1 files changed, 69 insertions, 0 deletions
diff --git a/services/settings/test/unit/test_remote_settings_sync_history.js b/services/settings/test/unit/test_remote_settings_sync_history.js
new file mode 100644
index 0000000000..1fdc3d1adc
--- /dev/null
+++ b/services/settings/test/unit/test_remote_settings_sync_history.js
@@ -0,0 +1,69 @@
+"use strict";
+
+const { SyncHistory } = ChromeUtils.importESModule(
+  "resource://services-settings/SyncHistory.sys.mjs"
+);
+
+async function clear_state() {
+  await new SyncHistory("").clear();
+}
+add_task(clear_state);
+
+add_task(async function test_entries_are_stored_by_source() {
+  const history = new SyncHistory();
+  await history.store("42", "success", { pi: "3.14" });
+  // Check that history is isolated by source.
+  await new SyncHistory("main/cfr").store("88", "error");
+
+  const l = await history.list();
+
+  Assert.deepEqual(l, [
+    {
+      timestamp: 42,
+      status: "success",
+      infos: { pi: "3.14" },
+      datetime: new Date(42),
+    },
+  ]);
+});
+add_task(clear_state);
+
+add_task(
+  async function test_old_entries_are_removed_keep_fixed_size_per_source() {
+    const history = new SyncHistory("settings-sync", { size: 3 });
+    const anotherHistory = await new SyncHistory("main/cfr");
+
+    await history.store("42", "success");
+    await history.store("41", "sync_error");
+    await history.store("43", "up_to_date");
+
+    let l = await history.list();
+    Assert.equal(l.length, 3);
+
+    await history.store("44", "success");
+    await anotherHistory.store("44", "success");
+
+    l = await history.list();
+    Assert.equal(l.length, 3);
+    Assert.ok(!l.map(e => e.timestamp).includes(41));
+
+    l = await anotherHistory.list();
+    Assert.equal(l.length, 1);
+  }
+);
+add_task(clear_state);
+
+add_task(async function test_entries_are_sorted_by_timestamp_desc() {
+  const history = new SyncHistory("settings-sync");
+  await history.store("42", "success");
+  await history.store("41", "sync_error");
+  await history.store("44", "up_to_date");
+
+  const l = await history.list();
+
+  Assert.deepEqual(
+    l.map(e => e.timestamp),
+    [44, 42, 41]
+  );
+});
+add_task(clear_state);