[HtmlUnit] [htmlunit:bugs] #1920 getOwnPropertyDescriptor(input, 'value').get.call is undefined
RBRi via HtmlUnit-develop <[email protected]> Sat, 04 Jan 2020 17:34:45 -0000
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Testcase added as
com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine2Test.getOwnPropertyDescriptorGetCall()
---
** [bugs:#1920] getOwnPropertyDescriptor(input, 'value').get.call is undefined**
**Status:** accepted
**Group:** Latest SVN
**Created:** Tue Sep 12, 2017 07:25 AM UTC by Atsushi Nakagawa
**Last Updated:** Sun Aug 05, 2018 10:50 AM UTC
**Owner:** nobody
Tested against latest trunk which is r14831.
This is related to [#1900](https://sourceforge.net/p/htmlunit/bugs/1900/) in that its fix is required to uncover this problem.
# Problem:
`Object.getOwnPropertyDescriptor(HTMLInputElement, "value")` returns an instance whose `.get.call` is `undefined`.
# Test:
The following code:
```
<!DOCTYPE html>
<html>
<head>
<script>
function test() {
var x = Object.getOwnPropertyDescriptor(i1.constructor.prototype, 'value')
console.log('x = ' + x)
console.log('x.get = ' + x.get)
console.log('x.get.call = ' + x.get.call)
}
</script>
</head>
<body>
<input type="text" id="i1" value="foo"/>
<input type="button" onclick="test()" value="test"/>
</body>
</html>
```
Produces something similar to this in major browsers:
```
x = [object Object]
x.get = function () { [native code] }
x.get.call = function call() { [native code] }
```
The result with htmlunit r14831 is:
```
x = [object Object]
x.get = function () { [native code] }
x.get.call = undefined
```
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<div class="markdown_content"><p>Testcase added as</p>
<p>com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine2Test.getOwnPropertyDescriptorGetCall()</p>
<hr/>
<p><strong> <a class="alink" href="https://sourceforge.net/p/htmlunit/bugs/1920/">[bugs:#1920]</a> getOwnPropertyDescriptor(input, 'value').get.call is undefined</strong></p>
<p><strong>Status:</strong> accepted<br/>
<strong>Group:</strong> Latest SVN<br/>
<strong>Created:</strong> Tue Sep 12, 2017 07:25 AM UTC by Atsushi Nakagawa<br/>
<strong>Last Updated:</strong> Sun Aug 05, 2018 10:50 AM UTC<br/>
<strong>Owner:</strong> nobody</p>
<p>Tested against latest trunk which is r14831.</p>
<p>This is related to <a class="" href="https://sourceforge.net/p/htmlunit/bugs/1900/">#1900</a> in that its fix is required to uncover this problem.</p>
<h1 id="problem">Problem:</h1>
<p><code>Object.getOwnPropertyDescriptor(HTMLInputElement, "value")</code> returns an instance whose <code>.get.call</code> is <code>undefined</code>.</p>
<h1 id="test">Test:</h1>
<p>The following code:</p>
<div class="codehilite"><pre><span></span><span class="cp"><!DOCTYPE html></span>
<span class="p"><</span><span class="nt">html</span><span class="p">></span>
<span class="p"><</span><span class="nt">head</span><span class="p">></span>
<span class="p"><</span><span class="nt">script</span><span class="p">></span>
<span class="kd">function</span> <span class="nx">test</span><span class="p">()</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">x</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">getOwnPropertyDescriptor</span><span class="p">(</span><span class="nx">i1</span><span class="p">.</span><span class="nx">constructor</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="s1">'value'</span><span class="p">)</span>
<span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s1">'x = '</span> <span class="o">+</span> <span class="nx">x</span><span class="p">)</span>
<span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s1">'x.get = '</span> <span class="o">+</span> <span class="nx">x</span><span class="p">.</span><span class="nx">get</span><span class="p">)</span>
<span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s1">'x.get.call = '</span> <span class="o">+</span> <span class="nx">x</span><span class="p">.</span><span class="nx">get</span><span class="p">.</span><span class="nx">call</span><span class="p">)</span>
<span class="p">}</span>
<span class="p"></</span><span class="nt">script</span><span class="p">></span>
<span class="p"></</span><span class="nt">head</span><span class="p">></span>
<span class="p"><</span><span class="nt">body</span><span class="p">></span>
<span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"text"</span> <span class="na">id</span><span class="o">=</span><span class="s">"i1"</span> <span class="na">value</span><span class="o">=</span><span class="s">"foo"</span><span class="p">/></span>
<span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"button"</span> <span class="na">onclick</span><span class="o">=</span><span class="s">"test()"</span> <span class="na">value</span><span class="o">=</span><span class="s">"test"</span><span class="p">/></span>
<span class="p"></</span><span class="nt">body</span><span class="p">></span>
<span class="p"></</span><span class="nt">html</span><span class="p">></span>
</pre></div>
<p>Produces something similar to this in major browsers:</p>
<div class="codehilite"><pre><span></span><span class="n">x</span> <span class="o">=</span> <span class="p">[</span><span class="n">object</span> <span class="n">Object</span><span class="p">]</span>
<span class="n">x</span><span class="p">.</span><span class="n">get</span> <span class="o">=</span> <span class="n">function</span> <span class="p">()</span> <span class="p">{</span> <span class="p">[</span><span class="n">native</span> <span class="n">code</span><span class="p">]</span> <span class="p">}</span>
<span class="n">x</span><span class="p">.</span><span class="n">get</span><span class="p">.</span><span class="n">call</span> <span class="o">=</span> <span class="n">function</span> <span class="n">call</span><span class="p">()</span> <span class="p">{</span> <span class="p">[</span><span class="n">native</span> <span class="n">code</span><span class="p">]</span> <span class="p">}</span>
</pre></div>
<p>The result with htmlunit r14831 is:</p>
<div class="codehilite"><pre><span></span><span class="n">x</span> <span class="o">=</span> <span class="p">[</span><span class="n">object</span> <span class="n">Object</span><span class="p">]</span>
<span class="n">x</span><span class="p">.</span><span class="n">get</span> <span class="o">=</span> <span class="n">function</span> <span class="p">()</span> <span class="p">{</span> <span class="p">[</span><span class="n">native</span> <span class="n">code</span><span class="p">]</span> <span class="p">}</span>
<span class="n">x</span><span class="p">.</span><span class="n">get</span><span class="p">.</span><span class="n">call</span> <span class="o">=</span> <span class="n">undefined</span>
</pre></div>
<hr/>
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