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diff --git a/dom/indexedDB/test/unit/test_orphaned_files.js b/dom/indexedDB/test/unit/test_orphaned_files.js
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+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+/**
+ * The goal of this test is to prove that orphaned files are cleaned up during
+ * origin initialization. A file is orphaned when there's a file with zero size
+ * in the $dbName.files/journals directory and the file table in the database
+ * contains no records for given id. A file can become orphaned when we didn't
+ * have a chance to remove the file from disk during shutdown or the app just
+ * crashed.
+ */
+
+/* exported testSteps */
+async function testSteps() {
+  const name = "test_orphaned_files.js";
+
+  const objectStoreName = "Blobs";
+
+  const blobData = { key: 1 };
+
+  info("Installing profile");
+
+  let request = clearAllDatabases();
+  await requestFinished(request);
+
+  // The profile contains one initialized origin directory (with an IndexedDB
+  // database and an orphaned file), a script for origin initialization and the
+  // storage database:
+  // - storage/permanent/chrome
+  // - create_db.js
+  // - storage.sqlite
+  // The file create_db.js in the package was run locally, specifically it was
+  // temporarily added to xpcshell.ini and then executed:
+  //   mach xpcshell-test --interactive dom/indexedDB/test/unit/create_db.js
+  // Note: to make it become the profile in the test, additional manual steps
+  // are needed.
+  // 1. Remove the file "storage/ls-archive.sqlite".
+
+  installPackagedProfile("orphaned_files_profile");
+
+  info("Opening database");
+
+  request = indexedDB.open(name);
+  await expectingSuccess(request);
+
+  info("Getting data");
+
+  request = request.result
+    .transaction([objectStoreName])
+    .objectStore(objectStoreName)
+    .get(blobData.key);
+  await requestSucceeded(request);
+
+  info("Verifying data");
+
+  ok(request.result === undefined, "Correct result");
+}