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<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>215450</bug_id>
          
          <creation_ts>2020-08-13 08:11:57 -0700</creation_ts>
          <short_desc>[ macOS ] imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative.html is a flaky failure</short_desc>
          <delta_ts>2025-11-27 03:47:05 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>New Bugs</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>DUPLICATE</resolution>
          <dup_id>302693</dup_id>
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Hector Lopez">hector_i_lopez</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>jean-yves.avenard</cc>
    
    <cc>webkit-bot-watchers-bugzilla</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1679977</commentid>
    <comment_count>0</comment_count>
    <who name="Hector Lopez">hector_i_lopez</who>
    <bug_when>2020-08-13 08:11:57 -0700</bug_when>
    <thetext>imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative.html

Test is a flaky failure according to history on macOS. The first occurrence of failure was at r264379. That occurrence happens on the same day as resync https://trac.webkit.org/changeset/264345/webkit

History:
https://results.webkit.org/?suite=layout-tests&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-negative.html&amp;limit=50000&amp;platform=mac

Diff:
--- /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative-actual.txt
@@ -1,3 +1,5 @@
+
+Harness Error (TIMEOUT), message = null
 
 PASS Check if browser supports enough test media types across audio and video for changeType negative tests 
 PASS Negative test audio&lt;-&gt;video changeType for audio/mp4; codecs=&quot;mp4a.40.2&quot; &lt;-&gt; video/mp4; codecs=&quot;avc1.4D4001&quot; 
@@ -8,7 +10,7 @@
 PASS Negative test video&lt;-&gt;audio changeType for video/mp4; codecs=&quot;avc1.4D4001&quot; &lt;-&gt; audio/mp4; codecs=&quot;mp4a.40.2&quot; (using types without codecs parameters) 
 PASS Negative test audio&lt;-&gt;video implicit changeType for audio/mp4; codecs=&quot;mp4a.40.2&quot; &lt;-&gt; video/mp4; codecs=&quot;avc1.4D4001&quot; (without codecs parameters for addSourceBuffer) 
 PASS Negative test video&lt;-&gt;audio implicit changeType for video/mp4; codecs=&quot;avc1.4D4001&quot; &lt;-&gt; audio/mp4; codecs=&quot;mp4a.40.2&quot; (without codecs parameters for addSourceBuffer) 
-FAIL Negative test audio&lt;-&gt;video changeType for audio/mpeg &lt;-&gt; video/mp4; codecs=&quot;avc1.4D4001&quot; assert_unreached: Received &apos;ended&apos; while negative testing. Reached unreachable code
+TIMEOUT Negative test audio&lt;-&gt;video changeType for audio/mpeg &lt;-&gt; video/mp4; codecs=&quot;avc1.4D4001&quot; Test timed out
 FAIL Negative test video&lt;-&gt;audio changeType for video/mp4; codecs=&quot;avc1.4D4001&quot; &lt;-&gt; audio/mpeg assert_unreached: Received &apos;ended&apos; while negative testing. Reached unreachable code
 FAIL Negative test audio&lt;-&gt;video changeType for audio/mpeg &lt;-&gt; video/mp4; codecs=&quot;avc1.4D4001&quot; (using types without codecs parameters) assert_unreached: Received &apos;ended&apos; while negative testing. Reached unreachable code
 FAIL Negative test video&lt;-&gt;audio changeType for video/mp4; codecs=&quot;avc1.4D4001&quot; &lt;-&gt; audio/mpeg (using types without codecs parameters) assert_unreached: Received &apos;ended&apos; while negative testing. Reached unreachable code</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1679978</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2020-08-13 08:12:24 -0700</bug_when>
    <thetext>&lt;rdar://problem/66991189&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1679981</commentid>
    <comment_count>2</comment_count>
    <who name="Hector Lopez">hector_i_lopez</who>
    <bug_when>2020-08-13 08:24:59 -0700</bug_when>
    <thetext>Test expectation while investigated:

https://trac.webkit.org/changeset/265605/webkit</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2161609</commentid>
    <comment_count>3</comment_count>
    <who name="Jean-Yves Avenard [:jya]">jean-yves.avenard</who>
    <bug_when>2025-11-27 03:41:03 -0800</bug_when>
    <thetext>

*** This bug has been marked as a duplicate of bug 302692 ***</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2161611</commentid>
    <comment_count>4</comment_count>
    <who name="Jean-Yves Avenard [:jya]">jean-yves.avenard</who>
    <bug_when>2025-11-27 03:47:05 -0800</bug_when>
    <thetext>

*** This bug has been marked as a duplicate of bug 302693 ***</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>