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v8 microbenchmarks for string iterators (https://codereview.chromium.org/2358263002)
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| // Copyright 2016 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. | |
| new BenchmarkSuite('StringIterators-Spread_OneByteShort', [1000], [ | |
| new Benchmark('test', false, false, 0, | |
| Spread_OneByteShort, Spread_OneByteShortSetup, | |
| Spread_OneByteShortTearDown), | |
| ]); | |
| var result; | |
| var string; | |
| function Spread_OneByteShortSetup() { | |
| result = undefined; | |
| string = "Alphabet"; | |
| string += "-"; | |
| string += "Soup"; | |
| } | |
| function Spread_OneByteShort() { | |
| result = [...string]; | |
| } | |
| function Spread_OneByteShortTearDown() { | |
| var expected = "A|l|p|h|a|b|e|t|-|S|o|u|p"; | |
| if (!Array.isArray(result) || result.join("|") !== expected) | |
| throw new Error("Test is broken"); | |
| return true; | |
| } | |
| // ---------------------------------------------------------------------------- | |
| new BenchmarkSuite('StringIterators-Spread_TwoByteShort', [1000], [ | |
| new Benchmark('test', false, false, 0, | |
| Spread_TwoByteShort, Spread_TwoByteShortSetup, | |
| Spread_TwoByteShortTearDown), | |
| ]); | |
| var result; | |
| var string; | |
| function Spread_TwoByteShortSetup() { | |
| result = undefined; | |
| string = "\u5FCD\u8005\u306E\u653B\u6483"; | |
| } | |
| function Spread_TwoByteShort() { | |
| result = [...string]; | |
| } | |
| function Spread_TwoByteShortTearDown() { | |
| var expected = "\u5FCD|\u8005|\u306E|\u653B|\u6483"; | |
| if (!Array.isArray(result) || result.join("|") !== expected) | |
| throw new Error("Test is broken"); | |
| return true; | |
| } | |
| // ---------------------------------------------------------------------------- | |
| new BenchmarkSuite('StringIterators-Spread_WithSurrogatePairsShort', [1000], [ | |
| new Benchmark('test', false, false, 0, | |
| Spread_WithSurrogatePairsShort, | |
| Spread_WithSurrogatePairsShortSetup, | |
| Spread_WithSurrogatePairsShortTearDown), | |
| ]); | |
| function Spread_WithSurrogatePairsShortSetup() { | |
| result = undefined; | |
| string = "\uD83C\uDF1F\u5FCD\u8005\u306E\u653B\u6483\uD83C\uDF1F"; | |
| } | |
| function Spread_WithSurrogatePairsShort() { | |
| result = [...string]; | |
| } | |
| function Spread_WithSurrogatePairsShortTearDown() { | |
| var expected = | |
| "\uD83C\uDF1F|\u5FCD|\u8005|\u306E|\u653B|\u6483|\uD83C\uDF1F"; | |
| if (!Array.isArray(result) || result.join("|") !== expected) | |
| throw new Error("Test is broken"); | |
| return true; | |
| } | |
| // ---------------------------------------------------------------------------- | |
| new BenchmarkSuite('StringIterators-ForOf_OneByteLong', [1000], [ | |
| new Benchmark('test', false, false, 0, | |
| ForOf_OneByteLong, ForOf_OneByteLongSetup, | |
| ForOf_OneByteLongTearDown), | |
| ]); | |
| var result; | |
| var string; | |
| function ForOf_OneByteLongSetup() { | |
| result = undefined; | |
| string = "Alphabet-Soup|".repeat(128); | |
| } | |
| function ForOf_OneByteLong() { | |
| result = ""; | |
| for (var c of string) result += c; | |
| } | |
| function ForOf_OneByteLongTearDown() { | |
| if (string != result) | |
| throw new Error(`Test is broken: Expected "${string}" but got ` + | |
| `"${result}"`); | |
| return true; | |
| } | |
| // ---------------------------------------------------------------------------- | |
| new BenchmarkSuite('StringIterators-ForOf_TwoByteLong', [1000], [ | |
| new Benchmark('test', false, false, 0, | |
| ForOf_OneByteLong, ForOf_OneByteLongSetup, | |
| ForOf_OneByteLongTearDown), | |
| ]); | |
| function ForOf_TwoByteLongSetup() { | |
| result = undefined; | |
| string = "\u5FCD\u8005\u306E\u653B\u6483".repeat(128); | |
| } | |
| function ForOf_TwoByteLong() { | |
| result = ""; | |
| for (var c of string) result += c; | |
| } | |
| function ForOf_TwoByteLongTearDown() { | |
| if (string != result) | |
| throw new Error(`Test is broken: Expected "${string}" but got ` + | |
| `"${result}"`); | |
| return true; | |
| } | |
| // ---------------------------------------------------------------------------- | |
| new BenchmarkSuite('StringIterators-ForOf_WithSurrogatePairsLong', [1000], [ | |
| new Benchmark('test', false, false, 0, | |
| ForOf_WithSurrogatePairsLong, ForOf_WithSurrogatePairsLongSetup, | |
| ForOf_WithSurrogatePairsLongTearDown), | |
| ]); | |
| var result; | |
| var string; | |
| function ForOf_WithSurrogatePairsLongSetup() { | |
| result = undefined; | |
| string = "\uD83C\uDF1F\u5FCD\u8005\u306E\u653B\u6483\uD83C\uDF1F|" | |
| .repeat(128); | |
| } | |
| function ForOf_WithSurrogatePairsLong() { | |
| result = ""; | |
| for (var c of string) result += c; | |
| } | |
| function ForOf_WithSurrogatePairsLongTearDown() { | |
| if (string !== result) | |
| throw new Error(`Test is broken: Expected "${string}" but got ` + | |
| `"${result}"`); | |
| return true; | |
| } |
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