components/script/dom/bindings/codegen/parser/update.sh now downloads all

the latest *.py tests from
https://hg.mozilla.org/mozilla-central/archive/tip.tar.gz/dom/bindings/parser/tests/

components/script/dom/bindings/codegen/parser/tests/test_replaceable.py

@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+def should_throw(parser, harness, message, code):
+    parser = parser.reset();
+    threw = False
+    try:
+        parser.parse(code)
+        parser.finish()
+    except:
+        threw = True
+
+    harness.ok(threw, "Should have thrown: %s" % message)
+
+
+def WebIDLTest(parser, harness):
+    # The [Replaceable] extended attribute MUST take no arguments.
+    should_throw(parser, harness, "no arguments", """
+        interface I {
+          [Replaceable=X] readonly attribute long A;
+        };
+    """)
+
+    # An attribute with the [Replaceable] extended attribute MUST NOT also be
+    # declared with the [PutForwards] extended attribute.
+    should_throw(parser, harness, "PutForwards", """
+        interface I {
+          [PutForwards=B, Replaceable] readonly attribute J A;
+        };
+        interface J {
+          attribute long B;
+        };
+    """)
+
+    # The [Replaceable] extended attribute MUST NOT be used on an attribute
+    # that is not read only.
+    should_throw(parser, harness, "writable attribute", """
+        interface I {
+          [Replaceable] attribute long A;
+        };
+    """)
+
+    # The [Replaceable] extended attribute MUST NOT be used on a static
+    # attribute.
+    should_throw(parser, harness, "static attribute", """
+        interface I {
+          [Replaceable] static readonly attribute long A;
+        };
+    """)
+
+    # The [Replaceable] extended attribute MUST NOT be used on an attribute
+    # declared on a callback interface.
+    should_throw(parser, harness, "callback interface", """
+        callback interface I {
+          [Replaceable] readonly attribute long A;
+        };
+    """)