// XXX: these should be shared utils for Array testing function dumpValue(v) { var i, n, n_clipped; var res = ''; if (v === undefined) { return 'undefined'; } else if (v === null) { return 'null'; } n = v.length; res = (typeof v) + ' ' + (typeof n) + ' ' + n; if (typeof n === 'undefined') { return res; } // clip dump length (n may be > 2**32) n = Math.floor(n); n_clipped = Math.min(n, 200); tmp = []; for (i = 0; i < n_clipped; i++) { if (!v.hasOwnProperty(i)) { tmp.push('nonexistent'); } else { x = v[i]; tmp.push(typeof x + ':' + x); } } res = res + (tmp.length > 0 ? ' ' + tmp.join(',') : '') + (n > n_clipped ? ',...' : ''); return res; } function test(this_value, loop_count) { var t; var pre, post, res; if (loop_count === undefined) { loop_count = 1; } while (loop_count-- > 0) { pre = dumpValue(this_value); try { t = Array.prototype.pop.call(this_value); res = typeof t + " " + t; } catch (e) { res = e.name; } post = dumpValue(this_value); print(pre, '-->', res, '-->', post); } } /*=== basic object number 3 number:1,number:2,number:3 --> number 3 --> object number 2 number:1,number:2 object number 2 number:1,number:2 --> number 2 --> object number 1 number:1 object number 1 number:1 --> number 1 --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 4 number:1,nonexistent,nonexistent,number:2 --> number 2 --> object number 3 number:1,nonexistent,nonexistent object number 3 number:1,nonexistent,nonexistent --> undefined undefined --> object number 2 number:1,nonexistent object number 2 number:1,nonexistent --> undefined undefined --> object number 1 number:1 object number 1 number:1 --> number 1 --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 11 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent,nonexistent,nonexistent,number:3 --> number 3 --> object number 10 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent,nonexistent,nonexistent object number 10 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 9 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent,nonexistent object number 9 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 8 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent object number 8 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent,nonexistent --> undefined undefined --> object number 7 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent object number 7 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2,nonexistent --> undefined undefined --> object number 6 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2 object number 6 number:1,nonexistent,nonexistent,nonexistent,nonexistent,number:2 --> number 2 --> object number 5 number:1,nonexistent,nonexistent,nonexistent,nonexistent object number 5 number:1,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 4 number:1,nonexistent,nonexistent,nonexistent object number 4 number:1,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 3 number:1,nonexistent,nonexistent object number 3 number:1,nonexistent,nonexistent --> undefined undefined --> object number 2 number:1,nonexistent object number 2 number:1,nonexistent --> undefined undefined --> object number 1 number:1 object number 1 number:1 --> number 1 --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 3 number:1,string:2-undel,number:3 --> number 3 --> object number 2 number:1,string:2-undel object number 2 number:1,string:2-undel --> TypeError --> object number 2 number:1,string:2-undel object number 2 number:1,string:2-undel --> TypeError --> object number 2 number:1,string:2-undel object number 2 number:1,string:2-undel --> TypeError --> object number 2 number:1,string:2-undel object string 10 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 9 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent object number 9 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 8 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent object number 8 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 7 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent object number 7 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 6 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent object number 6 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 5 string:first,string:second,nonexistent,nonexistent,nonexistent object number 5 string:first,string:second,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 4 string:first,string:second,nonexistent,nonexistent object number 4 string:first,string:second,nonexistent,nonexistent --> undefined undefined --> object number 3 string:first,string:second,nonexistent object number 3 string:first,string:second,nonexistent --> undefined undefined --> object number 2 string:first,string:second object number 2 string:first,string:second --> string second --> object number 1 string:first object number 1 string:first --> string first --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 0 --> undefined undefined --> object number 0 ===*/ print('basic'); function basicTest() { var t; // dense array t = [1,2,3]; test(t, 5); t = [1,,,2]; test(t, 6); // sparse array t = [1]; t[100] = 'x'; // use this to get into 'sparse mode' but use smaller length to minimize output t.length = 1; t[10] = 3; t[5] = 2; test(t, 13); // non-deletable element t = [ 1, 2, 3 ]; Object.defineProperties(t, { '1': { value: '2-undel', writable: false, enumerable: true, configurable: false } }); test(t, 4); // trailing non-existent elements t = { '0': 'first', '1': 'second', length: '10' }; test(t, 12); } try { basicTest(); } catch (e) { print(e); } /*=== coercion undefined --> TypeError --> undefined null --> TypeError --> null boolean undefined undefined --> undefined undefined --> boolean undefined undefined boolean undefined undefined --> undefined undefined --> boolean undefined undefined number undefined undefined --> undefined undefined --> number undefined undefined string number 3 string:f,string:o,string:o --> TypeError --> string number 3 string:f,string:o,string:o string number 3 string:f,string:o,string:o --> TypeError --> string number 3 string:f,string:o,string:o string number 3 string:f,string:o,string:o --> TypeError --> string number 3 string:f,string:o,string:o string number 3 string:f,string:o,string:o --> TypeError --> string number 3 string:f,string:o,string:o object number 2 number:1,number:2 --> number 2 --> object number 1 number:1 object undefined undefined --> undefined undefined --> object number 0 object number 2 string:foo,string:bar --> string bar --> object number 1 string:foo object string 0.9 --> undefined undefined --> object number 0 object number 5 string:first,string:second,nonexistent,nonexistent,nonexistent --> undefined undefined --> object number 4 string:first,string:second,nonexistent,nonexistent object number 4 string:first,string:second,nonexistent,nonexistent --> undefined undefined --> object number 3 string:first,string:second,nonexistent object number 3 string:first,string:second,nonexistent --> undefined undefined --> object number 2 string:first,string:second object number 2 string:first,string:second --> string second --> object number 1 string:first object number 1 string:first --> string first --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 4294967301 string:first,string:second,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,nonexistent,... --> undefined undefined --> object number 4 string:first,string:second,nonexistent,nonexistent object number 4 string:first,string:second,nonexistent,nonexistent --> undefined undefined --> object number 3 string:first,string:second,nonexistent object number 3 string:first,string:second,nonexistent --> undefined undefined --> object number 2 string:first,string:second object number 2 string:first,string:second --> string second --> object number 1 string:first object number 1 string:first --> string first --> object number 0 object number 0 --> undefined undefined --> object number 0 object number 0 --> undefined undefined --> object number 0 length getter 3 1 getter length getter 3 length setter 2 length getter 2 1 getter object number 3 string:foo,string:bar,nonexistent --> undefined undefined --> object number 2 string:foo,string:bar length getter 2 1 getter length getter 2 1 getter length setter 1 length getter 1 object number 2 string:foo,string:bar --> string bar --> object number 1 string:foo length getter 1 length getter 1 length setter 0 length getter 0 object number 1 string:foo --> string foo --> object number 0 length getter 0 length getter 0 length setter 0 length getter 0 object number 0 --> undefined undefined --> object number 0 length getter 0 length getter 0 length setter 0 length getter 0 object number 0 --> undefined undefined --> object number 0 ===*/ print('coercion'); function coercionTest() { // this coercion test(undefined); test(null); test(true); test(false); test(123); test('foo', 4); // character are non-configurable test([1,2]); test({ foo: 1, bar: 2 }); test({ '0': 'foo', '1': 'bar', length: 2 }); // ToUint32('0.9') -> coerces to zero, return undefined, length will be written to number 0 t = { length: '0.9' }; test(t); // length goes through ToUint32(), so these should have no difference // (V8 3.7.12.22 seems to iterate through 4G elements here) t = { '0': 'first', '1': 'second', length: 5 }; test(t, 7); t = { '0': 'first', '1': 'second', length: 256*256*256*256 + 5 }; test(t, 7); // complex test with lots of side effect checks // note that pre/post printing confuses the output a bit t = Object.create(Object.prototype, { '0': { value: 'foo', writable: true, enumerable: true, configurable: true }, '1': { get: function() { print('1 getter'); return 'bar'; }, set: function() { print('1 setter'); }, enumerable: true, configurable: true }, 'length': { get: function() { print('length getter', this.mylen); return this.mylen; }, set: function(v) { print('length setter', v); this.mylen = v; }, enumerable: true, configurable: true } }); t.mylen = 3; test(t, 5); } try { coercionTest(); } catch (e) { print(e); } /*=== delete/put prevented object string 0 --> TypeError --> object string 0 object string 2 nonexistent,nonexistent --> TypeError --> object string 2 nonexistent,nonexistent string number 3 string:f,string:o,string:o --> TypeError --> string number 3 string:f,string:o,string:o object number 2 string:foo,string:bar --> TypeError --> object number 2 string:foo,string:bar object number 2 string:foo,string:bar --> TypeError --> object number 2 string:foo,string:bar object number 2 string:foo,string:bar --> TypeError --> object number 2 string:foo,string:bar object number 2 string:foo,string:bar --> TypeError --> object number 2 string:foo,string:bar object number 2 string:foo,string:bar --> TypeError --> object number 2 string:foo,string:bar object number 2 string:foo,string:bar --> TypeError --> object number 2 string:foo,string:bar ===*/ /* Attempt to [[Delete]] entries or [[Put]] to "length" have the "Throw" flag * set in both non-strict and strict mode. If attributes prevent deletion or * writing, a TypeError must result even in non-strict mode. */ print('delete/put prevented'); function deleteOrPutPreventedTest() { var t; // Length is zero and non-writable t = Object.create(Object.prototype, { 'length': { value: '0', writable: false, enumerable: true, configurable: true } }); test(t, 1); // Length is non-zero and non-writable t = Object.create(Object.prototype, { 'length': { value: '2', writable: false, enumerable: true, configurable: true } }); test(t, 1); // Characters are non-configurable, which causes [[Delete]] to fail test('foo', 1); // Same for this object; because the [[Put]] should fail with TypeError, // the (writable) length should not be updated t = Object.create(Object.prototype, { '0': { value: 'foo', writable: false, enumerable: true, configurable: false }, '1': { value: 'bar', writable: false, enumerable: true, configurable: false }, 'length': { value: 2, writable: true, enumerable: true, configurable: true } }); test(t, 3); // Length is not writable either but should have no effect, TypeError on attempt to [[Delete]] "1" t = Object.create(Object.prototype, { '0': { value: 'foo', writable: false, enumerable: true, configurable: false }, '1': { value: 'bar', writable: false, enumerable: true, configurable: false }, 'length': { value: 2, writable: false, enumerable: true, configurable: false } }); test(t, 3); } try { deleteOrPutPreventedTest(); } catch (e) { print(e); }