title: How to get a nativeElement [attributes] value in angular test?
body: <p>There are not any problem to take attributes value in the following case: </p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;object class="someClass" someAttribute="someValue"&gt;&lt;/object&gt;
  </code></pre>
  
  <pre class="lang-js prettyprint-override"><code>const elem = fixture.debugElement.query(By.css('.someClass')).nativeElement;
  elem.getAttribute('someAttribute'); // result 'someValue'
  </code></pre>
  
  <p>But how to take attributes value in this case?</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;object class="someClass" [someAttribute]="someValue"&gt;&lt;/object&gt;
  </code></pre>