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# Import the WebIDL module, so we can do isinstance checks and whatnot
import WebIDL
def WebIDLTest(parser, harness):
# Basic functionality
threw = False
try:
parser.parse("""
A implements B;
interface B {
attribute long x;
};
interface A {
attribute long y;
};
""")
results = parser.finish()
except:
threw = True
harness.ok(not threw, "Should not have thrown on implements statement "
"before interfaces")
harness.check(len(results), 3, "We have three statements")
harness.ok(isinstance(results[1], WebIDL.IDLInterface), "B is an interface")
harness.check(len(results[1].members), 1, "B has one member")
A = results[2]
harness.ok(isinstance(A, WebIDL.IDLInterface), "A is an interface")
harness.check(len(A.members), 2, "A has two members")
harness.check(A.members[0].identifier.name, "y", "First member is 'y'")
harness.check(A.members[1].identifier.name, "x", "Second member is 'x'")
# Duplicated member names not allowed
threw = False
try:
parser.parse("""
C implements D;
interface D {
attribute long x;
};
interface C {
attribute long x;
};
""")
parser.finish()
except:
threw = True
harness.ok(threw, "Should have thrown on implemented interface duplicating "
"a name on base interface")
# Same, but duplicated across implemented interfaces
threw = False
try:
parser.parse("""
E implements F;
E implements G;
interface F {
attribute long x;
};
interface G {
attribute long x;
};
interface E {};
""")
parser.finish()
except:
threw = True
harness.ok(threw, "Should have thrown on implemented interfaces "
"duplicating each other's member names")
# Same, but duplicated across indirectly implemented interfaces
threw = False
try:
parser.parse("""
H implements I;
H implements J;
I implements K;
interface K {
attribute long x;
};
interface L {
attribute long x;
};
interface I {};
interface J : L {};
interface H {};
""")
parser.finish()
except:
threw = True
harness.ok(threw, "Should have thrown on indirectly implemented interfaces "
"duplicating each other's member names")
# Same, but duplicated across an implemented interface and its parent
threw = False
try:
parser.parse("""
M implements N;
interface O {
attribute long x;
};
interface N : O {
attribute long x;
};
interface M {};
""")
parser.finish()
except:
threw = True
harness.ok(threw, "Should have thrown on implemented interface and its "
"ancestor duplicating member names")
# Reset the parser so we can actually find things where we expect
# them in the list
parser = parser.reset()
# Diamonds should be allowed
threw = False
try:
parser.parse("""
P implements Q;
P implements R;
Q implements S;
R implements S;
interface Q {};
interface R {};
interface S {
attribute long x;
};
interface P {};
""")
results = parser.finish()
except:
threw = True
harness.ok(not threw, "Diamond inheritance is fine")
harness.check(results[6].identifier.name, "S", "We should be looking at 'S'")
harness.check(len(results[6].members), 1, "S should have one member")
harness.check(results[6].members[0].identifier.name, "x",
"S's member should be 'x'")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface TestInterface {
};
callback interface TestCallbackInterface {
};
TestInterface implements TestCallbackInterface;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw,
"Should not allow callback interfaces on the right-hand side "
"of 'implements'")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface TestInterface {
};
callback interface TestCallbackInterface {
};
TestCallbackInterface implements TestInterface;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw,
"Should not allow callback interfaces on the left-hand side of "
"'implements'")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface TestInterface {
};
dictionary Dict {
};
Dict implements TestInterface;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw,
"Should not allow non-interfaces on the left-hand side "
"of 'implements'")
parser = parser.reset()
threw = False
try:
parser.parse("""
interface TestInterface {
};
dictionary Dict {
};
TestInterface implements Dict;
""")
results = parser.finish()
except:
threw = True
harness.ok(threw,
"Should not allow non-interfaces on the right-hand side "
"of 'implements'")
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