1 files changed, 459 insertions, 0 deletions
diff --git a/dom/bindings/parser/tests/test_interface.py b/dom/bindings/parser/tests/test_interface.py
new file mode 100644
index 0000000000..c078a593bb
--- /dev/null
+++ b/dom/bindings/parser/tests/test_interface.py
@@ -0,0 +1,459 @@
+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 Exception:
+        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 Exception:
+        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 {};
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+
+    harness.ok(
+        threw,
+        "Should not allow inheriting from an interface that is only forward declared",
+    )
+
+    parser = parser.reset()
+    parser.parse(
+        """
+        interface A {
+            constructor();
+            constructor(long arg);
+            readonly attribute boolean x;
+            undefined foo();
+        };
+        partial interface A {
+            readonly attribute boolean y;
+            undefined foo(long arg);
+        };
+    """
+    )
+    results = parser.finish()
+    harness.check(len(results), 2, "Should have two results with partial interface")
+    iface = results[0]
+    harness.check(
+        len(iface.members), 3, "Should have three members with partial interface"
+    )
+    harness.check(
+        iface.members[0].identifier.name,
+        "x",
+        "First member should be x with partial interface",
+    )
+    harness.check(
+        iface.members[1].identifier.name,
+        "foo",
+        "Second member should be foo with partial interface",
+    )
+    harness.check(
+        len(iface.members[1].signatures()),
+        2,
+        "Should have two foo signatures with partial interface",
+    )
+    harness.check(
+        iface.members[2].identifier.name,
+        "y",
+        "Third member should be y with partial interface",
+    )
+    harness.check(
+        len(iface.ctor().signatures()),
+        2,
+        "Should have two constructors with partial interface",
+    )
+
+    parser = parser.reset()
+    parser.parse(
+        """
+        partial interface A {
+            readonly attribute boolean y;
+            undefined foo(long arg);
+        };
+        interface A {
+            constructor();
+            constructor(long arg);
+            readonly attribute boolean x;
+            undefined foo();
+        };
+    """
+    )
+    results = parser.finish()
+    harness.check(
+        len(results), 2, "Should have two results with reversed partial interface"
+    )
+    iface = results[1]
+    harness.check(
+        len(iface.members),
+        3,
+        "Should have three members with reversed partial interface",
+    )
+    harness.check(
+        iface.members[0].identifier.name,
+        "x",
+        "First member should be x with reversed partial interface",
+    )
+    harness.check(
+        iface.members[1].identifier.name,
+        "foo",
+        "Second member should be foo with reversed partial interface",
+    )
+    harness.check(
+        len(iface.members[1].signatures()),
+        2,
+        "Should have two foo signatures with reversed partial interface",
+    )
+    harness.check(
+        iface.members[2].identifier.name,
+        "y",
+        "Third member should be y with reversed partial interface",
+    )
+    harness.check(
+        len(iface.ctor().signatures()),
+        2,
+        "Should have two constructors with reversed partial interface",
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            interface A {
+                readonly attribute boolean x;
+            };
+            interface A {
+                readonly attribute boolean y;
+            };
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(threw, "Should not allow two non-partial interfaces with the same name")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            partial interface A {
+                readonly attribute boolean x;
+            };
+            partial interface A {
+                readonly attribute boolean y;
+            };
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(threw, "Must have a non-partial interface for a given name")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            dictionary  A {
+                boolean x;
+            };
+            partial interface A {
+                readonly attribute boolean y;
+            };
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw,
+        "Should not allow a name collision between partial interface "
+        "and other object",
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            dictionary A {
+                boolean x;
+            };
+            interface A {
+                readonly attribute boolean y;
+            };
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw, "Should not allow a name collision between interface " "and other object"
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            dictionary A {
+                boolean x;
+            };
+            interface A;
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw,
+        "Should not allow a name collision between external interface "
+        "and other object",
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            interface A {
+                readonly attribute boolean x;
+            };
+            interface A;
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw,
+        "Should not allow a name collision between external interface " "and interface",
+    )
+
+    parser = parser.reset()
+    parser.parse(
+        """
+        interface A;
+        interface A;
+    """
+    )
+    results = parser.finish()
+    harness.ok(
+        len(results) == 1 and isinstance(results[0], WebIDL.IDLExternalInterface),
+        "Should allow name collisions between external interface " "declarations",
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            [SomeRandomAnnotation]
+            interface A {
+                readonly attribute boolean y;
+            };
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(threw, "Should not allow unknown extended attributes on interfaces")
+
+    parser = parser.reset()
+    parser.parse(
+        """
+        [Global, Exposed=Window] interface Window {};
+        [Exposed=Window, LegacyWindowAlias=A]
+        interface B {};
+        [Exposed=Window, LegacyWindowAlias=(C, D)]
+        interface E {};
+    """
+    )
+    results = parser.finish()
+    harness.check(
+        results[1].legacyWindowAliases, ["A"], "Should support a single identifier"
+    )
+    harness.check(
+        results[2].legacyWindowAliases, ["C", "D"], "Should support an identifier list"
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            [LegacyWindowAlias]
+            interface A {};
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(threw, "Should not allow [LegacyWindowAlias] with no value")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            [Exposed=Worker, LegacyWindowAlias=B]
+            interface A {};
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(threw, "Should not allow [LegacyWindowAlias] without Window exposure")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            [Global, Exposed=Window] interface Window {};
+            [Exposed=Window]
+            interface A {};
+            [Exposed=Window, LegacyWindowAlias=A]
+            interface B {};
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw, "Should not allow [LegacyWindowAlias] to conflict with other identifiers"
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            [Global, Exposed=Window] interface Window {};
+            [Exposed=Window, LegacyWindowAlias=A]
+            interface B {};
+            [Exposed=Window]
+            interface A {};
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw, "Should not allow [LegacyWindowAlias] to conflict with other identifiers"
+    )
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse(
+            """
+            [Global, Exposed=Window] interface Window {};
+            [Exposed=Window, LegacyWindowAlias=A]
+            interface B {};
+            [Exposed=Window, LegacyWindowAlias=A]
+            interface C {};
+        """
+        )
+        results = parser.finish()
+    except Exception:
+        threw = True
+    harness.ok(
+        threw, "Should not allow [LegacyWindowAlias] to conflict with other identifiers"
+    )