("any(foo = bar, baz = qux)")
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self.assertTrue(e.eval({"foo": "bar", "baz": "qux"}))
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self.assertTrue(e.eval({"foo": "bar", "baz": "nope"}))
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self.assertFalse(e.eval({"foo": "nope", "baz": "nope"}))
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