LayoutTests/imported/w3c/web-platform-tests/IndexedDB/blob-valid-after-deletion.any.js

// META: title=Blob Valid After Deletion
// META: script=support.js

let key = "key";

indexeddb_test(
  function upgrade(t, db) {
    db.createObjectStore('store');
  },
  function success(t, db) {
    const blobAContent = "Blob A content";
    const blobBContent = "Blob B content";
    const blobA = new Blob([blobAContent], {"type" : "text/plain"});
    const blobB = new Blob([blobBContent], {"type" : "text/plain"});
    value = { a0: blobA, a1: blobA, b0: blobB };

    const tx = db.transaction('store', 'readwrite');
    var store = tx.objectStore('store');

    store.put(value, key);
    value = null;

    const trans = db.transaction('store');
    store = trans.objectStore('store');
    const request = store.get(key);

    request.onsuccess = t.step_func(function() {
      const record = request.result;

      trans.oncomplete = t.step_func(function() {
        const trans = db.transaction('store', 'readwrite');
        store = trans.objectStore('store');
        const request = store.delete(key);

        trans.oncomplete = t.step_func(function() {
          const promise1 = record.a0.text().then(t.step_func(text => { assert_equals(text, blobAContent); },
            t.unreached_func()));

          const promise2 = record.a1.text().then(t.step_func(text => { assert_equals(text, blobAContent); },
            t.unreached_func()));

          const promise3 = record.b0.text().then(t.step_func(text => { assert_equals(text, blobBContent); },
            t.unreached_func()));

          Promise.all([promise1, promise2, promise3]).then(function() {
            // The test passes if it successfully completes.
            t.done();
          });
        });
      });
    });
  },
  "Blobs stay alive after their records are deleted.");