1 files changed, 47 insertions, 0 deletions
diff --git a/storage/test/unit/test_readonly-immutable-nolock_vfs.js b/storage/test/unit/test_readonly-immutable-nolock_vfs.js
new file mode 100644
index 0000000000..5c11150b0a
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+++ b/storage/test/unit/test_readonly-immutable-nolock_vfs.js
@@ -0,0 +1,47 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file tests the readonly-immutable-nolock VFS.
+
+add_task(async function test() {
+  const path = PathUtils.join(PathUtils.profileDir, "ro");
+  await IOUtils.makeDirectory(path);
+  const dbpath = PathUtils.join(path, "test-immutable.sqlite");
+
+  let conn = await Sqlite.openConnection({ path: dbpath });
+  await conn.execute("PRAGMA journal_mode = WAL");
+  await conn.execute("CREATE TABLE test (id INTEGER PRIMARY KEY)");
+  Assert.ok(await IOUtils.exists(dbpath + "-wal"), "wal journal exists");
+  await conn.close();
+
+  // The wal should have been merged at this point, but just in case...
+  info("Remove auxiliary files and set the folder as readonly");
+  await IOUtils.remove(dbpath + "-wal", { ignoreAbsent: true });
+  await IOUtils.setPermissions(path, 0o555);
+  registerCleanupFunction(async () => {
+    await IOUtils.setPermissions(path, 0o777);
+    await IOUtils.remove(path, { recursive: true });
+  });
+
+  // Windows doesn't disallow creating files in read only folders.
+  if (AppConstants.platform == "macosx" || AppConstants.platform == "linux") {
+    await Assert.rejects(
+      Sqlite.openConnection({ path: dbpath, readOnly: true }),
+      /NS_ERROR_FILE/,
+      "Should not be able to open the db because it can't create a wal journal"
+    );
+  }
+
+  // Open the database with ignoreLockingMode.
+  let conn2 = await Sqlite.openConnection({
+    path: dbpath,
+    ignoreLockingMode: true,
+  });
+  await conn2.execute("SELECT * FROM sqlite_master");
+  Assert.ok(
+    !(await IOUtils.exists(dbpath + "-wal")),
+    "wal journal was not created"
+  );
+  await conn2.close();
+});