This is a testharness.js-based test.
[FAIL] The HTML parser should disallow nested options in select datalist.
assert_equals: expected "\\n <datalist>\\n <option id=\\"o1\\">\\n parent\\n </option><option id=\\"o2\\">child</option>\\n\\n </datalist>\\n" but got "\\n \\n <option id=\\"o1\\">\\n parent\\n </option><option id=\\"o2\\">child</option>\\n\\n \\n"
[FAIL] Nested <options> should be listed in <select> IDLs.
assert_equals: select.options.length expected 2 but got 1
Harness: the test ran to completion.