179.txt

* 仕様書

[REFS[
- [30] [CITE@en[WebDriver]] ([TIME[2016-04-26 08:11:40 +09:00]] 版) <https://w3c.github.io/webdriver/webdriver-spec.html>
]REFS]

* WebDriver の実装

[35] [[サーバー]]側:
[FIG(short list)[
- [[Selenium]]
- [[ChromeDriver]]
- [[GeckoDriver]]
-- [[Marionette]]
]FIG]

[36] [[クライアント]]は、世間では  [[Selenium]] と[[言語]]依存の専用の[[クライアントライブラリー]]を使うことが多いですが、
[[WebDriver]] は単なる [[Web API]] なので、普通の [[HTTP]]
用[[ライブラリー]]があれば利用できます。

;; [37] しかし定型処理がわずらわしくなりますから、素の [[HTTP]] のまま操作するよりは、
ある程度[[抽象化]]された[[クライアントライブラリー]]は欲しいですね。

* 非互換性

[38] 色々な [[WebDriver]] の実装は、似て非なる[[プロトコル]]を使っています。

[39] [[Selenium]] のサーバーでは[[パス]]の先頭に [CODE[/wd/hub]] が付きます。
[[ChromeDriver]] や [[GeckoDriver]] では[[パス]]全体が [[WebDriver]]
仕様のものと解釈されます。

[40] [[WebDriver]] 仕様上は [[HTTP状態符号]]で正常かエラーかを表しますが、
[[ChromeDriver]] は基本的に [CODE[200]] を使います。
[[応答本体]]の [[JSON]] の [CODE[status]] が [N[0]] なら成功、
それ以外なら何らかのエラーです。
[CODE[value]] が [[JSONオブジェクト]]となり、その [CODE[message]]
に[[人間]]向けのエラーメッセージが入ります。
[TIME[2016-08-12T11:10:35.000Z]]

[43] [[WebDriver]] 仕様では[[スクリプト]]の実行は [CODE[/session/{session_id}/execute/sync]]
となっていますが、 [[ChromeDriver]] では [CODE[/session/{session_id}/execute]] です。

[42] [[ChromeDriver]] では [CODE[/status]] を [CODE[GET]] すると[[ビルド環境]]の情報が得られます。

[103] 各[[エンドポイント]]の項も参照。

* 用途

[FIG(list)[ [70] [[WebDriver]] を使った [[Webブラウザー]]操作の利用例
- [71] [[Webアプリケーション]]の[[テスト]]
- [75] [[Webブラウザー]]の[[テスト]]
- [72] [[スクレイピング]]
- [76] [[Webアプリケーション]]の定型操作
- [73] [[Webページ]]の[[スクリーンショット]]撮影
- [74] [[画像処理]]や [[3D]] や[[音声]]の汎用処理ツールとしての [[Webブラウザー]]の流用
]FIG]

* 歴史

[1] [CITE[JsonWireProtocol - selenium - A description of the protocol used by WebDriver to communicate with remote instances - Browser automation framework - Google Project Hosting]]
( ([TIME[2011-12-10 10:05:47 +09:00]] 版))
<http://code.google.com/p/selenium/wiki/JsonWireProtocol>

[33] [CITE[JsonWireProtocol - selenium - A description of the protocol used by WebDriver to communicate with remote instances - Browser automation framework - Google Project Hosting]] ([TIME[2016-08-07 23:39:48 +09:00]]) <https://web.archive.org/web/20160205035909/https://code.google.com/p/selenium/wiki/JsonWireProtocol>

[2] [CITE@en[WebDriver]]
( ([TIME[2012-07-09 22:55:39 +09:00]] 版))
<http://www.w3.org/TR/2012/WD-webdriver-20120710/>

[3] [CITE@en[WebDriver]]
( ([TIME[2013-01-16 16:15:31 +09:00]] 版))
<http://www.w3.org/TR/2013/WD-webdriver-20130117/>

[4] [CITE@en[WebDriver]]
( ([TIME[2013-03-07 22:44:44 +09:00]] 版))
<http://www.w3.org/TR/2013/WD-webdriver-20130312/>

[5] [CITE[JsonWireProtocol - selenium - A description of the protocol used by WebDriver to communicate with remote instances - Browser automation framework - Google Project Hosting]]
( ([TIME[2013-10-22 02:13:24 +09:00]] 版))
<https://code.google.com/p/selenium/wiki/JsonWireProtocol>

[6] [CITE[JsonWireProtocol - selenium - A description of the protocol used by WebDriver to communicate with remote instances - Browser automation framework - Google Project Hosting]]
( ([TIME[2014-10-30 06:27:12 +09:00]] 版))
<https://code.google.com/p/selenium/wiki/JsonWireProtocol#Capabilities_JSON_Object>

[7] [CITE@en[WebDriver]]
( ([TIME[2014-11-07 11:04:46 +09:00]] 版))
<https://dvcs.w3.org/hg/webdriver/raw-file/default/webdriver-spec.html>

[8] [CITE[Selenium WebDriver — Selenium Documentation]]
( ([TIME[2015-01-13 13:08:11 +09:00]] 版))
<http://docs.seleniumhq.org/docs/03_webdriver.jsp>

[9] [CITE@en[The Architecture of Open Source Applications: Selenium WebDriver]]
( ([TIME[2013-02-05 12:26:15 +09:00]] 版))
<http://www.aosabook.org/en/selenium.html>

[10] [CITE@en[WebDriver]]
([TIME[2015-08-03 16:17:27 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150803/>

[11] [CITE@en[WebDriver]]
([TIME[2015-08-04 08:21:14 +09:00]] 版)
<https://w3c.github.io/webdriver/webdriver-spec.html>

[12] [CITE@en[WebDriver]]
([TIME[2015-08-04 09:40:50 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150804/>

[13] [CITE@en[WebDriver]]
([TIME[2015-08-05 09:53:35 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150805/>

[14] [CITE@en[WebDriver]]
([TIME[2015-08-08 18:42:00 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150808/>

[15] [CITE[WebDriver now a living standard]]
([TIME[2015-08-05 00:12:26 +09:00]] 版)
<https://sny.no/2015/08/living>

[16] [CITE@en[WebDriver]]
([TIME[2015-08-28 06:56:57 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150827/>

[17] [CITE@en[WebDriver]]
([TIME[2015-09-02 19:16:24 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150902/>

[18] [CITE@en[WebDriver]]
([TIME[2015-09-09 21:28:34 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150909/>

[19] [CITE@en[WebDriver]]
([TIME[2015-09-15 23:41:36 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150915/>

[20] [CITE@en[WebDriver]]
([TIME[2015-09-18 19:01:06 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150918/>

[21] [CITE@en[WebDriver]]
([TIME[2015-09-21 19:57:39 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20150921/>

[22] [CITE@en[WebDriver]]
([TIME[2015-10-26 09:00:16 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20151025/>

[23] [CITE@en[WebDriver]]
([TIME[2015-10-28 14:55:19 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20151028/>

[24] [CITE@en[WebDriver]]
([TIME[2015-10-29 10:40:59 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20151029/>

[FIG(quote)[
[FIGCAPTION[
[25] [CITE@ja[Microsoft Edge 用 WebDriver (Windows)]]
([TIME[2015-11-07 22:14:26 +09:00]] 版)
<https://msdn.microsoft.com/ja-jp/library/mt188085(v=vs.85).aspx>
]FIGCAPTION]

> Microsoft Edge の WebDriver 実装では既存のテストとの下位互換のために、W3C WebDriver 実装と JSON Wire Protocol の両方をサポートします。

]FIG]


[26] [CITE@en-US[Bringing automated testing to Microsoft Edge through WebDriver | Microsoft Edge Dev Blog]]
([TIME[2015-11-07 22:11:03 +09:00]] 版)
<https://blogs.windows.com/msedgedev/2015/07/23/bringing-automated-testing-to-microsoft-edge-through-webdriver/>

[27] [CITE@en-US[Developer Resources : Microsoft Edge Dev]]
([TIME[2015-11-07 22:15:51 +09:00]] 版)
<https://dev.windows.com/en-us/microsoft-edge/platform/status/webdriver/details/>

[28] [CITE@en[WebDriver]]
([TIME[2015-11-09 21:41:50 +09:00]] 版)
<http://www.w3.org/TR/2015/WD-webdriver-20151109/>

[29] [CITE@en[WebDriver]]
([TIME[2016-01-20 09:39:43 +09:00]] 版)
<https://www.w3.org/TR/2016/WD-webdriver-20160120/>

[31] [CITE@en[WebDriver]]
([TIME[2016-04-27 01:21:39 +09:00]] 版)
<https://www.w3.org/TR/2016/WD-webdriver-20160426/>

[32] [CITE@en[WebDriver]]
( ([TIME[2016-05-23 21:42:38 +09:00]]))
<https://www.w3.org/TR/2016/WD-webdriver-20160523/>

[34] [CITE@en-US[WebDriver Status - Mozilla | MDN]]
( ([TIME[2016-08-04 17:24:28 +09:00]]))
<https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver/status>

[44] [CITE@en[WebDriver]]
([TIME[2016-08-30 23:27:25 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20160830/>

[45] [CITE[WebDriver Support in Safari 10 | WebKit]]
([TIME[2016-09-06 00:16:18 +09:00]])
<https://webkit.org/blog/6900/webdriver-support-in-safari-10/>

[46] [CITE@en[WebDriver]]
([TIME[2016-10-13 22:37:03 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161013/>

[47] [CITE@en[WebDriver]]
([TIME[2016-10-20 06:00:23 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161019/>

[48] [CITE@en[WebDriver]]
([TIME[2016-10-22 08:51:18 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161021/>

[49] [CITE@en[WebDriver]]
([TIME[2016-10-26 00:27:09 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161025/>

[50] [CITE@en[WebDriver]]
([TIME[2016-11-01 06:48:14 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161031/>

[51] [CITE@en[WebDriver]]
([TIME[2016-11-15 19:44:51 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161115/>

[52] [CITE@en[WebDriver]]
([TIME[2016-11-16 23:46:53 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161116/>

[53] [CITE@en[WebDriver]]
([TIME[2016-11-30 05:42:32 +09:00]])
<https://www.w3.org/TR/2016/WD-webdriver-20161129/>

[54] [CITE@en[WebDriver]]
([TIME[2017-01-05 23:45:24 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170105/>

[55] [CITE@en[WebDriver]]
([TIME[2017-01-11 00:28:23 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170110/>

[56] [CITE@en[WebDriver]]
([TIME[2017-01-12 01:39:38 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170111/>

[57] [CITE@en[WebDriver]]
([TIME[2017-01-12 23:39:44 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170112/>

[58] [CITE@en[WebDriver]]
([TIME[2017-01-13 19:37:18 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170113/>

[59] [CITE@en[WebDriver]]
([TIME[2017-01-17 05:10:11 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170116/>

[60] [CITE@en[WebDriver]]
([TIME[2017-01-18 07:58:54 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170117/>

[61] [CITE@en[WebDriver]]
([TIME[2017-01-19 05:54:35 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170118/>

[62] [CITE@en[WebDriver]]
([TIME[2017-01-20 07:35:46 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170119/>

[63] [CITE@en[WebDriver]]
([TIME[2017-01-21 07:23:59 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170120/>

[64] [CITE@en[WebDriver]]
([TIME[2017-01-21 20:01:26 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170121/>

[65] [CITE@en[WebDriver]]
([TIME[2017-01-24 00:52:41 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170123/>

[66] [CITE@en[WebDriver]]
([TIME[2017-01-25 03:16:26 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170124/>

[67] [CITE@en[WebDriver]]
([TIME[2017-01-25 22:19:39 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170125/>

[68] [CITE@en[WebDriver]]
([TIME[2017-01-26 18:17:50 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170126/>

[69] [CITE@en[WebDriver]]
([TIME[2017-01-28 02:57:57 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170127/>

[77] [CITE@en[WebDriver]]
([TIME[2017-02-01 06:34:38 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170131/>

[78] [CITE@en[WebDriver]]
([TIME[2017-02-01 21:39:55 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170201/>

[79] [CITE@en[WebDriver]]
([TIME[2017-02-03 02:38:22 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170202/>

[80] [CITE@en[WebDriver]]
([TIME[2017-02-04 07:17:53 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170203/>

[81] [CITE@en[WebDriver]]
([TIME[2017-02-07 05:59:53 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170206/>

[82] [CITE@en[WebDriver]]
([TIME[2017-02-07 22:27:06 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170207/>

[83] [CITE@en[WebDriver]]
([TIME[2017-02-10 07:23:29 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170209/>

[84] [CITE@en[WebDriver]]
([TIME[2017-02-11 01:03:00 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170210/>

[85] [CITE@en[WebDriver]]
([TIME[2017-02-14 06:43:06 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170213/>

[86] [CITE@en[WebDriver]]
([TIME[2017-02-15 05:22:14 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170214/>

[87] [CITE@en[WebDriver]]
([TIME[2017-02-15 21:04:04 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170215/>

[88] [CITE@en[WebDriver]]
([TIME[2017-02-17 22:47:44 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170217/>

[89] [CITE@en[WebDriver]]
([TIME[2017-02-19 02:10:37 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170218/>

[90] [CITE@en[WebDriver]]
([TIME[2017-02-20 01:00:44 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170219/>

[91] [CITE@en[WebDriver]]
([TIME[2017-02-20 23:52:02 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170220/>

[92] [CITE@en[WebDriver]]
([TIME[2017-02-22 02:15:14 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170221/>

[93] [CITE@en[Toggle spec to CR status]]
([[sideshowbarker]]著, [TIME[2017-02-21 14:26:38 +09:00]])
<https://github.com/w3c/webdriver/commit/6273b09685132df5715ba707d2d57e53bf508ac6>

[94] [CITE@en[WebDriver]]
([TIME[2017-02-23 01:08:03 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170222/>

[95] [CITE@en[WebDriver]]
([TIME[2017-02-23 23:37:59 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170223/>

[96] [CITE@en[WebDriver]]
([TIME[2017-02-25 07:42:23 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170224/>

[97] [CITE@en[WebDriver]]
([TIME[2017-02-28 22:13:28 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170228/>

[98] [CITE@en[WebDriver]]
([TIME[2017-03-01 21:46:19 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170301/>

[99] [CITE@en[WebDriver]]
([TIME[2017-03-02 17:58:50 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170302/>

[100] [CITE@en[WebDriver]]
([TIME[2017-03-06 20:21:38 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170306/>

[101] [CITE@en[WebDriver]]
([TIME[2017-03-07 19:07:50 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170307/>

[102] [CITE@en[WebDriver]]
([TIME[2017-03-09 00:20:18 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170308/>

[41] [CITE@en[Transition Request: WebDriver to Candidate Recommendation]]
([[Michael'''['''tm''']''' Smith]]著, [TIME[2017-03-09 20:47:40 +09:00]])
<https://lists.w3.org/Archives/Public/www-archive/2017Mar/0000.html>

[104] [CITE@en[WebDriver]]
([TIME[2017-03-12 16:32:29 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170312/>

[105] [CITE@en[WebDriver]]
([TIME[2017-03-16 21:27:42 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170316/>

[106] [CITE@en[WebDriver]]
([TIME[2017-03-21 05:26:59 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170320/>

[107] [CITE@en[WebDriver]]
([TIME[2017-03-23 01:58:09 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170322/>

[108] [CITE@en[WebDriver]]
([TIME[2017-03-25 02:21:55 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170324/>

[109] [CITE@en[WebDriver]]
([TIME[2017-03-29 23:17:52 +09:00]])
<https://www.w3.org/TR/2017/WD-webdriver-20170329/>

[110] [CITE@en[WebDriver]]
([TIME[2017-03-30 17:16:33 +09:00]])
<https://www.w3.org/TR/2017/CR-webdriver-20170330/>

[111] [CITE@ja[WebDriver について私が知っていること (2017 年版) - ひだまりソケットは壊れない]]
([TIME[2017-05-09 11:08:20 +09:00]])
<http://vividcode.hatenablog.com/entry/web-driver-introduction-2017>

[112] [CITE@en[webdriverio/webdriverio: A Node.js bindings implementation for the W3C WebDriver protocol]]
([TIME[2017-05-09 23:42:12 +09:00]])
<https://github.com/webdriverio/webdriverio>

[113] [CITE@ja[WebDriver によるスクリプト実行の現状 (geckodriver と ChromeDriver) - ひだまりソケットは壊れない]]
([TIME[2017-05-11 12:29:12 +09:00]])
<http://vividcode.hatenablog.com/entry/web-driver/how-to-execute-script>

[114] [CITE@en[interface: mark navigator.webdriver as unforgeable]]
([[andreastt]]著, [TIME[2017-05-13 08:36:13 +09:00]])
<https://github.com/w3c/webdriver/commit/b50038af851ca2d11edfe0a70f568332f50d0ac4>

[115] [CITE@en[Rephrase description of navigator.webdriver]]
([[shekyan]]著, [TIME[2017-05-19 08:50:02 +09:00]])
<https://github.com/w3c/webdriver/commit/48e8c855facbcbc8682d734c0922ce69d71ce248>

[116] [CITE@en[disable auto publish since the spec is now CR]]
([[deniak]]著, [TIME[2017-06-06 22:17:09 +09:00]])
<https://github.com/w3c/webdriver/commit/0d62ec62c2c18502cd7ebd20452a0d0a7fc90508>

[117] [CITE@en[Changes around navigator.webdriver]]
([[shekyan]]著, [TIME[2017-06-09 14:43:07 +09:00]])
<https://github.com/w3c/webdriver/commit/96a38f2415aa59bbe370aaafb451b01b0dccfe39>

[118] [CITE@en[Changes around navigator.webdriver by shekyan · Pull Request #948 · w3c/webdriver]]
([TIME[2017-07-08 13:49:21 +09:00]])
<https://github.com/w3c/webdriver/pull/948>

[119] [CITE@en[Remove obsolete W3C bug tracker link.]]
([[joshbruning]]著, [TIME[2017-07-13 06:47:04 +09:00]])
<https://github.com/w3c/webdriver/commit/95929cd3e87eb25c5ff53bb7aea4a840d30df4f2>

[120] [CITE@en[Remove obsolete W3C bug tracker link. by joshbruning · Pull Request #978 · w3c/webdriver]]
([TIME[2017-07-20 19:50:36 +09:00]])
<https://github.com/w3c/webdriver/pull/978>

[121] [CITE@en[Structuring WebDriver callback code]]
([[Geoffrey Sneddon]]著, [TIME[2017-07-20 19:09:34 +09:00]])
<https://lists.w3.org/Archives/Public/www-archive/2017Jul/0001.html>

[122] [CITE@en[Transition Request: WebDriver to Proposed Recommendation]]
([[Michael'''['''tm''']''' Smith]]著, [TIME[2017-09-08 22:22:11 +09:00]])
<https://lists.w3.org/Archives/Public/www-archive/2017Sep/0000.html>

[123] 
ページ遷移が終わって読み込みが終わったら~~~みたいな条件でテストを書くのが難しい。ただでさえ面倒くさいのに、ブラウザーごとに微妙に WebDriver の動作が違ったり、(たぶん)たまたまのタイミングの問題でうまくいったりいかなかったりするのでますます難しい。普通に思った通りに書いても基本的に動かない。。。

そして本当に書きたいことを書くのがまた難しい。ここをクリックしたあとに画面にこの要素がいい感じに見えていたらOK、みたいなのはたぶん書こうと思えば書けるんだけど簡単には書けない。そういうテストを書いてこそ意味がある気がするが難しい。

WebDriver API の上に便利APIをいっぱい作らないとつらそうだ・・・。
[TIME[2014-11-05]]

[124] しかもそういうのって開発の途中やリニューアル的なタイミングで[[要素]]の構造や表示位置が変わったりするので、
それを想定して壊れなそうに書く必要があって、それがまたむずいのよね。

[125] [CITE@en[ios-driver documentation]]
([[François Reynaud]]著, [TIME[2015-02-08 09:55:49 +09:00]])
<https://ios-driver.github.io/ios-driver/?page=home>

[126] [CITE[WebDriver Support in Safari 10 | WebKit]]
([TIME[2017-12-01 20:23:49 +09:00]])
<https://webkit.org/blog/6900/webdriver-support-in-safari-10/>

[127] [CITE[Appium: モバイルアプリのテスト自動化はすごいことになった]]
([TIME[2017-08-23 05:55:37 +09:00]])
<http://appium.io/>

[128] [CITE@en[Generalize protocol extension mechanism (#1177)]]
([[jugglinmike]]著, [TIME[2018-01-06 19:28:51 +09:00]])
<https://github.com/w3c/webdriver/commit/971ab897921b3a84ce5c426fefca5c9b3d2ebff2>

[129] [CITE@en[Improve wording around extension commands · Issue #1142 · w3c/webdriver]]
([TIME[2018-01-07 13:50:02 +09:00]])
<https://github.com/w3c/webdriver/issues/1142>

[130] [CITE@en[Generalize protocol extension mechanism by jugglinmike · Pull Request #1177 · w3c/webdriver]]
([TIME[2018-01-07 13:50:11 +09:00]])
<https://github.com/w3c/webdriver/pull/1177>

[131] [CITE@en[interface: expose navigator.webdriver unconditionally]]
([[andreastt]]著, [TIME[2018-02-03 04:56:37 +09:00]])
<https://github.com/w3c/webdriver/commit/a224627dcea6448367523bf0420de3d547946300>

[132] [CITE@en[Expose navigator.webdriver regardless of whether we're running under automation or not · Issue #1214 · w3c/webdriver]]
([TIME[2018-02-04 16:04:59 +09:00]])
<https://github.com/w3c/webdriver/issues/1214>

[133] [CITE@en[interface: expose navigator.webdriver unconditionally by andreastt · Pull Request #1219 · w3c/webdriver]]
([TIME[2018-02-04 16:06:06 +09:00]])
<https://github.com/w3c/webdriver/pull/1219>