Remove --harmony-array-includes flag

test/mjsunit/harmony/array-includes.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: --harmony-array-includes
-
-// Largely ported from
-// https://github.com/tc39/Array.prototype.includes/tree/master/test
-// using https://www.npmjs.org/package/test262-to-mjsunit with further edits
-
-
-// Array.prototype.includes sees a new element added by a getter that is hit
-// during iteration
-(function() {
-  var arrayLike = {
-    length: 5,
-    0: "a",
-
-    get 1() {
-      this[2] = "c";
-      return "b";
-    }
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLike, "c"));
-})();
-
-
-// Array.prototype.includes works on array-like objects
-(function() {
-  var arrayLike1 = {
-    length: 5,
-    0: "a",
-    1: "b"
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLike1, "a"));
-  assertFalse(Array.prototype.includes.call(arrayLike1, "c"));
-
-  var arrayLike2 = {
-    length: 2,
-    0: "a",
-    1: "b",
-    2: "c"
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLike2, "b"));
-  assertFalse(Array.prototype.includes.call(arrayLike2, "c"));
-})();
-
-
-// Array.prototype.includes should fail if used on a null or undefined this
-(function() {
-  assertThrows(function() {
-    Array.prototype.includes.call(null, "a");
-  }, TypeError);
-
-  assertThrows(function() {
-    Array.prototype.includes.call(undefined, "a");
-  }, TypeError);
-})();
-
-
-// Array.prototype.includes should terminate if getting an index throws an
-// exception
-(function() {
-  function Test262Error() {}
-
-  var trappedZero = {
-    length: 2,
-
-    get 0() {
-      throw new Test262Error();
-    },
-
-    get 1() {
-      assertUnreachable("Should not try to get the first element");
-    }
-  };
-
-  assertThrows(function() {
-    Array.prototype.includes.call(trappedZero, "a");
-  }, Test262Error);
-})();
-
-
-// Array.prototype.includes should terminate if ToNumber ends up being called on
-// a symbol fromIndex
-(function() {
-  var trappedZero = {
-    length: 1,
-
-    get 0() {
-      assertUnreachable("Should not try to get the zeroth element");
-    }
-  };
-
-  assertThrows(function() {
-    Array.prototype.includes.call(trappedZero, "a", Symbol());
-  }, TypeError);
-})();
-
-
-// Array.prototype.includes should terminate if an exception occurs converting
-// the fromIndex to a number
-(function() {
-  function Test262Error() {}
-
-  var fromIndex = {
-    valueOf: function() {
-      throw new Test262Error();
-    }
-  };
-
-  var trappedZero = {
-    length: 1,
-
-    get 0() {
-      assertUnreachable("Should not try to get the zeroth element");
-    }
-  };
-
-  assertThrows(function() {
-    Array.prototype.includes.call(trappedZero, "a", fromIndex);
-  }, Test262Error);
-})();
-
-
-// Array.prototype.includes should terminate if an exception occurs getting the
-// length
-(function() {
-  function Test262Error() {}
-
-  var fromIndexTrap = {
-    valueOf: function() {
-      assertUnreachable("Should not try to call ToInteger on valueOf");
-    }
-  };
-
-  var throwingLength = {
-    get length() {
-      throw new Test262Error();
-    },
-
-    get 0() {
-      assertUnreachable("Should not try to get the zeroth element");
-    }
-  };
-
-  assertThrows(function() {
-    Array.prototype.includes.call(throwingLength, "a", fromIndexTrap);
-  }, Test262Error);
-})();
-
-
-// Array.prototype.includes should terminate if ToLength ends up being called on
-// a symbol length
-(function() {
-  var fromIndexTrap = {
-    valueOf: function() {
-      assertUnreachable("Should not try to call ToInteger on valueOf");
-    }
-  };
-
-  var badLength = {
-    length: Symbol(),
-
-    get 0() {
-      assertUnreachable("Should not try to get the zeroth element");
-    }
-  };
-
-  assertThrows(function() {
-    Array.prototype.includes.call(badLength, "a", fromIndexTrap);
-  }, TypeError);
-})();
-
-
-// Array.prototype.includes should terminate if an exception occurs converting
-// the length to a number
-(function() {
-  function Test262Error() {}
-
-  var fromIndexTrap = {
-    valueOf: function() {
-      assertUnreachable("Should not try to call ToInteger on valueOf");
-    }
-  };
-
-  var badLength = {
-    length: {
-      valueOf: function() {
-        throw new Test262Error();
-      }
-    },
-
-    get 0() {
-      assertUnreachable("Should not try to get the zeroth element");
-    }
-  };
-
-  assertThrows(function() {
-    Array.prototype.includes.call(badLength, "a", fromIndexTrap);
-  }, Test262Error);
-})();
-
-
-// Array.prototype.includes should search the whole array, as the optional
-// second argument fromIndex defaults to 0
-(function() {
-  assertTrue([10, 11].includes(10));
-  assertTrue([10, 11].includes(11));
-
-  var arrayLike = {
-    length: 2,
-
-    get 0() {
-      return "1";
-    },
-
-    get 1() {
-      return "2";
-    }
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLike, "1"));
-  assertTrue(Array.prototype.includes.call(arrayLike, "2"));
-})();
-
-
-// Array.prototype.includes returns false if fromIndex is greater or equal to
-// the length of the array
-(function() {
-  assertFalse([1, 2].includes(2, 3));
-  assertFalse([1, 2].includes(2, 2));
-
-  var arrayLikeWithTrap = {
-    length: 2,
-
-    get 0() {
-      assertUnreachable("Getter for 0 was called");
-    },
-
-    get 1() {
-      assertUnreachable("Getter for 1 was called");
-    }
-  };
-
-  assertFalse(Array.prototype.includes.call(arrayLikeWithTrap, "c", 2));
-  assertFalse(Array.prototype.includes.call(arrayLikeWithTrap, "c", 3));
-})();
-
-
-// Array.prototype.includes searches the whole array if the computed index from
-// the given negative fromIndex argument is less than 0
-(function() {
-  assertTrue([1, 3].includes(1, -4));
-  assertTrue([1, 3].includes(3, -4));
-
-  var arrayLike = {
-    length: 2,
-    0: "a",
-
-    get 1() {
-      return "b";
-    },
-
-    get "-1"() {
-      assertUnreachable("Should not try to get the element at index -1");
-    }
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLike, "a", -4));
-  assertTrue(Array.prototype.includes.call(arrayLike, "b", -4));
-})();
-
-
-// Array.prototype.includes should use a negative value as the offset from the
-// end of the array to compute fromIndex
-(function() {
-  assertTrue([12, 13].includes(13, -1));
-  assertFalse([12, 13].includes(12, -1));
-  assertTrue([12, 13].includes(12, -2));
-
-  var arrayLike = {
-    length: 2,
-
-    get 0() {
-      return "a";
-    },
-
-    get 1() {
-      return "b";
-    }
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLike, "b", -1));
-  assertFalse(Array.prototype.includes.call(arrayLike, "a", -1));
-  assertTrue(Array.prototype.includes.call(arrayLike, "a", -2));
-})();
-
-
-// Array.prototype.includes converts its fromIndex parameter to an integer
-(function() {
-  assertFalse(["a", "b"].includes("a", 2.3));
-
-  var arrayLikeWithTraps = {
-    length: 2,
-
-    get 0() {
-      assertUnreachable("Getter for 0 was called");
-    },
-
-    get 1() {
-      assertUnreachable("Getter for 1 was called");
-    }
-  };
-
-  assertFalse(Array.prototype.includes.call(arrayLikeWithTraps, "c", 2.1));
-  assertFalse(Array.prototype.includes.call(arrayLikeWithTraps, "c", +Infinity));
-  assertTrue(["a", "b", "c"].includes("a", -Infinity));
-  assertTrue(["a", "b", "c"].includes("c", 2.9));
-  assertTrue(["a", "b", "c"].includes("c", NaN));
-
-  var arrayLikeWithTrapAfterZero = {
-    length: 2,
-
-    get 0() {
-      return "a";
-    },
-
-    get 1() {
-      assertUnreachable("Getter for 1 was called");
-    }
-  };
-
-  assertTrue(Array.prototype.includes.call(arrayLikeWithTrapAfterZero, "a", NaN));
-
-  var numberLike = {
-    valueOf: function() {
-      return 2;
-    }
-  };
-
-  assertFalse(["a", "b", "c"].includes("a", numberLike));
-  assertFalse(["a", "b", "c"].includes("a", "2"));
-  assertTrue(["a", "b", "c"].includes("c", numberLike));
-  assertTrue(["a", "b", "c"].includes("c", "2"));
-})();
-
-
-// Array.prototype.includes should have length 1
-(function() {
-  assertEquals(1, Array.prototype.includes.length);
-})();
-
-
-// Array.prototype.includes should have name property with value 'includes'
-(function() {
-  assertEquals("includes", Array.prototype.includes.name);
-})();
-
-
-// !!! Test failed to convert:
-// Cannot convert tests with includes.
-// !!!
-
-
-// Array.prototype.includes does not skip holes; if the array has a prototype it
-// gets from that
-(function() {
-  var holesEverywhere = [,,,];
-
-  holesEverywhere.__proto__ = {
-    1: "a"
-  };
-
-  holesEverywhere.__proto__.__proto__ = Array.prototype;
-  assertTrue(holesEverywhere.includes("a"));
-  var oneHole = ["a", "b",, "d"];
-
-  oneHole.__proto__ = {
-    get 2() {
-      return "c";
-    }
-  };
-
-  assertTrue(Array.prototype.includes.call(oneHole, "c"));
-})();
-
-
-// Array.prototype.includes does not skip holes; instead it treates them as
-// undefined
-(function() {
-  assertTrue([,,,].includes(undefined));
-  assertTrue(["a", "b",, "d"].includes(undefined));
-})();
-
-
-// Array.prototype.includes gets length property from the prototype if it's
-// available
-(function() {
-  var proto = {
-    length: 1
-  };
-
-  var arrayLike = Object.create(proto);
-  arrayLike[0] = "a";
-
-  Object.defineProperty(arrayLike, "1", {
-    get: function() {
-      assertUnreachable("Getter for 1 was called");
-    }
-  });
-
-  assertTrue(Array.prototype.includes.call(arrayLike, "a"));
-})();
-
-
-// Array.prototype.includes treats a missing length property as zero
-(function() {
-  var arrayLikeWithTraps = {
-    get 0() {
-      assertUnreachable("Getter for 0 was called");
-    },
-
-    get 1() {
-      assertUnreachable("Getter for 1 was called");
-    }
-  };
-
-  assertFalse(Array.prototype.includes.call(arrayLikeWithTraps, "a"));
-})();
-
-
-// Array.prototype.includes should always return false on negative-length
-// objects
-(function() {
-  assertFalse(Array.prototype.includes.call({
-    length: -1
-  }, 2));
-
-  assertFalse(Array.prototype.includes.call({
-    length: -2
-  }));
-
-  assertFalse(Array.prototype.includes.call({
-    length: -Infinity
-  }, undefined));
-
-  assertFalse(Array.prototype.includes.call({
-    length: -Math.pow(2, 53)
-  }, NaN));
-
-  assertFalse(Array.prototype.includes.call({
-    length: -1,
-    "-1": 2
-  }, 2));
-
-  assertFalse(Array.prototype.includes.call({
-    length: -3,
-    "-1": 2
-  }, 2));
-
-  assertFalse(Array.prototype.includes.call({
-    length: -Infinity,
-    "-1": 2
-  }, 2));
-
-  var arrayLikeWithTrap = {
-    length: -1,
-
-    get 0() {
-      assertUnreachable("Getter for 0 was called");
-    }
-  };
-
-  assertFalse(Array.prototype.includes.call(arrayLikeWithTrap, 2));
-})();
-
-
-// Array.prototype.includes should clamp positive lengths to 2^53 - 1
-(function() {
-  var fromIndexForLargeIndexTests = 9007199254740990;
-
-  assertFalse(Array.prototype.includes.call({
-    length: 1
-  }, 2));
-
-  assertTrue(Array.prototype.includes.call({
-    length: 1,
-    0: "a"
-  }, "a"));
-
-  assertTrue(Array.prototype.includes.call({
-    length: +Infinity,
-    0: "a"
-  }, "a"));
-
-  assertFalse(Array.prototype.includes.call({
-    length: +Infinity
-  }, "a", fromIndexForLargeIndexTests));
-
-  var arrayLikeWithTrap = {
-    length: +Infinity,
-
-    get 9007199254740992() {
-      assertUnreachable("Getter for 9007199254740992 (i.e. 2^53) was called");
-    },
-
-    "9007199254740993": "a"
-  };
-
-  assertFalse(
-    Array.prototype.includes.call(arrayLikeWithTrap, "a", fromIndexForLargeIndexTests)
-  );
-
-  var arrayLikeWithTooBigLength = {
-    length: 9007199254740996,
-    "9007199254740992": "a"
-  };
-
-  assertFalse(
-    Array.prototype.includes.call(arrayLikeWithTooBigLength, "a", fromIndexForLargeIndexTests)
-  );
-})();
-
-
-// Array.prototype.includes should always return false on zero-length objects
-(function() {
-  assertFalse([].includes(2));
-  assertFalse([].includes());
-  assertFalse([].includes(undefined));
-  assertFalse([].includes(NaN));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0
-  }, 2));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0
-  }));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0
-  }, undefined));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0
-  }, NaN));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0,
-    0: 2
-  }, 2));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0,
-    0: undefined
-  }));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0,
-    0: undefined
-  }, undefined));
-
-  assertFalse(Array.prototype.includes.call({
-    length: 0,
-    0: NaN
-  }, NaN));
-
-  var arrayLikeWithTrap = {
-    length: 0,
-
-    get 0() {
-      assertUnreachable("Getter for 0 was called");
-    }
-  };
-
-  Array.prototype.includes.call(arrayLikeWithTrap);
-
-  var trappedFromIndex = {
-    valueOf: function() {
-      assertUnreachable("Should not try to convert fromIndex to a number on a zero-length array");
-    }
-  };
-
-  [].includes("a", trappedFromIndex);
-
-  Array.prototype.includes.call({
-    length: 0
-  }, trappedFromIndex);
-})();
-
-
-// Array.prototype.includes works on objects
-(function() {
-  assertFalse(["a", "b", "c"].includes({}));
-  assertFalse([{}, {}].includes({}));
-  var obj = {};
-  assertTrue([obj].includes(obj));
-  assertFalse([obj].includes(obj, 1));
-  assertTrue([obj, obj].includes(obj, 1));
-
-  var stringyObject = {
-    toString: function() {
-      return "a";
-    }
-  };
-
-  assertFalse(["a", "b", obj].includes(stringyObject));
-})();
-
-
-// Array.prototype.includes does not see an element removed by a getter that is
-// hit during iteration
-(function() {
-  var arrayLike = {
-    length: 5,
-    0: "a",
-
-    get 1() {
-      delete this[2];
-      return "b";
-    },
-
-    2: "c"
-  };
-
-  assertFalse(Array.prototype.includes.call(arrayLike, "c"));
-})();
-
-
-// Array.prototype.includes should use the SameValueZero algorithm to compare
-(function() {
-  assertTrue([1, 2, 3].includes(2));
-  assertFalse([1, 2, 3].includes(4));
-  assertTrue([1, 2, NaN].includes(NaN));
-  assertTrue([1, 2, -0].includes(+0));
-  assertTrue([1, 2, -0].includes(-0));
-  assertTrue([1, 2, +0].includes(-0));
-  assertTrue([1, 2, +0].includes(+0));
-  assertFalse([1, 2, -Infinity].includes(+Infinity));
-  assertTrue([1, 2, -Infinity].includes(-Infinity));
-  assertFalse([1, 2, +Infinity].includes(-Infinity));
-  assertTrue([1, 2, +Infinity].includes(+Infinity));
-})();
-
-
-// Array.prototype.includes stops once it hits the length of an array-like, even
-// if there are more after
-(function() {
-  var arrayLike = {
-    length: 2,
-    0: "a",
-    1: "b",
-
-    get 2() {
-      assertUnreachable("Should not try to get the second element");
-    }
-  };
-
-  assertFalse(Array.prototype.includes.call(arrayLike, "c"));
-})();
-
-
-// Array.prototype.includes works on typed arrays
-(function() {
-  assertTrue(Array.prototype.includes.call(new Uint8Array([1, 2, 3]), 2));
-
-  assertTrue(
-    Array.prototype.includes.call(new Float32Array([2.5, 3.14, Math.PI]), 3.1415927410125732)
-  );
-
-  assertFalse(Array.prototype.includes.call(new Uint8Array([1, 2, 3]), 4));
-  assertFalse(Array.prototype.includes.call(new Uint8Array([1, 2, 3]), 2, 2));
-})();