Stage ES6 generators

test/mjsunit/harmony/generators-objects.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
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Flags: --harmony-generators --harmony-scoping --allow-natives-syntax
-
-// Test instantations of generators.
-
-// Generators shouldn't allocate stack slots.  This test will abort in debug
-// mode if generators have stack slots.
-function TestContextAllocation() {
-  function* g1(a, b, c) { yield 1; return [a, b, c]; }
-  function* g2() { yield 1; return arguments; }
-  function* g3() { yield 1; return this; }
-  function* g4() { var x = 10; yield 1; return x; }
-  // Temporary variable context allocation
-  function* g5(l) { "use strict"; yield 1; for (let x in l) { yield x; } }
-
-  g1();
-  g2();
-  g3();
-  g4();
-  g5(["foo"]);
-}
-TestContextAllocation();
-
-
-// Test the properties and prototype of a generator object.
-function TestGeneratorObject() {
-  function* g() { yield 1; }
-
-  var iter = g();
-  assertSame(g.prototype, Object.getPrototypeOf(iter));
-  assertTrue(iter instanceof g);
-  assertEquals("Generator", %_ClassOf(iter));
-  assertEquals("[object Generator]", String(iter));
-  assertEquals([], Object.getOwnPropertyNames(iter));
-  assertTrue(iter !== g());
-
-  // g() is the same as new g().
-  iter = new g();
-  assertSame(g.prototype, Object.getPrototypeOf(iter));
-  assertTrue(iter instanceof g);
-  assertEquals("Generator", %_ClassOf(iter));
-  assertEquals("[object Generator]", String(iter));
-  assertEquals([], Object.getOwnPropertyNames(iter));
-  assertTrue(iter !== new g());
-}
-TestGeneratorObject();
-
-
-// Test the methods of generator objects.
-function TestGeneratorObjectMethods() {
-  function* g() { yield 1; }
-  var iter = g();
-
-  function TestNonGenerator(non_generator) {
-    assertThrows(function() { iter.next.call(non_generator); }, TypeError);
-    assertThrows(function() { iter.next.call(non_generator, 1); }, TypeError);
-    assertThrows(function() { iter.throw.call(non_generator, 1); }, TypeError);
-    assertThrows(function() { iter.close.call(non_generator); }, TypeError);
-  }
-
-  TestNonGenerator(1);
-  TestNonGenerator({});
-  TestNonGenerator(function(){});
-  TestNonGenerator(g);
-  TestNonGenerator(g.prototype);
-}
-TestGeneratorObjectMethods();