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import WebIDL
def WebIDLTest(parser, harness):
parser.parse("interface Foo { };")
results = parser.finish()
harness.ok(True, "Empty interface parsed without error.")
harness.check(len(results), 1, "Should be one production")
harness.ok(isinstance(results[0], WebIDL.IDLInterface),
"Should be an IDLInterface")
iface = results[0]
harness.check(iface.identifier.QName(), "::Foo", "Interface has the right QName")
harness.check(iface.identifier.name, "Foo", "Interface has the right name")
harness.check(iface.parent, None, "Interface has no parent")
parser.parse("interface Bar : Foo { };")
results = parser.finish()
harness.ok(True, "Empty interface parsed without error.")
harness.check(len(results), 2, "Should be two productions")
harness.ok(isinstance(results[1], WebIDL.IDLInterface),
"Should be an IDLInterface")
iface = results[1]
harness.check(iface.identifier.QName(), "::Bar", "Interface has the right QName")
harness.check(iface.identifier.name, "Bar", "Interface has the right name")
harness.ok(isinstance(iface.parent, WebIDL.IDLInterface),
"Interface has a parent")
parser = parser.reset()
parser.parse("""
interface QNameBase {
attribute long foo;
};
interface QNameDerived : QNameBase {
attribute long long foo;
attribute byte bar;
};
""")
results = parser.finish()
harness.check(len(results), 2, "Should be two productions")
harness.ok(isinstance(results[0], WebIDL.IDLInterface),
"Should be an IDLInterface")
harness.ok(isinstance(results[1], WebIDL.IDLInterface),
"Should be an IDLInterface")
harness.check(results[1].parent, results[0], "Inheritance chain is right")
harness.check(len(results[0].members), 1, "Expect 1 productions")
harness.check(len(results[1].members), 2, "Expect 2 productions")
base = results[0]
derived = results[1]
harness.check(base.members[0].identifier.QName(), "::QNameBase::foo",
"Member has the right QName")
harness.check(derived.members[0].identifier.QName(), "::QNameDerived::foo",
"Member has the right QName")
harness.check(derived.members[1].identifier.QName(), "::QNameDerived::bar",
"Member has the right QName")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A : B {};
interface B : A {};
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow cycles in interface inheritance chains")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A : C {};
interface C : B {};
interface B : A {};
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow indirect cycles in interface inheritance chains")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A {};
interface B {};
A implements B;
B implements A;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow cycles via implements")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A {};
interface C {};
interface B {};
A implements C;
C implements B;
B implements A;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow indirect cycles via implements")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A : B {};
interface B {};
B implements A;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow inheriting from an interface that implements us")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A : B {};
interface B {};
interface C {};
B implements C;
C implements A;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow inheriting from an interface that indirectly implements us")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A : B {};
interface B : C {};
interface C {};
C implements A;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow indirectly inheriting from an interface that implements us")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A : B {};
interface B : C {};
interface C {};
interface D {};
C implements D;
D implements A;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow indirectly inheriting from an interface that indirectly implements us")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface A;
interface B : A {};
""")
results = parser.finish()
except:
threw = True
harness.ok(threw, "Should not allow inheriting from an interface that is only forward declared")
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