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import WebIDL
def WebIDLTest(parser, harness):
threw = False
try:
parser.parse(
"""
interface VariadicConstraints1 {
undefined foo(byte... arg1, byte arg2);
};
"""
)
parser.finish()
except WebIDL.WebIDLError:
threw = True
harness.ok(
threw,
"Should have thrown on variadic argument followed by required " "argument.",
)
parser = parser.reset()
threw = False
try:
parser.parse(
"""
interface VariadicConstraints2 {
undefined foo(byte... arg1, optional byte arg2);
};
"""
)
parser.finish()
except WebIDL.WebIDLError:
threw = True
harness.ok(
threw,
"Should have thrown on variadic argument followed by optional " "argument.",
)
parser = parser.reset()
threw = False
try:
parser.parse(
"""
interface VariadicConstraints3 {
undefined foo(optional byte... arg1);
};
"""
)
parser.finish()
except WebIDL.WebIDLError:
threw = True
harness.ok(
threw,
"Should have thrown on variadic argument explicitly flagged as " "optional.",
)
parser = parser.reset()
threw = False
try:
parser.parse(
"""
interface VariadicConstraints4 {
undefined foo(byte... arg1 = 0);
};
"""
)
parser.finish()
except WebIDL.WebIDLError:
threw = True
harness.ok(threw, "Should have thrown on variadic argument with default value.")