dom/bindings/parser/tests/test_overload.py
author Boris Zbarsky <bzbarsky@mit.edu>
Fri, 11 Oct 2013 12:28:23 -0400
changeset 150526 877a227c502f07a77a1600edf3285665218ae0fb
parent 115730 7a5e83065d9f20209a702ab857662818ae50d049
child 150638 fcddc11fb2ef7747a638f7f5efc1fb1c62614996
permissions -rw-r--r--
Bug 882541 part 1. Don't require all arguments after an optional argument to be optional. r=khuey

import WebIDL

def WebIDLTest(parser, harness):
    parser.parse("""
        interface TestOverloads {
          void basic();
          void basic(long arg1);
          boolean abitharder(TestOverloads foo);
          boolean abitharder(boolean foo);
          void abitharder(ArrayBuffer? foo);
          void withVariadics(long... numbers);
          void withVariadics(TestOverloads iface);
          void withVariadics(long num, TestOverloads iface);
          void optionalTest();
          void optionalTest(optional long num1, long num2);
        };
    """)

    results = parser.finish()

    harness.ok(True, "TestOverloads interface parsed without error.")
    harness.check(len(results), 1, "Should be one production.")
    iface = results[0]
    harness.ok(isinstance(iface, WebIDL.IDLInterface),
               "Should be an IDLInterface")
    harness.check(iface.identifier.QName(), "::TestOverloads", "Interface has the right QName")
    harness.check(iface.identifier.name, "TestOverloads", "Interface has the right name")
    harness.check(len(iface.members), 4, "Expect %s members" % 4)

    member = iface.members[0]
    harness.check(member.identifier.QName(), "::TestOverloads::basic", "Method has the right QName")
    harness.check(member.identifier.name, "basic", "Method has the right name")
    harness.check(member.hasOverloads(), True, "Method has overloads")

    signatures = member.signatures()
    harness.check(len(signatures), 2, "Method should have 2 signatures")

    (retval, argumentSet) = signatures[0]

    harness.check(str(retval), "Void", "Expect a void retval")
    harness.check(len(argumentSet), 0, "Expect an empty argument set")

    (retval, argumentSet) = signatures[1]
    harness.check(str(retval), "Void", "Expect a void retval")
    harness.check(len(argumentSet), 1, "Expect an argument set with one argument")

    argument = argumentSet[0]
    harness.ok(isinstance(argument, WebIDL.IDLArgument),
               "Should be an IDLArgument")
    harness.check(argument.identifier.QName(), "::TestOverloads::basic::arg1", "Argument has the right QName")
    harness.check(argument.identifier.name, "arg1", "Argument has the right name")
    harness.check(str(argument.type), "Long", "Argument has the right type")

    member = iface.members[3]
    harness.check(len(member.overloadsForArgCount(0)), 1,
                  "Only one overload for no args")
    harness.check(len(member.overloadsForArgCount(1)), 0,
                  "No overloads for one arg")
    harness.check(len(member.overloadsForArgCount(2)), 1,
                  "Only one overload for two args")