This is a testharness.js-based test.
[FAIL] Paste handler detaches EditContext
  assert_true: Should fire paste event. expected true got false
[FAIL] Paste handler redirects focus to another EditContext editor
  assert_true: New EditContext should receive text. expected true got false
[FAIL] Paste handler sets contenteditable on parent of EditContext editor
  assert_equals: Pasted text should be inserted into DOM. expected "Copied text" but got ""
Harness: the test ran to completion.