def test_same_local_and_imported_rule_names(self):
""" Local rules with the same name have precedence over imported rules. """
grammar = Grammar("test")
local_z = Rule("Z", True, "z")
grammar.add_rule(local_z)
grammar.add_import(Import("grammars.test1.Z"))
self.assertEqual(grammar.get_rule("Z"), local_z)
def test_ambiguous_qualified_names(self):
""" Imported rules with the same qualified name must be fully referenced. """
grammar = Grammar("test")
grammar.add_import(Import("grammars.test6.rule"))
grammar.add_import(Import("grammars2.test6.rule"))
self.assertRaises(GrammarError, grammar.get_rule, "rule")
self.assertRaises(GrammarError, grammar.get_rule, "test6.rule")
expected1 = parse_grammar_string("""
#JSGF V1.0;
grammar grammars.test6;
public <rule> = test grammars one;
""")
expected2 = parse_grammar_string("""
#JSGF V1.0;
grammar grammars2.test6;
public <rule> = test grammars two;
""")
self.assertEqual(grammar.get_rule("grammars.test6.rule"),
expected1.get_rule("rule"))
self.assertEqual(grammar.get_rule("grammars2.test6.rule"),
expected2.get_rule("rule"))
def test_fully_qualified_rule_reference(self):
""" Fully-qualified rule references do not require import statements. """
grammar = Grammar("test")
fully_qualified_ref = "grammars.test1.W"
named_ref = NamedRuleRef(fully_qualified_ref)
rule = Rule("rule", True, named_ref)
grammar.add_rule(rule)
expected_rule = self.grammars.test1.get_rule("W")
for x in range(2):
self.assertEqual(named_ref.referenced_rule, expected_rule)
self.assertEqual(grammar.get_rule(fully_qualified_ref),
expected_rule)
self.assertEqual(grammar.find_matching_rules("w"), [rule])
# Check that the import statement is allowed.
grammar.add_import(Import(fully_qualified_ref))