源码快照 @ 2026-09-02 (source-only, 剔除非源码素材)

apps/app/tests/cloud-provider-sync-triggers.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, test } from "bun:test";
+
+import { denSettingsChangedEvent } from "../src/app/lib/den-session-events";
+import { subscribeCloudProviderSyncTriggers } from "../src/react-app/domains/cloud/use-cloud-provider-auto-sync";
+
+describe("cloud provider sync triggers", () => {
+  test("reconciles on settings, focus, online, visible, and coarse interval transitions", async () => {
+    const windowTarget = new EventTarget();
+    const documentTarget = new EventTarget();
+    const reasons: string[] = [];
+    let visible = false;
+    const unsubscribe = subscribeCloudProviderSyncTriggers({
+      windowTarget,
+      documentTarget,
+      isDocumentVisible: () => visible,
+      sync: (reason) => reasons.push(reason),
+      intervalMs: 10,
+    });
+
+    windowTarget.dispatchEvent(new Event(denSettingsChangedEvent));
+    windowTarget.dispatchEvent(new Event("focus"));
+    windowTarget.dispatchEvent(new Event("online"));
+    documentTarget.dispatchEvent(new Event("visibilitychange"));
+    visible = true;
+    documentTarget.dispatchEvent(new Event("visibilitychange"));
+
+    expect(reasons).toEqual(["sign_in", "app_resume", "app_resume", "app_resume"]);
+
+    await Bun.sleep(25);
+    expect(reasons.length).toBeGreaterThan(4);
+    expect(reasons.at(-1)).toBe("app_resume");
+
+    unsubscribe();
+    const reasonCount = reasons.length;
+    windowTarget.dispatchEvent(new Event("focus"));
+    await Bun.sleep(15);
+    expect(reasons).toHaveLength(reasonCount);
+  });
+});