Context name "2d" plus a "\0" suffix is unrecognised
Actual output:
FAIL (fallback content)
Harness status: OK
Found 1 tests
assert_equals(null, null, "canvas.getContext(\"2d\\0\") === null (got [object], expected [object])") at _assertSame ( /html/canvas/resources/canvas-tests.js:17:5)