1 files changed, 65 insertions, 0 deletions
diff --git a/dom/quota/test/modules/system/StorageUtils.sys.mjs b/dom/quota/test/modules/system/StorageUtils.sys.mjs
new file mode 100644
index 0000000000..bda40a4747
--- /dev/null
+++ b/dom/quota/test/modules/system/StorageUtils.sys.mjs
@@ -0,0 +1,65 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+class RequestError extends Error {
+  constructor(resultCode, resultName) {
+    super(`Request failed (code: ${resultCode}, name: ${resultName})`);
+    this.name = "RequestError";
+    this.resultCode = resultCode;
+    this.resultName = resultName;
+  }
+}
+
+export function setStoragePrefs(optionalPrefsToSet) {
+  const prefsToSet = [["dom.quotaManager.testing", true]];
+
+  if (Services.appinfo.OS === "WINNT") {
+    prefsToSet.push(["dom.quotaManager.useDOSDevicePathSyntax", true]);
+  }
+
+  if (optionalPrefsToSet) {
+    prefsToSet.push(...optionalPrefsToSet);
+  }
+
+  for (const pref of prefsToSet) {
+    Services.prefs.setBoolPref(pref[0], pref[1]);
+  }
+}
+
+export function clearStoragePrefs(optionalPrefsToClear) {
+  const prefsToClear = [
+    "dom.quotaManager.testing",
+    "dom.simpleDB.enabled",
+    "dom.storageManager.enabled",
+  ];
+
+  if (Services.appinfo.OS === "WINNT") {
+    prefsToClear.push("dom.quotaManager.useDOSDevicePathSyntax");
+  }
+
+  if (optionalPrefsToClear) {
+    prefsToClear.push(...optionalPrefsToClear);
+  }
+
+  for (const pref of prefsToClear) {
+    Services.prefs.clearUserPref(pref);
+  }
+}
+
+export async function clearStoragesForOrigin(principal) {
+  const request = Services.qms.clearStoragesForPrincipal(principal);
+
+  await new Promise(function(resolve) {
+    request.callback = function() {
+      resolve();
+    };
+  });
+
+  if (request.resultCode != Cr.NS_OK) {
+    throw new RequestError(request.resultCode, request.resultName);
+  }
+
+  return request.result;
+}