This is a testharness.js-based test.
[FAIL] Blob range with no value
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range with incorrect range header
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range with incorrect range header #2
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range with incorrect range header #3
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range request with trailing comma
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range with no start or end
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range request with short range end
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range start should be an ASCII digit
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range should have a dash
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range end should be an ASCII digit
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range should include '-'
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range should include '='
  assert_throws_dom: function "() => xhr.send()" did not throw
[FAIL] Blob range should include 'bytes='
  assert_throws_dom: function "() => xhr.send()" did not throw
Harness: the test ran to completion.