dom/bindings/parser/tests/test_overload.py

   1 import WebIDL
   2
   3
   4 def WebIDLTest(parser, harness):
   5     parser.parse(
   6         """
   7         interface TestOverloads {
   8           undefined basic();
   9           undefined basic(long arg1);
  10           boolean abitharder(TestOverloads foo);
  11           boolean abitharder(boolean foo);
  12           undefined abitharder(ArrayBuffer? foo);
  13           undefined withVariadics(long... numbers);
  14           undefined withVariadics(TestOverloads iface);
  15           undefined withVariadics(long num, TestOverloads iface);
  16           undefined optionalTest();
  17           undefined optionalTest(optional long num1, long num2);
  18         };
  19     """
  20     )
  21
  22     results = parser.finish()
  23
  24     harness.ok(True, "TestOverloads interface parsed without error.")
  25     harness.check(len(results), 1, "Should be one production.")
  26     iface = results[0]
  27     harness.ok(isinstance(iface, WebIDL.IDLInterface), "Should be an IDLInterface")
  28     harness.check(
  29         iface.identifier.QName(), "::TestOverloads", "Interface has the right QName"
  30     )
  31     harness.check(
  32         iface.identifier.name, "TestOverloads", "Interface has the right name"
  33     )
  34     harness.check(len(iface.members), 4, "Expect %s members" % 4)
  35
  36     member = iface.members[0]
  37     harness.check(
  38         member.identifier.QName(),
  39         "::TestOverloads::basic",
  40         "Method has the right QName",
  41     )
  42     harness.check(member.identifier.name, "basic", "Method has the right name")
  43     harness.check(member.hasOverloads(), True, "Method has overloads")
  44
  45     signatures = member.signatures()
  46     harness.check(len(signatures), 2, "Method should have 2 signatures")
  47
  48     (retval, argumentSet) = signatures[0]
  49
  50     harness.check(str(retval), "Undefined", "Expect an undefined retval")
  51     harness.check(len(argumentSet), 0, "Expect an empty argument set")
  52
  53     (retval, argumentSet) = signatures[1]
  54     harness.check(str(retval), "Undefined", "Expect an undefined retval")
  55     harness.check(len(argumentSet), 1, "Expect an argument set with one argument")
  56
  57     argument = argumentSet[0]
  58     harness.ok(isinstance(argument, WebIDL.IDLArgument), "Should be an IDLArgument")
  59     harness.check(
  60         argument.identifier.QName(),
  61         "::TestOverloads::basic::arg1",
  62         "Argument has the right QName",
  63     )
  64     harness.check(argument.identifier.name, "arg1", "Argument has the right name")
  65     harness.check(str(argument.type), "Long", "Argument has the right type")
  66
  67     member = iface.members[3]
  68     harness.check(
  69         len(member.overloadsForArgCount(0)), 1, "Only one overload for no args"
  70     )
  71     harness.check(len(member.overloadsForArgCount(1)), 0, "No overloads for one arg")
  72     harness.check(
  73         len(member.overloadsForArgCount(2)), 1, "Only one overload for two args"
  74     )