dom/bindings/parser/tests/test_empty_sequence_default_value.py

   1 import WebIDL
   2
   3
   4 def WebIDLTest(parser, harness):
   5     threw = False
   6     try:
   7         parser.parse(
   8             """
   9             interface X {
  10               const sequence<long> foo = [];
  11             };
  12         """
  13         )
  14
  15         results = parser.finish()
  16     except WebIDL.WebIDLError:
  17         threw = True
  18
  19     harness.ok(threw, "Constant cannot have [] as a default value")
  20
  21     parser = parser.reset()
  22
  23     parser.parse(
  24         """
  25         interface X {
  26           undefined foo(optional sequence<long> arg = []);
  27         };
  28     """
  29     )
  30     results = parser.finish()
  31
  32     harness.ok(
  33         isinstance(
  34             results[0].members[0].signatures()[0][1][0].defaultValue,
  35             WebIDL.IDLEmptySequenceValue,
  36         ),
  37         "Should have IDLEmptySequenceValue as default value of argument",
  38     )
  39
  40     parser = parser.reset()
  41
  42     parser.parse(
  43         """
  44         dictionary X {
  45           sequence<long> foo = [];
  46         };
  47     """
  48     )
  49     results = parser.finish()
  50
  51     harness.ok(
  52         isinstance(results[0].members[0].defaultValue, WebIDL.IDLEmptySequenceValue),
  53         "Should have IDLEmptySequenceValue as default value of " "dictionary member",
  54     )