1 files changed, 34 insertions, 0 deletions
diff --git a/toolkit/components/osfile/tests/xpcshell/test_queue.js b/toolkit/components/osfile/tests/xpcshell/test_queue.js
new file mode 100644
index 0000000000..e6e6f841c3
--- /dev/null
+++ b/toolkit/components/osfile/tests/xpcshell/test_queue.js
@@ -0,0 +1,34 @@
+"use strict";
+
+const { OS } = ChromeUtils.import("resource://gre/modules/osfile.jsm");
+
+// Check if Scheduler.queue returned by OS.File.queue is resolved initially.
+add_task(async function check_init() {
+  await OS.File.queue;
+  info("Function resolved");
+});
+
+// Check if Scheduler.queue returned by OS.File.queue is resolved
+// after an operation is successful.
+add_task(async function check_success() {
+  info("Attempting to open a file correctly");
+  await OS.File.open(OS.Path.join(do_get_cwd().path, "test_queue.js"));
+  info("File opened correctly");
+  await OS.File.queue;
+  info("Function resolved");
+});
+
+// Check if Scheduler.queue returned by OS.File.queue is resolved
+// after an operation fails.
+add_task(async function check_failure() {
+  let exception;
+  try {
+    info("Attempting to open a non existing file");
+    await OS.File.open(OS.Path.join(".", "Bigfoot"));
+  } catch (err) {
+    exception = err;
+    await OS.File.queue;
+  }
+  Assert.ok(exception != null);
+  info("Function resolved");
+});