[Init] Initial commit - NetMesh terminal manager

application/state/sftp/useSftpBrowseConnectionLifecycle.test.ts

@@ -0,0 +1,46 @@
+import assert from "node:assert/strict";
+import test, { after } from "node:test";
+import React, { Suspense } from "react";
+import { act, create, type ReactTestRenderer } from "react-test-renderer";
+
+import { useSftpBrowseConnectionLifecycle } from "./useSftpBrowseConnectionLifecycle";
+
+const actEnvironment = globalThis as typeof globalThis & {
+  IS_REACT_ACT_ENVIRONMENT?: boolean;
+};
+const previousActEnvironment = actEnvironment.IS_REACT_ACT_ENVIRONMENT;
+actEnvironment.IS_REACT_ACT_ENVIRONMENT = true;
+after(() => { actEnvironment.IS_REACT_ACT_ENVIRONMENT = previousActEnvironment; });
+
+test("an uncommitted hidden render cannot invalidate live browse connections", async () => {
+  const never = new Promise<void>(() => {});
+  let lifecycleRef: ReturnType<typeof useSftpBrowseConnectionLifecycle> | null = null;
+  let renderer: ReactTestRenderer | null = null;
+
+  function Probe({ interactive }: { interactive: boolean }) {
+    const nextRef = useSftpBrowseConnectionLifecycle(interactive);
+    if (!interactive) throw never;
+    lifecycleRef = nextRef;
+    return null;
+  }
+
+  await act(async () => {
+    renderer = create(React.createElement(
+      Suspense,
+      { fallback: null },
+      React.createElement(Probe, { interactive: true }),
+    ));
+  });
+  assert.deepEqual(lifecycleRef!.current, { generation: 0, interactive: true });
+
+  await act(async () => {
+    renderer!.update(React.createElement(
+      Suspense,
+      { fallback: null },
+      React.createElement(Probe, { interactive: false }),
+    ));
+  });
+
+  assert.deepEqual(lifecycleRef!.current, { generation: 0, interactive: true });
+  act(() => renderer!.unmount());
+});