| <!doctype html> |
| <title>Array.prototype.join</title> |
| <link rel=author href=mailto:Ms2ger@gmail.com title=Ms2ger> |
| <link rel=help href=http://es5.github.com/#x15.4.4.5> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| |
| <div id=log></div> |
| <script> |
| var test_error = { name: "test" }; |
| |
| // Step 1. |
| test(function() { |
| assert_throws(new TypeError(), function() { |
| [].join.call(null, { |
| toString: function() { assert_unreached(); } |
| }); |
| }); |
| assert_throws(new TypeError(), function() { |
| [].join.call(undefined, { |
| toString: function() { assert_unreached(); } |
| }); |
| }); |
| }, "Array.prototype.join must call ToObject before looking at the separator argument.") |
| |
| var generateTest = function(throwing_getter, getter_name) { |
| var throwing_object = {}; |
| var interfaces = [Boolean, Number]; |
| |
| var objects = interfaces.map(function(p) { return p.prototype; }); |
| objects.push(throwing_object); |
| objects.forEach(function(object) { |
| Object.defineProperty(object, "length", { |
| get: throwing_getter, |
| configurable: true |
| }); |
| }); |
| |
| [throwing_object, true, false, 0, 1, Math.PI].forEach(function(that) { |
| test(function() { |
| assert_throws(test_error, function() { |
| [].join.call(that, ","); |
| }); |
| }, "Array.prototype.join must forward the exception from the this " + |
| "object's length property with this=" + format_value(that) + " and " + |
| "getter " + getter_name + ".") |
| test(function() { |
| assert_throws(test_error, function() { |
| [].join.call(that, { |
| toString: function() { assert_unreached(); } |
| }); |
| }); |
| }, "Array.prototype.join must get the this object's length property " + |
| "before looking at the separator argument with this=" + |
| format_value(that) + " and getter " + getter_name + ".") |
| }); |
| interfaces.forEach(function(iface) { |
| delete iface.length; |
| }); |
| } |
| |
| // Step 2. |
| test(function() { |
| generateTest(function() { throw test_error; }, "function"); |
| }, "Step 2."); |
| |
| // Step 3. |
| test(function() { |
| generateTest(function() { |
| return { |
| valueOf: function() { throw test_error; } |
| }; |
| }, "valueOf"); |
| generateTest(function() { |
| return { |
| toString: function() { throw test_error; } |
| }; |
| }, "toString"); |
| generateTest(function() { |
| return { |
| valueOf: function() { throw test_error; }, |
| toString: function() { assert_unreached("toString should not be invoked if valueOf exists"); } |
| }; |
| }, "valueOf and toString"); |
| }, "Step 3."); |
| </script> |
