feat: additional tests for terminal history navigation

Author: leonardo3130

tests/terminal.history.spec.tsx

@@ -103,3 +103,31 @@ describe("Terminal history persistence", () => {
     expect(input).toHaveValue("first");
   });
 });
+
+test("preserves current input when navigating history and returning back down", () => {
+  localStorage.setItem("terminal-history", JSON.stringify(["old1", "old2"]));
+
+  render(<Terminal onInput={() => { }} />);
+  const input = screen.getByPlaceholderText("Terminal Hidden Input");
+
+  fireEvent.change(input, { target: { value: "new-typing" } });
+
+  fireEvent.keyDown(input, { key: "ArrowUp" });
+  expect(input).toHaveValue("old2");
+
+  fireEvent.keyDown(input, { key: "ArrowDown" });
+  expect(input).toHaveValue("new-typing");
+});
+
+test("does not clear input when ArrowDown is pressed while at latest history entry", () => {
+  localStorage.setItem("terminal-history", JSON.stringify(["cmdA", "cmdB"]));
+
+  render(<Terminal onInput={() => { }} />);
+  const input = screen.getByPlaceholderText("Terminal Hidden Input");
+
+  fireEvent.keyDown(input, { key: "ArrowUp" });
+  expect(input).toHaveValue("cmdB");
+
+  fireEvent.keyDown(input, { key: "ArrowDown" });
+  expect(input).toHaveValue("");
+});