def testParser3(self):
"""Test quote escaping in strings."""
# The following has an escaped quote.
ast = lexer.SearchParser(
r"""subject matches '"hello" \'world\''""").Parse()
self.assertEqual(ast.operator, "matches")
self.assertEqual(ast.args[0], """\"hello" 'world'""")
def testFailedParser(self):
"""Test that the parser raises for invalid input."""
# Some illegal expressions
for expression in (
"""filename contains "foo""", # Unterminated string
"""(filename contains "foo" """, # Unbalanced parenthesis
"""filename contains foo or """): # empty right expression
parser = lexer.SearchParser(expression)
self.assertRaises(lexer.ParseError, parser.Parse)
def testParser(self):
"""Test parenthesis precedence."""
# First build an AST from the expression. (Deliberately include \r\n here):
ast = lexer.SearchParser(
""" ('file name' contains "foo") and (size > 100k
or date before "2011-10")""").Parse()
self.assertEqual(ast.operator, "and")
self.assertEqual(ast.args[0].attribute, "file name")
self.assertEqual(ast.args[0].operator, "contains")
self.assertEqual(ast.args[0].args[0], "foo")
self.assertEqual(ast.args[1].operator, "or")
self.assertEqual(ast.args[1].args[0].attribute, "size")
self.assertEqual(ast.args[1].args[0].operator, ">")
self.assertEqual(ast.args[1].args[0].args[0], "100k")
self.assertEqual(ast.args[1].args[1].attribute, "date")
self.assertEqual(ast.args[1].args[1].operator, "before")
self.assertEqual(ast.args[1].args[1].args[0], "2011-10")