1 files changed, 47 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/test/xpcshell/test_trash_directory.js b/toolkit/mozapps/extensions/test/xpcshell/test_trash_directory.js
new file mode 100644
index 0000000000..2c0540e399
--- /dev/null
+++ b/toolkit/mozapps/extensions/test/xpcshell/test_trash_directory.js
@@ -0,0 +1,47 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const { BasePromiseWorker } = ChromeUtils.importESModule(
+  "resource://gre/modules/PromiseWorker.sys.mjs"
+);
+
+// Test that an open file inside the trash directory does not cause
+// unrelated installs to break (see bug 1180901 for more background).
+add_task(async function test() {
+  createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "1", "1.9.2");
+  await promiseStartupManager();
+
+  let profileDir = PathUtils.profileDir;
+  let trashDir = PathUtils.join(profileDir, "extensions", "trash");
+  let testFile = PathUtils.join(trashDir, "test.txt");
+
+  await IOUtils.makeDirectory(trashDir);
+
+  let trashDirExists = await IOUtils.exists(trashDir);
+  ok(trashDirExists, "trash directory should have been created");
+
+  await IOUtils.writeUTF8(testFile, "");
+
+  // Use a worker to keep the testFile open.
+  const worker = new BasePromiseWorker(
+    "resource://test/data/test_trash_directory.worker.js"
+  );
+  await worker.post("open", [testFile]);
+
+  let fileExists = await IOUtils.exists(testFile);
+  ok(fileExists, "test.txt should have been created in " + trashDir);
+
+  await promiseInstallWebExtension({});
+
+  // The testFile should still exist at this point because we have not
+  // yet closed the file handle and as a result, Windows cannot remove it.
+  fileExists = await IOUtils.exists(testFile);
+  ok(fileExists, "test.txt should still exist");
+
+  // Cleanup
+  await promiseShutdownManager();
+  await worker.post("close", []);
+  await IOUtils.remove(testFile);
+  await IOUtils.remove(trashDir, { recursive: true });
+});