Revert of [es6] don't throw if argument is non-object (O.freeze, O.seal, O.preventExtensions)

test/mjsunit/object-seal.js

Index: test/mjsunit/object-seal.js
diff --git a/test/mjsunit/object-seal.js b/test/mjsunit/object-seal.js
index ef1b16d9061d0d9bb75539812d577aa29e4622c7..3c46ab236cda0154e0ba71311bcc04123eab2735 100644
--- a/test/mjsunit/object-seal.js
+++ b/test/mjsunit/object-seal.js
@@ -25,20 +25,33 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Tests the Object.seal and Object.isSealed methods - ES 19.1.2.17 and
-// ES 19.1.2.13
+// Tests the Object.seal and Object.isSealed methods - ES 15.2.3.9 and
+// ES 15.2.3.12
 
 // Flags: --allow-natives-syntax --noalways-opt
 
-// Test that we return obj if non-object is passed as argument
-var non_objects = new Array(undefined, null, 1, -1, 0, 42.43, Symbol("test"));
+// Test that we throw an error if an object is not passed as argument.
+var non_objects = new Array(undefined, null, 1, -1, 0, 42.43);
 for (var key in non_objects) {
-  assertSame(non_objects[key], Object.seal(non_objects[key]));
-}
-
-// Test that isFrozen always returns true for non-objects
+  var exception = false;
+  try {
+    Object.seal(non_objects[key]);
+  } catch(e) {
+    exception = true;
+    assertTrue(/Object.seal called on non-object/.test(e));
+  }
+  assertTrue(exception);
+}
+
 for (var key in non_objects) {
-  assertTrue(Object.isSealed(non_objects[key]));
+  exception = false;
+  try {
+    Object.isSealed(non_objects[key]);
+  } catch(e) {
+    exception = true;
+    assertTrue(/Object.isSealed called on non-object/.test(e));
+  }
+  assertTrue(exception);
 }
 
 // Test normal data properties.
@@ -383,9 +396,3 @@
 Object.seal(obj);
 assertTrue(%HasFastProperties(obj));
 assertTrue(Object.isSealed(obj));
-
-function Sealed() {}
-Object.seal(Sealed);
-assertDoesNotThrow(function() { return new Sealed(); });
-Sealed.prototype.prototypeExists = true;
-assertTrue((new Sealed()).prototypeExists);