等待 set 方法的无效参数错误答案

【问题标题】：watir invalid argument error for set method等待 set 方法的无效参数错误
【发布时间】：2017-09-12 14:08:44
【问题描述】：

我正在使用 watir 和 ruby 编写一个页面对象模式 UI 框架。在我进行捆绑更新之前，这一切正常

我有一个 yml 文件代表这样的页面

username:
 field: text_field
 attribute: name
 value: username
 default:
 operations:
  - exists?
  - set

还有一个页面对象方法生成器，这个生成器

def generate(elements)
    elements.each do |element|
        element[1]['operations'].each do |operation|
            if operation.eql? 'set'
                default = element[1]['default']
                self.class.send(:define_method, "#{element[0]}_#{operation}") do |default=''|
                    @b.send(element[1]['field'], element[1]['attribute'].to_sym, element[1]['value']).send(operation, default)
                end
            else
                self.class.send(:define_method, "#{element[0]}_#{operation}") do
                    @b.send(element[1]['field'], element[1]['attribute'].to_sym, element[1]['value']).send(operation)
                end
            end
        end
    end
end

当我对 chrome 运行 watir 测试时，这似乎工作正常。但是，当我的浏览器是 firefox 时，我收到错误 Expected [object Undefined] undefined to be a string (Selenium::WebDriver::Error::InvalidArgumentError)

generate 方法中的第 6 行抛出该错误

这就是我将 yml 传递给 generate 方法的方式

def initialize(browser)
    file_path = File.expand_path("../config/signin.yml", __FILE__)
    elements = YAML.load(File.read(file_path));
    super(browser, elements)
end

女版6.8.0 selenium-webdriver 版本3.5.1 壁虎驱动助手@987654327@

更新

完整的堆栈跟踪：

http://127.0.0.1:4444/session/02500e7f-0c52-1e40-b151-39b2d857d17f/execute/sync | {"script":"return (function(){return function(){var d=this;function f(a){return\"string\"==typeof a};function h(a,b){this.code=a;this.a=l[a]||m;this.message=b||\"\";a=this.a.replace(/((?:^|\\s+)[a-z])/g,function(a){return a.toUpperCase().replace(/^[\\s\\xa0]+/g,\"\")});b=a.length-5;if(0>b||a.indexOf(\"Error\",b)!=b)a+=\"Error\";this.name=a;a=Error(this.message);a.name=this.name;this.stack=a.stack||\"\"}\n(function(){var a=Error;function b(){}b.prototype=a.prototype;h.b=a.prototype;h.prototype=new b;h.prototype.constructor=h;h.a=function(b,c,g){for(var e=Array(arguments.length-2),k=2;k<arguments.length;k++)e[k-2]=arguments[k];return a.prototype[c].apply(b,e)}})();var m=\"unknown error\",l={15:\"element not selectable\",11:\"element not visible\"};l[31]=m;l[30]=m;l[24]=\"invalid cookie domain\";l[29]=\"invalid element coordinates\";l[12]=\"invalid element state\";l[32]=\"invalid selector\";l[51]=\"invalid selector\";\nl[52]=\"invalid selector\";l[17]=\"javascript error\";l[405]=\"unsupported operation\";l[34]=\"move target out of bounds\";l[27]=\"no such alert\";l[7]=\"no such element\";l[8]=\"no such frame\";l[23]=\"no such window\";l[28]=\"script timeout\";l[33]=\"session not created\";l[10]=\"stale element reference\";l[21]=\"timeout\";l[25]=\"unable to set cookie\";l[26]=\"unexpected alert open\";l[13]=m;l[9]=\"unknown command\";h.prototype.toString=function(){return this.name+\": \"+this.message};var n;a:{var p=d.navigator;if(p){var q=p.userAgent;if(q){n=q;break a}}n=\"\"}function r(a){return-1!=n.indexOf(a)};function t(a,b){for(var e=a.length,c=f(a)?a.split(\"\"):a,g=0;g<e;g++)g in c&&b.call(void 0,c[g],g,a)};function v(){return r(\"iPhone\")&&!r(\"iPod\")&&!r(\"iPad\")};function w(){return(r(\"Chrome\")||r(\"CriOS\"))&&!r(\"Edge\")};var x=r(\"Opera\"),y=r(\"Trident\")||r(\"MSIE\"),z=r(\"Edge\"),A=r(\"Gecko\")&&!(-1!=n.toLowerCase().indexOf(\"webkit\")&&!r(\"Edge\"))&&!(r(\"Trident\")||r(\"MSIE\"))&&!r(\"Edge\"),aa=-1!=n.toLowerCase().indexOf(\"webkit\")&&!r(\"Edge\");function B(){var a=d.document;return a?a.documentMode:void 0}var C;\na:{var D=\"\",E=function(){var a=n;if(A)return/rv\\:([^\\);]+)(\\)|;)/.exec(a);if(z)return/Edge\\/([\\d\\.]+)/.exec(a);if(y)return/\\b(?:MSIE|rv)[: ]([^\\);]+)(\\)|;)/.exec(a);if(aa)return/WebKit\\/(\\S+)/.exec(a);if(x)return/(?:Version)[ \\/]?(\\S+)/.exec(a)}();E&&(D=E?E[1]:\"\");if(y){var F=B();if(null!=F&&F>parseFloat(D)){C=String(F);break a}}C=D}var G;var H=d.document;G=H&&y?B()||(\"CSS1Compat\"==H.compatMode?parseInt(C,10):5):void 0;var ba=r(\"Firefox\"),ca=v()||r(\"iPod\"),da=r(\"iPad\"),I=r(\"Android\")&&!(w()||r(\"Firefox\")||r(\"Opera\")||r(\"Silk\")),ea=w(),J=r(\"Safari\")&&!(w()||r(\"Coast\")||r(\"Opera\")||r(\"Edge\")||r(\"Silk\")||r(\"Android\"))&&!(v()||r(\"iPad\")||r(\"iPod\"));function K(a){return(a=a.exec(n))?a[1]:\"\"}(function(){if(ba)return K(/Firefox\\/([0-9.]+)/);if(y||z||x)return C;if(ea)return v()||r(\"iPad\")||r(\"iPod\")?K(/CriOS\\/([0-9.]+)/):K(/Chrome\\/([0-9.]+)/);if(J&&!(v()||r(\"iPad\")||r(\"iPod\")))return K(/Version\\/([0-9.]+)/);if(ca||da){var a=/Version\\/(\\S+).*Mobile\\/(\\S+)/.exec(n);if(a)return a[1]+\".\"+a[2]}else if(I)return(a=K(/Android\\s+([0-9.]+)/))?a:K(/Version\\/([0-9.]+)/);return\"\"})();var L,M=function(){if(!A)return!1;var a=d.Components;if(!a)return!1;try{if(!a.classes)return!1}catch(g){return!1}var b=a.classes,a=a.interfaces,e=b[\"@mozilla.org/xpcom/version-comparator;1\"].getService(a.nsIVersionComparator),c=b[\"@mozilla.org/xre/app-info;1\"].getService(a.nsIXULAppInfo).version;L=function(a){e.compare(c,\"\"+a)};return!0}(),N=y&&!(8<=Number(G)),fa=y&&!(9<=Number(G));I&&M&&L(2.3);I&&M&&L(4);J&&M&&L(6);var ga={SCRIPT:1,STYLE:1,HEAD:1,IFRAME:1,OBJECT:1},O={IMG:\" \",BR:\"\\n\"};function P(a,b,e){if(!(a.nodeName in ga))if(3==a.nodeType)e?b.push(String(a.nodeValue).replace(/(\\r\\n|\\r|\\n)/g,\"\")):b.push(a.nodeValue);else if(a.nodeName in O)b.push(O[a.nodeName]);else for(a=a.firstChild;a;)P(a,b,e),a=a.nextSibling};function Q(a,b){b=b.toLowerCase();return\"style\"==b?ha(a.style.cssText):N&&\"value\"==b&&R(a,\"INPUT\")?a.value:fa&&!0===a[b]?String(a.getAttribute(b)):(a=a.getAttributeNode(b))&&a.specified?a.value:null}var ia=/[;]+(?=(?:(?:[^\"]*\"){2})*[^\"]*$)(?=(?:(?:[^']*'){2})*[^']*$)(?=(?:[^()]*\\([^()]*\\))*[^()]*$)/;\nfunction ha(a){var b=[];t(a.split(ia),function(a){var c=a.indexOf(\":\");0<c&&(a=[a.slice(0,c),a.slice(c+1)],2==a.length&&b.push(a[0].toLowerCase(),\":\",a[1],\";\"))});b=b.join(\"\");return b=\";\"==b.charAt(b.length-1)?b:b+\";\"}function S(a,b){N&&\"value\"==b&&R(a,\"OPTION\")&&null===Q(a,\"value\")?(b=[],P(a,b,!1),a=b.join(\"\")):a=a[b];return a}function R(a,b){b&&\"string\"!==typeof b&&(b=b.toString());return!!a&&1==a.nodeType&&(!b||a.tagName.toUpperCase()==b)}\nfunction T(a){return R(a,\"OPTION\")?!0:R(a,\"INPUT\")?(a=a.type.toLowerCase(),\"checkbox\"==a||\"radio\"==a):!1};var ja={\"class\":\"className\",readonly:\"readOnly\"},U=\"async autofocus autoplay checked compact complete controls declare defaultchecked defaultselected defer disabled draggable ended formnovalidate hidden indeterminate iscontenteditable ismap itemscope loop multiple muted nohref noresize noshade novalidate nowrap open paused pubdate readonly required reversed scoped seamless seeking selected spellcheck truespeed willvalidate\".split(\" \");function V(a,b){var e=null,c=b.toLowerCase();if(\"style\"==c)return(e=a.style)&&!f(e)&&(e=e.cssText),e;if((\"selected\"==c||\"checked\"==c)&&T(a)){if(!T(a))throw new h(15,\"Element is not selectable\");b=\"selected\";e=a.type&&a.type.toLowerCase();if(\"checkbox\"==e||\"radio\"==e)b=\"checked\";return S(a,b)?\"true\":null}var g=R(a,\"A\");if(R(a,\"IMG\")&&\"src\"==c||g&&\"href\"==c)return(e=Q(a,c))&&(e=S(a,c)),e;if(\"spellcheck\"==c){e=Q(a,c);if(null!==e){if(\"false\"==e.toLowerCase())return\"false\";if(\"true\"==e.toLowerCase())return\"true\"}return S(a,\nc)+\"\"}g=ja[b]||b;a:if(f(U))c=f(c)&&1==c.length?U.indexOf(c,0):-1;else{for(var u=0;u<U.length;u++)if(u in U&&U[u]===c){c=u;break a}c=-1}if(0<=c)return(e=null!==Q(a,b)||S(a,g))?\"true\":null;try{var k=S(a,g)}catch(ka){}(c=null==k)||(c=typeof k,c=\"object\"==c&&null!=k||\"function\"==c);c?e=Q(a,b):e=k;return null!=e?e.toString():null}var W=[\"_\"],X=d;W[0]in X||!X.execScript||X.execScript(\"var \"+W[0]);\nfor(var Y;W.length&&(Y=W.shift());){var Z;if(Z=!W.length)Z=void 0!==V;Z?X[Y]=V:X[Y]&&X[Y]!==Object.prototype[Y]?X=X[Y]:X=X[Y]={}};; return this._.apply(null,arguments);}.apply({navigator:typeof window!='undefined'?window.navigator:null,document:typeof window!='undefined'?window.document:null}, arguments);}\n).apply(null, arguments)","args":[{"element-6066-11e4-a52e-4f735466cecf":"cae111e7-8b5a-6747-8835-b4fa9d8d0c42"},"readOnly"]}
2017-09-01 15:04:51 DEBUG Selenium      > {"Accept"=>"application/json", "Content-Type"=>"application/json; charset=utf-8", "Content-Length"=>"6725"}
2017-09-01 15:04:51 INFO Selenium <- {"value":null}
2017-09-01 15:04:51 INFO Selenium -> POST session/02500e7f-0c52-1e40-b151-39b2d857d17f/element/cae111e7-8b5a-6747-8835-b4fa9d8d0c42/clear
2017-09-01 15:04:51 INFO Selenium <- {"value": {}}
2017-09-01 15:04:51 INFO Selenium -> POST session/02500e7f-0c52-1e40-b151-39b2d857d17f/element/cae111e7-8b5a-6747-8835-b4fa9d8d0c42/value
2017-09-01 15:04:51 INFO Selenium    >>> http://127.0.0.1:4444/session/02500e7f-0c52-1e40-b151-39b2d857d17f/element/cae111e7-8b5a-6747-8835-b4fa9d8d0c42/value | {"value":["s","a","n","d","e","e","p",".","k","u","m","a","r","@","v","o","c","u","s",".","c","o","m",".","a","u"],"text":"sandeep.kumar@vocus.com.au"}
2017-09-01 15:04:51 DEBUG Selenium      > {"Accept"=>"application/json", "Content-Type"=>"application/json; charset=utf-8", "Content-Length"=>"151"}
2017-09-01 15:04:51 INFO Selenium <- {"value":{"error":"invalid argument","message":"Expected [object Undefined] undefined to be a string","stacktrace":"stack backtrace:\n   0:        0x10f2b179e - backtrace::backtrace::trace::h5d936e38aaf1110e\n   1:        0x10f2b1edc - backtrace::capture::Backtrace::new::h90c05c8c72e0f6cd\n   2:        0x10f1f5ca0 - geckodriver::marionette::MarionetteSession::response::h08aa31b0bbd51dd7\n   3:        0x10f1f3655 - _$LT$geckodriver..marionette..MarionetteHandler$u20$as$u20$webdriver..server..WebDriverHandler$LT$geckodriver..marionette..GeckoExtensionRoute$GT$$GT$::handle_command::h5bcbc41bc7c51981\n   4:        0x10f1c1830 - std::panicking::try::do_call::h532e0d8672b70b60\n   5:        0x10f33270a - __rust_maybe_catch_panic\n   6:        0x10f1d2896 - _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::h4a379663166b1095\n   7:        0x10f330ba4 - std::sys::imp::thread::Thread::new::thread_start::hf410a68837ea407b\n   8:     0x7fffcbbff93a - _pthread_body\n   9:     0x7fffcbbff886 - _pthread_start"}}
  Scenario: QB Ethernet UI validations # features/ui_validations_vocusone.feature:13
    Given QB Ethernet UI validations   # features/step_definitions/ui_validations_vocusone.rb:61
      Expected [object Undefined] undefined to be a string (Selenium::WebDriver::Error::InvalidArgumentError)
      ./features/support/pages/page.rb:35:in `block (3 levels) in generate'
      ./features/step_definitions/ui_validations_vocusone.rb:63:in `/^QB Ethernet UI validations$/'
      features/ui_validations_vocusone.feature:14:in `Given QB Ethernet UI validations'
2017-09-01 15:04:51 INFO Selenium -> DELETE session/02500e7f-0c52-1e40-b151-39b2d857d17f
1504242291281   Marionette      INFO    New connections will no longer be accepted
2017-09-01 15:04:51 INFO Selenium <- {"value": {}}

【问题讨论】：

你能提供完整的堆栈跟踪吗？和/或在代码执行之前添加：Selenium::WebDriver.logger.level = :debug 并链接到日志的要点？
使用堆栈跟踪更新了问题详细信息。谢谢。
对此的任何更新。谢谢。

标签： ruby watir watir-webdriver

【解决方案1】：

我查看了我自己发布的问题以及我的代码。意识到我提到bundle update 搞砸了可执行代码后，我查看了我的Gemfile。我能够发现罪魁祸首是geckodriver-helper，它破坏了我通过homebrew 安装的geckodriver。

经验教训：通过 homebrew 或 gemfile 安装，但不能同时安装

【讨论】：