| Fail | Neither the removing, moving, nor insertion steps for the source element track the previous 'next sibling' pointer when triggering relevant mutations for remaining child image elements of its old parent | promise_test: Unhandled rejection with value: object "TypeError: document.body.moveBefore is not a function"Error
at get_stack (https://wpt.live/resources/testharness.js:4571:21)
at new AssertionError (https://wpt.live/resources/testharness.js:4564:22)
at assert (https://wpt.live/resources/testharness.js:4548:19)
at Test.<anonymous> (https://wpt.live/resources/testharness.js:764:29)
at Test.step (https://wpt.live/resources/testharness.js:2642:25)
at https://wpt.live/resources/testharness.js:2689:35Asserts run| Pass | assert_equals("data:,s1", "data:,s1", "[img1] First source is correctly chosen")
at Test.<anonymous> ( /html/semantics/embedded-content/the-img-element/source-relevant-mutations.html:29:3) | | Pass | assert_equals("data:,s1", "data:,s1", "[img2] First source is correctly chosen")
at Test.<anonymous> ( /html/semantics/embedded-content/the-img-element/source-relevant-mutations.html:30:3) | | Pass | assert_equals("data:,s2", "data:,s2", "[img1] Second source is chosen after first is removed")
at Test.<anonymous> ( /html/semantics/embedded-content/the-img-element/source-relevant-mutations.html:36:3) | | Pass | assert_equals("data:,s2", "data:,s2", "[img2] Second source is chosen after first is removed")
at Test.<anonymous> ( /html/semantics/embedded-content/the-img-element/source-relevant-mutations.html:38:3) | | Pass | assert_equals("data:,s3", "data:,s3", "[img1] Third is chosen after first is removed")
at Test.<anonymous> ( /html/semantics/embedded-content/the-img-element/source-relevant-mutations.html:44:3) | | Pass | assert_equals("data:,s3", "data:,s3", "[img2] Third is chosen after first is removed")
at Test.<anonymous> ( /html/semantics/embedded-content/the-img-element/source-relevant-mutations.html:46:3) |
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