Test to ensure .call on native functions work correctly when passed

test/mjsunit/function-call.js

+// Copyright 2011 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.
+
+
+var should_throw_on_null_and_undefined =
+    [Object.prototype.toLocaleString,
+     Object.prototype.valueOf,
+     Object.prototype.hasOwnProperty,
+     Object.prototype.isPrototypeOf,
+     Object.prototype.propertyIsEnumerable,
+     Array.prototype.toString,
+     Array.prototype.toLocaleString,
+     Array.prototype.concat,
+     Array.prototype.join,
+     Array.prototype.pop,
+     Array.prototype.push,
+     Array.prototype.reverse,
+     Array.prototype.shift,
+     Array.prototype.slice,
+     Array.prototype.sort,
+     Array.prototype.splice,
+     Array.prototype.unshift,
+     Array.prototype.indexOf,
+     Array.prototype.lastIndexOf,
+     Array.prototype.every,
+     Array.prototype.some,
+     Array.prototype.forEach,
+     Array.prototype.map,
+     Array.prototype.filter,
+     Array.prototype.reduce,
+     Array.prototype.reduceRight,
+     String.prototype.charAt,
+     String.prototype.charCodeAt,
+     String.prototype.concat,
+     String.prototype.indexOf,
+     String.prototype.lastIndexOf,
+     String.prototype.localeCompare,
+     String.prototype.match,
+     String.prototype.replace,
+     String.prototype.search,
+     String.prototype.slice,
+     String.prototype.split,
+     String.prototype.substring,
+     String.prototype.toLowerCase,
+     String.prototype.toLocaleLowerCase,
+     String.prototype.toUpperCase,
+     String.prototype.toLocaleUpperCase,
+     String.prototype.trim,
+     Number.prototype.toLocaleString,
+     Error.prototype.toString];
+
+// Non generic natives does not work on any input other than the specific
+// type, but since this change will allow call to be invoked with undefined
+// or null as this we still explicitly test that we throw on these here.
+var non_generic =
+    [Function.prototype.toString,
+     String.prototype.toString,
+     String.prototype.valueOf,
+     Boolean.prototype.toString,
+     Boolean.prototype.valueOf,
+     Number.prototype.toString,
+     Number.prototype.valueOf,
+     Number.prototype.toFixed,
+     Number.prototype.toExponential,
+     Number.prototype.toPrecision,
+     Date.prototype.toString,
+     Date.prototype.toDateString,
+     Date.prototype.toTimeString,
+     Date.prototype.toLocaleString,
+     Date.prototype.toLocaleDateString,
+     Date.prototype.toLocaleTimeString,
+     Date.prototype.valueOf,
+     Date.prototype.getTime,
+     Date.prototype.getFullYear,
+     Date.prototype.getUTCFullYear,
+     Date.prototype.getMonth,
+     Date.prototype.getUTCMonth,
+     Date.prototype.getDate,
+     Date.prototype.getUTCDate,
+     Date.prototype.getDay,
+     Date.prototype.getUTCDay,
+     Date.prototype.getHours,
+     Date.prototype.getUTCHours,
+     Date.prototype.getMinutes,
+     Date.prototype.getUTCMinutes,
+     Date.prototype.getSeconds,
+     Date.prototype.getUTCSeconds,
+     Date.prototype.getMilliseconds,
+     Date.prototype.getUTCMilliseconds,
+     Date.prototype.getTimezoneOffset,
+     Date.prototype.setTime,
+     Date.prototype.setMilliseconds,
+     Date.prototype.setUTCMilliseconds,
+     Date.prototype.setSeconds,
+     Date.prototype.setUTCSeconds,
+     Date.prototype.setMinutes,
+     Date.prototype.setUTCMinutes,
+     Date.prototype.setHours,
+     Date.prototype.setUTCHours,
+     Date.prototype.setDate,
+     Date.prototype.setUTCDate,
+     Date.prototype.setMonth,
+     Date.prototype.setUTCMonth,
+     Date.prototype.setFullYear,
+     Date.prototype.setUTCFullYear,
+     Date.prototype.toUTCString,
+     Date.prototype.toISOString,
+     Date.prototype.toJSON,
+     RegExp.prototype.exec,
+     RegExp.prototype.test,
+     RegExp.prototype.toString];
+
+
+// Mapping functions.
+var mapping_functions =
+    [Array.prototype.every,
+     Array.prototype.some,
+     Array.prototype.forEach,
+     Array.prototype.map,
+     Array.prototype.filter];
+
+// Reduce functions.
+var reducing_functions =
+    [Array.prototype.reduce,
+     Array.prototype.reduceRight];
+
+// Test that all natives using the ToObject call throws the right exception.
+for (var i = 0; i < should_throw_on_null_and_undefined.length; i++) {
+  // Sanity check that all functions are correct
+  assertEquals(typeof(should_throw_on_null_and_undefined[i]), "function");
+
+  try {
+    should_throw_on_null_and_undefined[i].call(null);
+    assertUnreachable();
+  } catch (e) {
+    assertTrue(/called on non-object/.test(e));
+  }
+
+  try {
+    should_throw_on_null_and_undefined[i].call(undefined);
+    assertUnreachable();
+  } catch (e) {
+    assertTrue(/called on non-object/.test(e));
+  }
+
+  try {
+    should_throw_on_null_and_undefined[i].apply(null);
+    assertUnreachable();
+  } catch (e) {
+    assertTrue(/called on non-object/.test(e));
+  }
+
+  try {
+    should_throw_on_null_and_undefined[i].apply(undefined);
+    assertUnreachable();
+  } catch (e) {
+    assertTrue(/called on non-object/.test(e));
+  }
+}
+
+// Test that all natives that are non generic throws on null and undefined.
+for (var i = 0; i < non_generic.length; i++) {
+  // Sanity check that all functions are correct
+  assertEquals(typeof(non_generic[i]), "function");
+
+  try {
+    non_generic[i].call(null);
+    assertUnreachable();
+  } catch (e) { }
+
+  try {
+    non_generic[i].call(null);
+    assertUnreachable();
+  } catch (e) { }
+
+  try {
+    non_generic[i].apply(null);
+    assertUnreachable();
+  } catch (e) { }
+
+  try {
+    non_generic[i].apply(null);
+    assertUnreachable();
+  } catch (e) { }
+}
+
+
+// Test that we still throw when calling with thisArg null or undefined
+// through an array mapping function.
+var array = [1,2,3,4,5];
+for (var j = 0; j < mapping_functions.length; j++) {
+  for (var i = 0; i < should_throw_on_null_and_undefined.length; i++) {
+    try {
+      mapping_functions[j].call(array,
+                                should_throw_on_null_and_undefined[i],
+                                null);
+      assertUnreachable();
+    } catch (e) {
+      assertTrue(/called on non-object/.test(e));
+    }
+
+    try {
+      mapping_functions[j].call(array,
+                                should_throw_on_null_and_undefined[i],
+                                undefined);
+      assertUnreachable();
+    } catch (e) {
+      assertTrue(/called on non-object/.test(e));
+    }
+  }
+}
+
+for (var j = 0; j < mapping_functions.length; j++) {
+  for (var i = 0; i < non_generic.length; i++) {
+    try {
+      mapping_functions[j].call(array,
+                                non_generic[i],
+                                null);
+      assertUnreachable();
+    } catch (e) { }
+
+    try {
+      mapping_functions[j].call(array,
+                                non_generic[i],
+                                null);
+      assertUnreachable();
+    } catch (e) { }
+  }
+}
+
+
+// Reduce functions do a call with null as this argument.
+for (var j = 0; j < reduce_functions.length; j++) {
+  for (var i = 0; i < should_throw_on_null_and_undefined.length; i++) {
+    try {
+      reduce_functions[j].call(array,
+                               should_throw_on_null_and_undefined[i]);
+      assertUnreachable();
+    } catch (e) {
+      assertTrue(/called on non-object/.test(e));
+    }
+
+    try {
+      reduce_functions[j].call(array,
+                               should_throw_on_null_and_undefined[i]);
+      assertUnreachable();
+    } catch (e) {
+      assertTrue(/called on non-object/.test(e));
+    }
+  }
+}
+
+for (var j = 0; j < reduce_functions.length; j++) {
+  for (var i = 0; i < non_generic.length; i++) {
+    try {
+      reduce_functions[j].call(array,
+                                non_generic[i]);
+      assertUnreachable();
+    } catch (e) { }
+
+    try {
+      reduce_functions[j].call(array,
+                               non_generic[i]);
+      assertUnreachable();
+    } catch (e) { }
+  }
+}
+
+// Object.prototype.toString()
+assertEquals(Object.prototype.toString.call(null),
+             '[object Null]')
+
+assertEquals(Object.prototype.toString.call(undefined),
+             '[object Undefined]')