Make DataView setters throw when only offset is provided.

test/mjsunit/harmony/dataview-accessors.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 371 matching lines @@
 TestOutOfRange();
 
 function TestGeneralAccessors() {
   var a = new DataView(new ArrayBuffer(256));
   function CheckAccessor(name) {
     var f = a[name];
     assertThrows(function() { f(); }, TypeError);
     f.call(a, 0, 0); // should not throw
     assertThrows(function() { f.call({}, 0, 0); }, TypeError);
     assertThrows(function() { f.call(a); }, TypeError);
+    if (name.indexOf("set") == 0) {
+      assertThrows(function() { f.call(a, 1); }, TypeError);
+    } else {
+      f.call(a, 1); // should not throw
+    }
   }
   CheckAccessor("getUint8");
   CheckAccessor("setUint8");
   CheckAccessor("getInt8");
   CheckAccessor("setInt8");
   CheckAccessor("getUint16");
   CheckAccessor("setUint16");
   CheckAccessor("getInt16");
   CheckAccessor("setInt16");
   CheckAccessor("getUint32");
   CheckAccessor("setUint32");
   CheckAccessor("getInt32");
   CheckAccessor("setInt32");
   CheckAccessor("getFloat32");
   CheckAccessor("setFloat32");
   CheckAccessor("getFloat64");
   CheckAccessor("setFloat64");
 }
 
 TestGeneralAccessors();
+
+function TestInsufficientArguments() {
+  var a = new DataView(new ArrayBuffer(256));
+
+  assertThrows(function() { a.getUint8(); }, TypeError);
+  assertThrows(function() { a.getInt8(); }, TypeError);
+  assertThrows(function() { a.getUint16(); }, TypeError);
+  assertThrows(function() { a.getInt16(); }, TypeError);
+  assertThrows(function() { a.getUint32(); }, TypeError);
+  assertThrows(function() { a.getInt32(); }, TypeError);
+  assertThrows(function() { a.getFloat32(); }, TypeError);
+  assertThrows(function() { a.getFloat64(); }, TypeError);
+
+  assertThrows(function() { a.setUint8(); }, TypeError);
+  assertThrows(function() { a.setInt8(); }, TypeError);
+  assertThrows(function() { a.setUint16(); }, TypeError);
+  assertThrows(function() { a.setInt16(); }, TypeError);
+  assertThrows(function() { a.setUint32(); }, TypeError);
+  assertThrows(function() { a.setInt32(); }, TypeError);
+  assertThrows(function() { a.setFloat32(); }, TypeError);
+  assertThrows(function() { a.setFloat64(); }, TypeError);
+
+  assertThrows(function() { a.setUint8(1) }, TypeError);
+  assertThrows(function() { a.setInt8(1) }, TypeError);
+  assertThrows(function() { a.setUint16(1) }, TypeError);
+  assertThrows(function() { a.setInt16(1) }, TypeError);
+  assertThrows(function() { a.setUint32(1) }, TypeError);
+  assertThrows(function() { a.setInt32(1) }, TypeError);
+  assertThrows(function() { a.setFloat32(1) }, TypeError);
+  assertThrows(function() { a.setFloat64(1) }, TypeError);
+}
+
+TestInsufficientArguments();