michael@0: #!/usr/bin/env python
michael@0: 
michael@0: import unittest
michael@0: from manifestparser import parse
michael@0: 
michael@0: class ExpressionParserTest(unittest.TestCase):
michael@0:     """Test the conditional expression parser."""
michael@0: 
michael@0:     def test_basic(self):
michael@0: 
michael@0:         self.assertEqual(parse("1"), 1)
michael@0:         self.assertEqual(parse("100"), 100)
michael@0:         self.assertEqual(parse("true"), True)
michael@0:         self.assertEqual(parse("false"), False)
michael@0:         self.assertEqual('', parse('""'))
michael@0:         self.assertEqual(parse('"foo bar"'), 'foo bar')
michael@0:         self.assertEqual(parse("'foo bar'"), 'foo bar')
michael@0:         self.assertEqual(parse("foo", foo=1), 1)
michael@0:         self.assertEqual(parse("bar", bar=True), True)
michael@0:         self.assertEqual(parse("abc123", abc123="xyz"), 'xyz')
michael@0: 
michael@0:     def test_equality(self):
michael@0: 
michael@0:         self.assertTrue(parse("true == true"))
michael@0:         self.assertTrue(parse("false == false"))
michael@0:         self.assertTrue(parse("1 == 1"))
michael@0:         self.assertTrue(parse("100 == 100"))
michael@0:         self.assertTrue(parse('"some text" == "some text"'))
michael@0:         self.assertTrue(parse("true != false"))
michael@0:         self.assertTrue(parse("1 != 2"))
michael@0:         self.assertTrue(parse('"text" != "other text"'))
michael@0:         self.assertTrue(parse("foo == true", foo=True))
michael@0:         self.assertTrue(parse("foo == 1", foo=1))
michael@0:         self.assertTrue(parse('foo == "bar"', foo='bar'))
michael@0:         self.assertTrue(parse("foo == bar", foo=True, bar=True))
michael@0:         self.assertTrue(parse("true == foo", foo=True))
michael@0:         self.assertTrue(parse("foo != true", foo=False))
michael@0:         self.assertTrue(parse("foo != 2", foo=1))
michael@0:         self.assertTrue(parse('foo != "bar"', foo='abc'))
michael@0:         self.assertTrue(parse("foo != bar", foo=True, bar=False))
michael@0:         self.assertTrue(parse("true != foo", foo=False))
michael@0:         self.assertTrue(parse("!false"))
michael@0: 
michael@0:     def test_conjunctures(self):
michael@0:         self.assertTrue(parse("true && true"))
michael@0:         self.assertTrue(parse("true || false"))
michael@0:         self.assertFalse(parse("false || false"))
michael@0:         self.assertFalse(parse("true && false"))
michael@0:         self.assertTrue(parse("true || false && false"))
michael@0: 
michael@0:     def test_parentheses(self):
michael@0:         self.assertTrue(parse("(true)"))
michael@0:         self.assertEqual(parse("(10)"), 10)
michael@0:         self.assertEqual(parse('("foo")'), 'foo')
michael@0:         self.assertEqual(parse("(foo)", foo=1), 1)
michael@0:         self.assertTrue(parse("(true == true)"), True)
michael@0:         self.assertTrue(parse("(true != false)"))
michael@0:         self.assertTrue(parse("(true && true)"))
michael@0:         self.assertTrue(parse("(true || false)"))
michael@0:         self.assertTrue(parse("(true && true || false)"))
michael@0:         self.assertFalse(parse("(true || false) && false"))
michael@0:         self.assertTrue(parse("(true || false) && true"))
michael@0:         self.assertTrue(parse("true && (true || false)"))
michael@0:         self.assertTrue(parse("true && (true || false)"))
michael@0:         self.assertTrue(parse("(true && false) || (true && (true || false))"))
michael@0: 
michael@0: 
michael@0:     def test_comments(self):
michael@0:         # comments in expressions work accidentally, via an implementation
michael@0:         # detail - the '#' character doesn't match any of the regular
michael@0:         # expressions we specify as tokens, and thus are ignored.
michael@0:         # However, having explicit tests for them means that should the
michael@0:         # implementation ever change, comments continue to work, even if that
michael@0:         # means a new implementation must handle them explicitly.
michael@0:         self.assertTrue(parse("true == true # it does!"))
michael@0:         self.assertTrue(parse("false == false # it does"))
michael@0:         self.assertTrue(parse("false != true # it doesnt"))
michael@0:         self.assertTrue(parse('"string with #" == "string with #" # really, it does'))
michael@0:         self.assertTrue(parse('"string with #" != "string with # but not the same" # no match!'))
michael@0: 
michael@0:     def test_not(self):
michael@0:         """
michael@0:         Test the ! operator.
michael@0:         """
michael@0:         self.assertTrue(parse("!false"))
michael@0:         self.assertTrue(parse("!(false)"))
michael@0:         self.assertFalse(parse("!true"))
michael@0:         self.assertFalse(parse("!(true)"))
michael@0:         self.assertTrue(parse("!true || true)"))
michael@0:         self.assertTrue(parse("true || !true)"))
michael@0:         self.assertFalse(parse("!true && true"))
michael@0:         self.assertFalse(parse("true && !true"))
michael@0: 
michael@0: if __name__ == '__main__':
michael@0:     unittest.main()