1 files changed, 31 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/test/xpcshell/head_amremotesettings.js b/toolkit/mozapps/extensions/test/xpcshell/head_amremotesettings.js
new file mode 100644
index 0000000000..36741736fa
--- /dev/null
+++ b/toolkit/mozapps/extensions/test/xpcshell/head_amremotesettings.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+ChromeUtils.defineESModuleGetters(this, {
+  RemoteSettings: "resource://services-settings/remote-settings.sys.mjs",
+});
+
+async function setAndEmitFakeRemoteSettingsData(
+  data,
+  expectClientInitialized = true
+) {
+  const { AMRemoteSettings } = ChromeUtils.importESModule(
+    "resource://gre/modules/AddonManager.sys.mjs"
+  );
+  let client;
+  if (expectClientInitialized) {
+    ok(AMRemoteSettings.client, "Got a remote settings client");
+    ok(AMRemoteSettings.onSync, "Got a remote settings 'sync' event handler");
+    client = AMRemoteSettings.client;
+  } else {
+    // No client is expected to exist, and so we create one to inject the expected data
+    // into the RemoteSettings db.
+    client = new RemoteSettings(AMRemoteSettings.RS_COLLECTION);
+  }
+
+  await client.db.clear();
+  if (data.length) {
+    await client.db.importChanges({}, Date.now(), data);
+  }
+  await client.emit("sync", { data: {} });
+}