1 files changed, 76 insertions, 0 deletions
diff --git a/dom/bindings/parser/tests/test_typedef.py b/dom/bindings/parser/tests/test_typedef.py
new file mode 100644
index 000000000..8921985c5
--- /dev/null
+++ b/dom/bindings/parser/tests/test_typedef.py
@@ -0,0 +1,76 @@
+def WebIDLTest(parser, harness):
+    parser.parse("""
+      typedef long mylong;
+      typedef long? mynullablelong;
+      interface Foo {
+        const mylong X = 5;
+        const mynullablelong Y = 7;
+        const mynullablelong Z = null;
+        void foo(mylong arg);
+      };
+    """)
+
+    results = parser.finish()
+
+    harness.check(results[2].members[1].type.name, "LongOrNull",
+                  "Should expand typedefs")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse("""
+          typedef long? mynullablelong;
+          interface Foo {
+            void foo(mynullablelong? Y);
+          };
+        """)
+        results = parser.finish()
+    except:
+        threw = True
+
+    harness.ok(threw, "Should have thrown on nullable inside nullable arg.")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse("""
+          typedef long? mynullablelong;
+          interface Foo {
+            const mynullablelong? X = 5;
+          };
+        """)
+        results = parser.finish()
+    except:
+        threw = True
+
+    harness.ok(threw, "Should have thrown on nullable inside nullable const.")
+    
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse("""
+          interface Foo {
+            const mynullablelong? X = 5;
+          };
+          typedef long? mynullablelong;
+        """)
+        results = parser.finish()
+    except:
+        threw = True
+
+    harness.ok(threw,
+               "Should have thrown on nullable inside nullable const typedef "
+               "after interface.")
+
+    parser = parser.reset()
+    parser.parse("""
+      interface Foo {
+        const mylong X = 5;
+      };
+      typedef long mylong;
+    """)
+
+    results = parser.finish()
+
+    harness.check(results[0].members[0].type.name, "Long",
+                  "Should expand typedefs that come before interface")