1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/ecma_7/TypedObject/structtypereflection.js b/js/src/tests/ecma_7/TypedObject/structtypereflection.js
new file mode 100644
index 000000000..0904401ed
--- /dev/null
+++ b/js/src/tests/ecma_7/TypedObject/structtypereflection.js
@@ -0,0 +1,47 @@
+// |reftest| skip-if(!this.hasOwnProperty("TypedObject"))
+var BUGNUMBER = 578700;
+var summary = 'TypedObjects: check reflection on StructType objects';
+
+var ArrayType = TypedObject.ArrayType;
+var StructType = TypedObject.StructType;
+var uint8 = TypedObject.uint8;
+var uint16 = TypedObject.uint16;
+var uint32 = TypedObject.uint32;
+var uint8Clamped = TypedObject.uint8Clamped;
+var int8 = TypedObject.int8;
+var int16 = TypedObject.int16;
+var int32 = TypedObject.int32;
+var float32 = TypedObject.float32;
+var float64 = TypedObject.float64;
+
+function runTests() {
+    print(BUGNUMBER + ": " + summary);
+
+    var S = new StructType({x: int32, y: uint8, z: float64});
+    assertEq(S.__proto__, StructType.prototype);
+    assertEq(S.prototype.__proto__, StructType.prototype.prototype);
+    assertEq(S.toSource(), "new StructType({x: int32, y: uint8, z: float64})");
+    assertEq(S.byteLength, 16);
+    assertEq(S.byteAlignment, 8);
+    var fieldNames = Object.getOwnPropertyNames(S.fieldTypes);
+    assertEq(fieldNames[0], "x");
+    assertEq(fieldNames[1], "y");
+    assertEq(fieldNames[2], "z");
+    assertEq(fieldNames.length, 3);
+    assertEq(S.fieldTypes.x, int32);
+    assertEq(S.fieldTypes.y, uint8);
+    assertEq(S.fieldTypes.z, float64);
+    assertEq(S.fieldOffsets.x, 0);
+    assertEq(S.fieldOffsets.y, 4);
+    assertEq(S.fieldOffsets.z, 8);
+
+    // fieldTypes and fieldOffsets should be frozen
+    assertEq(Object.isFrozen(S.fieldTypes), true);
+    assertEq(Object.isFrozen(S.fieldOffsets), true);
+
+    if (typeof reportCompare === "function")
+        reportCompare(true, true);
+    print("Tests complete");
+}
+
+runTests();