Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 339 insertions, 0 deletions

diff --git a/js/src/tests/non262/shell.js b/js/src/tests/non262/shell.js
new file mode 100644
index 0000000000..2e4f9e5224
--- /dev/null
+++ b/js/src/tests/non262/shell.js
@@ -0,0 +1,339 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+(function(global) {
+  const undefined = void 0;
+
+  /*
+   * completesNormally(CODE) returns true if evaluating CODE (as eval
+   * code) completes normally (rather than throwing an exception).
+   */
+  global.completesNormally = function completesNormally(code) {
+    try {
+      eval(code);
+      return true;
+    } catch (exception) {
+      return false;
+    }
+  }
+
+  /*
+   * raisesException(EXCEPTION)(CODE) returns true if evaluating CODE (as
+   * eval code) throws an exception object that is an instance of EXCEPTION,
+   * and returns false if it throws any other error or evaluates
+   * successfully. For example: raises(TypeError)("0()") == true.
+   */
+  global.raisesException = function raisesException(exception) {
+    return function (code) {
+      try {
+	eval(code);
+	return false;
+      } catch (actual) {
+	return actual instanceof exception;
+      }
+    };
+  };
+
+  /*
+   * Return true if A is equal to B, where equality on arrays and objects
+   * means that they have the same set of enumerable properties, the values
+   * of each property are deep_equal, and their 'length' properties are
+   * equal. Equality on other types is ==.
+   */
+    global.deepEqual = function deepEqual(a, b) {
+    if (typeof a != typeof b)
+      return false;
+
+    if (typeof a == 'object') {
+      var props = {};
+      // For every property of a, does b have that property with an equal value?
+      for (var prop in a) {
+        if (!deepEqual(a[prop], b[prop]))
+          return false;
+        props[prop] = true;
+      }
+      // Are all of b's properties present on a?
+      for (var prop in b)
+        if (!props[prop])
+          return false;
+      // length isn't enumerable, but we want to check it, too.
+      return a.length == b.length;
+    }
+
+    if (a === b) {
+      // Distinguish 0 from -0, even though they are ===.
+      return a !== 0 || 1/a === 1/b;
+    }
+
+    // Treat NaNs as equal, even though NaN !== NaN.
+    // NaNs are the only non-reflexive values, i.e., if a !== a, then a is a NaN.
+    // isNaN is broken: it converts its argument to number, so isNaN("foo") => true
+    return a !== a && b !== b;
+  }
+
+  /** Make an iterator with a return method. */
+  global.makeIterator = function makeIterator(overrides) {
+    var throwMethod;
+    if (overrides && overrides.throw)
+      throwMethod = overrides.throw;
+    var iterator = {
+      throw: throwMethod,
+      next: function(x) {
+        if (overrides && overrides.next)
+          return overrides.next(x);
+        return { done: false };
+      },
+      return: function(x) {
+        if (overrides && overrides.ret)
+          return overrides.ret(x);
+        return { done: true };
+      }
+    };
+
+    return function() { return iterator; };
+  };
+
+  /** Yield every permutation of the elements in some array. */
+  global.Permutations = function* Permutations(items) {
+    if (items.length == 0) {
+      yield [];
+    } else {
+      items = items.slice(0);
+      for (let i = 0; i < items.length; i++) {
+        let swap = items[0];
+        items[0] = items[i];
+        items[i] = swap;
+        for (let e of Permutations(items.slice(1, items.length)))
+          yield [items[0]].concat(e);
+      }
+    }
+  };
+
+  if (typeof global.assertThrowsValue === 'undefined') {
+    global.assertThrowsValue = function assertThrowsValue(f, val, msg) {
+      var fullmsg;
+      try {
+        f();
+      } catch (exc) {
+        if ((exc === val) === (val === val) && (val !== 0 || 1 / exc === 1 / val))
+          return;
+        fullmsg = "Assertion failed: expected exception " + val + ", got " + exc;
+      }
+      if (fullmsg === undefined)
+        fullmsg = "Assertion failed: expected exception " + val + ", no exception thrown";
+      if (msg !== undefined)
+        fullmsg += " - " + msg;
+      throw new Error(fullmsg);
+    };
+  }
+
+  if (typeof global.assertThrowsInstanceOf === 'undefined') {
+    global.assertThrowsInstanceOf = function assertThrowsInstanceOf(f, ctor, msg) {
+      var fullmsg;
+      try {
+        f();
+      } catch (exc) {
+        if (exc instanceof ctor)
+          return;
+        fullmsg = `Assertion failed: expected exception ${ctor.name}, got ${exc}`;
+      }
+
+      if (fullmsg === undefined)
+        fullmsg = `Assertion failed: expected exception ${ctor.name}, no exception thrown`;
+      if (msg !== undefined)
+        fullmsg += " - " + msg;
+
+      throw new Error(fullmsg);
+    };
+  }
+
+  global.assertDeepEq = (function(){
+    var call = Function.prototype.call,
+      Array_isArray = Array.isArray,
+      Array_includes = call.bind(Array.prototype.includes),
+      Map_ = Map,
+      Error_ = Error,
+      Symbol_ = Symbol,
+      Symbol_keyFor = Symbol.keyFor,
+      Symbol_description = call.bind(Object.getOwnPropertyDescriptor(Symbol.prototype, "description").get),
+      Map_has = call.bind(Map.prototype.has),
+      Map_get = call.bind(Map.prototype.get),
+      Map_set = call.bind(Map.prototype.set),
+      Object_toString = call.bind(Object.prototype.toString),
+      Function_toString = call.bind(Function.prototype.toString),
+      Object_getPrototypeOf = Object.getPrototypeOf,
+      Object_hasOwnProperty = call.bind(Object.prototype.hasOwnProperty),
+      Object_getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor,
+      Object_isExtensible = Object.isExtensible,
+      Object_getOwnPropertyNames = Object.getOwnPropertyNames;
+
+    // Return true iff ES6 Type(v) isn't Object.
+    // Note that `typeof document.all === "undefined"`.
+    function isPrimitive(v) {
+      return (v === null ||
+          v === undefined ||
+          typeof v === "boolean" ||
+          typeof v === "number" ||
+          typeof v === "string" ||
+          typeof v === "symbol");
+    }
+
+    function assertSameValue(a, b, msg) {
+      try {
+        assertEq(a, b);
+      } catch (exc) {
+        throw Error_(exc.message + (msg ? " " + msg : ""));
+      }
+    }
+
+    function assertSameClass(a, b, msg) {
+      var ac = Object_toString(a), bc = Object_toString(b);
+      assertSameValue(ac, bc, msg);
+      switch (ac) {
+      case "[object Function]":
+        if (typeof isProxy !== "undefined" && !isProxy(a) && !isProxy(b))
+          assertSameValue(Function_toString(a), Function_toString(b), msg);
+      }
+    }
+
+    function at(prevmsg, segment) {
+      return prevmsg ? prevmsg + segment : "at _" + segment;
+    }
+
+    // Assert that the arguments a and b are thoroughly structurally equivalent.
+    //
+    // For the sake of speed, we cut a corner:
+    //    var x = {}, y = {}, ax = [x];
+    //    assertDeepEq([ax, x], [ax, y]);  // passes (?!)
+    //
+    // Technically this should fail, since the two object graphs are different.
+    // (The graph of [ax, y] contains one more object than the graph of [ax, x].)
+    //
+    // To get technically correct behavior, pass {strictEquivalence: true}.
+    // This is slower because we have to walk the entire graph, and Object.prototype
+    // is big.
+    //
+    return function assertDeepEq(a, b, options) {
+      var strictEquivalence = options ? options.strictEquivalence : false;
+
+      function assertSameProto(a, b, msg) {
+        check(Object_getPrototypeOf(a), Object_getPrototypeOf(b), at(msg, ".__proto__"));
+      }
+
+      function failPropList(na, nb, msg) {
+        throw Error_("got own properties " + JSON.stringify(na) + ", expected " + JSON.stringify(nb) +
+               (msg ? " " + msg : ""));
+      }
+
+      function assertSameProps(a, b, msg) {
+        var na = Object_getOwnPropertyNames(a),
+          nb = Object_getOwnPropertyNames(b);
+        if (na.length !== nb.length)
+          failPropList(na, nb, msg);
+
+        // Ignore differences in whether Array elements are stored densely.
+        if (Array_isArray(a)) {
+          na.sort();
+          nb.sort();
+        }
+
+        for (var i = 0; i < na.length; i++) {
+          var name = na[i];
+          if (name !== nb[i])
+            failPropList(na, nb, msg);
+          var da = Object_getOwnPropertyDescriptor(a, name),
+            db = Object_getOwnPropertyDescriptor(b, name);
+          var pmsg = at(msg, /^[_$A-Za-z0-9]+$/.test(name)
+                     ? /0|[1-9][0-9]*/.test(name) ? "[" + name + "]" : "." + name
+                     : "[" + JSON.stringify(name) + "]");
+          assertSameValue(da.configurable, db.configurable, at(pmsg, ".[[Configurable]]"));
+          assertSameValue(da.enumerable, db.enumerable, at(pmsg, ".[[Enumerable]]"));
+          if (Object_hasOwnProperty(da, "value")) {
+            if (!Object_hasOwnProperty(db, "value"))
+              throw Error_("got data property, expected accessor property" + pmsg);
+            check(da.value, db.value, pmsg);
+          } else {
+            if (Object_hasOwnProperty(db, "value"))
+              throw Error_("got accessor property, expected data property" + pmsg);
+            check(da.get, db.get, at(pmsg, ".[[Get]]"));
+            check(da.set, db.set, at(pmsg, ".[[Set]]"));
+          }
+        }
+      };
+
+      const wellKnownSymbols = Reflect.ownKeys(Symbol)
+                                      .map(key => Symbol[key])
+                                      .filter(value => typeof value === "symbol");
+
+      // The standard doesn't offer a convenient way to distinguish well-known
+      // symbols from user-created symbols.
+      function isSimilarSymbol(a, b) {
+        // Fast path for same symbols.
+        if (a === b) {
+          return true;
+        }
+
+        // 1. Symbol descriptions must match.
+        // 2. Either both symbols are in the registry or none is.
+        // 3. Neither symbol must be a well-known symbol, because those are
+        //    already handled through the fast path.
+        return Symbol_description(a) === Symbol_description(b) &&
+               Symbol_keyFor(a) === Symbol_keyFor(b) &&
+               !Array_includes(wellKnownSymbols, a) &&
+               !Array_includes(wellKnownSymbols, b);
+      }
+
+      var ab = new Map_();
+      var bpath = new Map_();
+
+      function check(a, b, path) {
+        if (typeof a === "symbol") {
+          // Symbols are primitives, but they have identity.
+          // Symbol("x") !== Symbol("x") but
+          // assertDeepEq(Symbol("x"), Symbol("x")) should pass.
+          if (typeof b !== "symbol") {
+            throw Error_("got " + String(a) + ", expected " + String(b) + " " + path);
+          } else if (!isSimilarSymbol(a, b)) {
+            throw Error_("got " + String(a) + ", expected " + String(b) + " " + path);
+          } else if (Map_has(ab, a)) {
+            assertSameValue(Map_get(ab, a), b, path);
+          } else if (Map_has(bpath, b)) {
+            var bPrevPath = Map_get(bpath, b) || "_";
+            throw Error_("got distinct symbols " + at(path, "") + " and " +
+                   at(bPrevPath, "") + ", expected the same symbol both places");
+          } else {
+            Map_set(ab, a, b);
+            Map_set(bpath, b, path);
+          }
+        } else if (isPrimitive(a)) {
+          assertSameValue(a, b, path);
+        } else if (isPrimitive(b)) {
+          throw Error_("got " + Object_toString(a) + ", expected " + String(b) + " " + path);
+        } else if (Map_has(ab, a)) {
+          assertSameValue(Map_get(ab, a), b, path);
+        } else if (Map_has(bpath, b)) {
+          var bPrevPath = Map_get(bpath, b) || "_";
+          throw Error_("got distinct objects " + at(path, "") + " and " + at(bPrevPath, "") +
+                 ", expected the same object both places");
+        } else {
+          Map_set(ab, a, b);
+          Map_set(bpath, b, path);
+          if (a !== b || strictEquivalence) {
+            assertSameClass(a, b, path);
+            assertSameProto(a, b, path);
+            assertSameProps(a, b, path);
+            assertSameValue(Object_isExtensible(a),
+                    Object_isExtensible(b),
+                    at(path, ".[[Extensible]]"));
+          }
+        }
+      }
+
+      check(a, b, "");
+    };
+  })();
+
+})(this);