Remove --harmony-exponentiation-operator flag

test/mjsunit/harmony/exponentiation-operator.js

-// Copyright 2016 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: --harmony-exponentiation-operator
-
-function TestBasic() {
-  assertEquals(-(8 ** 2), -64);
-  assertEquals(+(8 ** 2), 64);
-  assertEquals(~(8 ** 2), -65);
-  assertEquals(!(8 ** 2), false);
-
-  assertEquals(2 ** -2, 0.25);
-
-  var o = { p: 1 };
-  assertEquals(2 ** delete o.p, 2);
-
-  assertEquals(2 ** void 1, NaN);
-
-  assertEquals(2 ** typeof 1, NaN);
-
-  var s = "2";
-  var n = 2;
-
-  assertEquals(2 ** "2", 4);
-  assertEquals(2 ** +"2", 4);
-  assertEquals(2 ** +s, 4);
-  assertEquals(2 ** s, 4);
-  assertEquals(2 ** 2, 4);
-  assertEquals(2 ** +2, 4);
-  assertEquals(2 ** +n, 4);
-  assertEquals(2 ** n, 4);
-
-  assertEquals(2 ** -"2", 0.25);
-  assertEquals(2 ** -s, 0.25);
-  assertEquals(2 ** -2, 0.25);
-  assertEquals(2 ** -n, 0.25);
-
-  assertEquals(2 ** ~"2", 0.125);
-  assertEquals(2 ** ~s, 0.125);
-  assertEquals(2 ** ~2, 0.125);
-  assertEquals(2 ** ~n, 0.125);
-
-  assertEquals(2 ** !"2", 1);
-  assertEquals(2 ** !s, 1);
-  assertEquals(2 ** !2, 1);
-  assertEquals(2 ** !n, 1);
-
- var exponent = 2;
- assertEquals(2 ** 3, 8);
- assertEquals(3 * 2 ** 3, 24);
- assertEquals(2 ** ++exponent, 8);
- assertEquals(2 ** -1 * 2, 1);
- assertEquals(2 ** 2 * 4, 16);
- assertEquals(2 ** 2 / 2, 2);
- assertEquals(2 ** (3 ** 2), 512);
- assertEquals(2 ** 3 ** 2, 512);
- assertEquals(2 * 3 ** 2, 18);
- assertEquals(16 / 2 ** 2, 4);
-}
-TestBasic();
-
-
-function TestAssignment() {
-  var base = -5;
-  assertEquals(base **= 3, -125);
-  assertEquals(base, -125);
-}
-TestAssignment();
-
-
-function TestPrecedence() {
-  var base = 4;
-  assertEquals(--base ** 2, 9);  // 3 ** 2
-  assertEquals(++base ** 2, 16); // 4 ** 2
-  assertEquals(base++ ** 2, 16); // 4 ** 2
-  assertEquals(base-- ** 2, 25); // 5 ** 2
-
-  assertEquals(4, base);
-  assertEquals(--base ** --base ** 2,
-               Math.pow(3, Math.pow(2, 2)));
-
-  assertEquals(2, base);
-  assertEquals(++base ** ++base ** 2,
-               Math.pow(3, Math.pow(4, 2)));
-
-  base = 4;
-  assertEquals(base-- ** base-- ** 2,
-               Math.pow(4, Math.pow(3, 2)));
-
-  assertEquals(2, base);
-  assertEquals(base++ ** base++ ** 2,
-               Math.pow(2, Math.pow(3, 2)));
-}
-TestPrecedence();
-
-
-function TestInvariants() {
-  assertEquals(NaN, 2 ** NaN);
-  assertEquals(NaN, (+0) ** NaN);
-  assertEquals(NaN, (-0) ** NaN);
-  assertEquals(NaN, Infinity ** NaN);
-  assertEquals(NaN, (-Infinity) ** NaN);
-
-  assertEquals(1, NaN ** +0);
-  assertEquals(1, NaN ** -0);
-
-  assertEquals(NaN, NaN ** NaN);
-  assertEquals(NaN, NaN ** 2.2);
-  assertEquals(NaN, NaN ** 1);
-  assertEquals(NaN, NaN ** -1);
-  assertEquals(NaN, NaN ** -2.2);
-  assertEquals(NaN, NaN ** Infinity);
-  assertEquals(NaN, NaN ** -Infinity);
-
-  assertEquals(Infinity, 1.1 ** Infinity);
-  assertEquals(Infinity, (-1.1) ** Infinity);
-  assertEquals(Infinity, 2 ** Infinity);
-  assertEquals(Infinity, (-2) ** Infinity);
-
-  // Because +0 == -0, we need to compare 1/{+,-}0 to {+,-}Infinity
-  assertEquals(+Infinity, 1/1.1 ** -Infinity);
-  assertEquals(+Infinity, 1/(-1.1) ** -Infinity);
-  assertEquals(+Infinity, 1/2 ** -Infinity);
-  assertEquals(+Infinity, 1/(-2) ** -Infinity);
-
-  assertEquals(NaN, 1 ** Infinity);
-  assertEquals(NaN, 1 ** -Infinity);
-  assertEquals(NaN, (-1) ** Infinity);
-  assertEquals(NaN, (-1) ** -Infinity);
-
-  assertEquals(+0, 0.1 ** Infinity);
-  assertEquals(+0, (-0.1) ** Infinity);
-  assertEquals(+0, 0.999 ** Infinity);
-  assertEquals(+0, (-0.999) ** Infinity);
-
-  assertEquals(Infinity, 0.1 ** -Infinity);
-  assertEquals(Infinity, (-0.1) ** -Infinity);
-  assertEquals(Infinity, 0.999 ** -Infinity);
-  assertEquals(Infinity, (-0.999) ** -Infinity);
-
-  assertEquals(Infinity, Infinity ** 0.1);
-  assertEquals(Infinity, Infinity ** 2);
-
-  assertEquals(+Infinity, 1/Infinity ** -0.1);
-  assertEquals(+Infinity, 1/Infinity ** -2);
-
-  assertEquals(-Infinity, (-Infinity) ** 3);
-  assertEquals(-Infinity, (-Infinity) ** 13);
-
-  assertEquals(Infinity, (-Infinity) ** 3.1);
-  assertEquals(Infinity, (-Infinity) ** 2);
-
-  assertEquals(-Infinity, 1/(-Infinity) ** -3);
-  assertEquals(-Infinity, 1/(-Infinity) ** -13);
-
-  assertEquals(+Infinity, 1/(-Infinity) ** -3.1);
-  assertEquals(+Infinity, 1/(-Infinity) ** -2);
-
-  assertEquals(+Infinity, 1/(+0) ** 1.1);
-  assertEquals(+Infinity, 1/(+0) ** 2);
-
-  assertEquals(Infinity, (+0) ** -1.1);
-  assertEquals(Infinity, (+0) ** -2);
-
-  assertEquals(-Infinity, 1/(-0) ** 3);
-  assertEquals(-Infinity, 1/(-0) ** 13);
-
-  assertEquals(+Infinity, 1/(-0) ** 3.1);
-  assertEquals(+Infinity, 1/(-0) ** 2);
-
-  assertEquals(-Infinity, (-0) ** -3);
-  assertEquals(-Infinity, (-0) ** -13);
-
-  assertEquals(Infinity, (-0) ** -3.1);
-  assertEquals(Infinity, (-0) ** -2);
-
-  assertEquals(NaN, (-0.00001) ** 1.1);
-  assertEquals(NaN, (-0.00001) ** -1.1);
-  assertEquals(NaN, (-1.1) ** 1.1);
-  assertEquals(NaN, (-1.1) ** -1.1);
-  assertEquals(NaN, (-2) ** 1.1);
-  assertEquals(NaN, (-2) ** -1.1);
-  assertEquals(NaN, (-1000) ** 1.1);
-  assertEquals(NaN, (-1000) ** -1.1);
-
-  assertEquals(+Infinity, 1/(-0) ** 0.5);
-  assertEquals(+Infinity, 1/(-0) ** 0.6);
-  assertEquals(-Infinity, 1/(-0) ** 1);
-  assertEquals(-Infinity, 1/(-0) ** 10000000001);
-
-  assertEquals(+Infinity, (-0) ** -0.5);
-  assertEquals(+Infinity, (-0) ** -0.6);
-  assertEquals(-Infinity, (-0) ** -1);
-  assertEquals(-Infinity, (-0) ** -10000000001);
-
-  assertEquals(4, 16 ** 0.5);
-  assertEquals(NaN, (-16) ** 0.5);
-  assertEquals(0.25, 16 ** -0.5);
-  assertEquals(NaN, (-16) ** -0.5);
-}
-TestInvariants();
-
-
-function TestOperationOrder() {
-  var log = [];
-  var handler = {
-    get(t, n) {
-      var result = Reflect.get(t, n);
-      var str = typeof result === "object" ? "[object Object]" : String(result);
-      log.push(`[[Get]](${String(n)}) -> ${str}`);
-      return result;
-    },
-    set(t, n, v) {
-      var result = Reflect.set(t, n, v);
-      log.push(`[[Set]](${String(n)}, ${String(v)}) -> ${String(result)}`);
-      return result;
-    },
-    has() { assertUnreachable("trap 'has' invoked"); },
-    deleteProperty() { assertUnreachable("trap 'deleteProperty' invoked"); },
-    ownKeys() { assertUnreachable("trap 'ownKeys' invoked"); },
-    apply() { assertUnreachable("trap 'apply' invoked"); },
-    construct() { assertUnreachable("trap 'construct' invoked"); },
-    getPrototypeOf() { assertUnreachable("trap 'getPrototypeOf' invoked"); },
-    setPrototypeOf() { assertUnreachable("trap 'setPrototypeOf' invoked"); },
-    isExtensible() { assertUnreachable("trap 'isExtensible' invoked"); },
-    preventExtensions() {
-      assertUnreachable("trap 'preventExtensions' invoked"); },
-    getOwnPropertyDescriptor() {
-      assertUnreachable("trap 'getOwnPropertyDescriptor' invoked"); },
-    defineProperty() { assertUnreachable("trap 'defineProperty' invoked"); },
-  };
-  var P = new Proxy({ x: 2 }, handler);
-
-  assertEquals(256, P.x **= "8");
-  assertEquals([
-    "[[Get]](x) -> 2",
-    "[[Set]](x, 256) -> true"
-  ], log);
-
-  log = [];
-  var O = new Proxy({ p: P }, handler);
-  assertEquals(65536, O.p.x **= 2 );
-  assertEquals([
-    "[[Get]](p) -> [object Object]",
-    "[[Get]](x) -> 256",
-    "[[Set]](x, 65536) -> true"
-  ], log);
-}
-TestOperationOrder();
-
-
-function TestOverrideMathPow() {
-  var MathPow = MathPow;
-  Math.pow = function(a, b) {
-    assertUnreachable(`Math.pow(${String(a)}, ${String(b)}) invoked`);
-  }
-
-  TestBasic();
-  TestAssignment();
-  TestInvariants();
-  TestOperationOrder();
-
-  Math.pow = MathPow;
-}
-TestOverrideMathPow();
-
-function TestBadAssignmentLHS() {
-  assertThrows("if (false) { 17 **= 10; }", ReferenceError);
-  assertThrows("if (false) { '17' **= 10; }", ReferenceError);
-  assertThrows("if (false) { /17/ **= 10; }", ReferenceError);
-  assertThrows("if (false) { ({ valueOf() { return 17; } } **= 10); }",
-               ReferenceError);
-  // TODO(caitp): a Call expression as LHS should be an early ReferenceError!
-  // assertThrows("if (false) { Array() **= 10; }", ReferenceError);
-  assertThrows(() => Array() **= 10, ReferenceError);
-}
-TestBadAssignmentLHS();