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<!doctype html>
<title>BlobEvent constructor</title>
<link rel="help" href="https://w3c.github.io/mediacapture-record/MediaRecorder.html#blob-event">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(function() {
  assert_equals(BlobEvent.length, 2);
  assert_throws(new TypeError, function() {
    new BlobEvent("type");
  });
  assert_throws(new TypeError, function() {
    new BlobEvent("type", null);
  });
  assert_throws(new TypeError, function() {
    new BlobEvent("type", undefined);
  });
}, "The BlobEventInit dictionary is required");

test(function() {
  assert_throws(new TypeError, function() {
    new BlobEvent("type", {});
  });
  assert_throws(new TypeError, function() {
    new BlobEvent("type", { data: null });
  });
  assert_throws(new TypeError, function() {
    new BlobEvent("type", { data: undefined });
  });
}, "The BlobEventInit dictionary's data member is required.");

test(function() {
  var blob = new Blob();
  var event = new BlobEvent("type", { data: blob });
  assert_equals(event.type, "type");
  assert_equals(event.data, blob);
}, "The BlobEvent instance's data attribute is set.");
</script>