Fix TypeError message for Reflect.construct

test/mjsunit/es6/reflect-construct.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Flags: --allow-unsafe-function-constructor
 
 
 (function testReflectConstructArity() {
   assertEquals(2, Reflect.construct.length);
 })();
 
 
 (function testReflectConstructNonConstructor() {
   assertThrows(function() {
     new Reflect.construct(function(){}, []);
   }, TypeError);
 })();
 
 
+(function testReflectConstructArg1NonConstructor() {
+  try {
+    Reflect.construct(() => {}, []);
+  } catch (e) {
+    assertInstanceof(e, TypeError);
+    assertEquals("() => {} is not a constructor", e.message);
+    return;
+  }
+  assertUnreachable("Exception expected");
+})();
+
+
+(function testReflectConstructArg3NonConstructor() {
+  try {
+    Reflect.construct(function() {}, [], () => {});
+  } catch (e) {
+    assertInstanceof(e, TypeError);
+    assertEquals("() => {} is not a constructor", e.message);
+    return;
+  }
+  assertUnreachable("Exception expected");
+})();
+
+
 (function testReflectConstructBasic() {
   function Constructor() { "use strict"; }
   assertInstanceof(Reflect.construct(Constructor, []), Constructor);
 })();
 
 
 (function testReflectConstructBasicSloppy() {
   function Constructor() {}
   assertInstanceof(Reflect.construct(Constructor, []), Constructor);
 })();
@@ skipping 339 matching lines @@
       for (var realm of [realm1, realm2]) {
         test(realm, getname(intrinsic), getargs(intrinsic), convert);
       }
     }
   }
 
   test_all(test_intrinsic_default, (v)=>v);
   test_all(test_intrinsic_default,
            (v)=>{ "use strict"; return class extends v {}});
 })();