michael@0: def WebIDLTest(parser, harness):
michael@0:     threw = False
michael@0:     try:
michael@0:         parser.parse("""
michael@0:             interface VoidArgument1 {
michael@0:               void foo(void arg2);
michael@0:             };
michael@0:         """)
michael@0: 
michael@0:         results = parser.finish()
michael@0:     except:
michael@0:         threw = True
michael@0: 
michael@0:     harness.ok(threw, "Should have thrown.")