Initial commit

Signed-off-by: Ilan Bigio <ilan@openai.com>

codex-cli/tests/multiline-newline.test.tsx

@@ -0,0 +1,56 @@
+import { renderTui } from "./ui-test-helpers.js";
+import MultilineTextEditor from "../src/components/chat/multiline-editor.js";
+import * as React from "react";
+import { describe, it, expect } from "vitest";
+
+// Helper to send keystrokes and wait for Ink's async timing so that the frame
+// reflects the input.
+async function type(
+  stdin: NodeJS.WritableStream,
+  text: string,
+  flush: () => Promise<void>,
+) {
+  stdin.write(text);
+  await flush();
+}
+
+describe("MultilineTextEditor – inserting new lines", () => {
+  // Same as above – the React wrapper still differs from the Rust reference
+  // when handling <Enter>.  Keep the test around but mark it as expected to
+  // fail.
+  it("splits the line and renders the new row when <Enter> is pressed", async () => {
+    const { stdin, lastFrameStripped, flush, cleanup } = renderTui(
+      React.createElement(MultilineTextEditor, {
+        height: 5,
+        width: 20,
+        initialText: "",
+      }),
+    );
+
+    // Wait for first render
+    await flush();
+
+    // Type "hello", press Enter, then type "world"
+    await type(stdin, "hello", flush);
+    await type(stdin, "\n", flush); // Enter / Return
+    await type(stdin, "world", flush);
+
+    const frame = lastFrameStripped();
+    const lines = frame.split("\n");
+
+    // eslint-disable-next-line no-console
+    console.log(
+      "\n--- RENDERED FRAME ---\n" + frame + "\n---------------------",
+    );
+
+    // We expect at least two rendered lines and the texts to appear on their
+    // own respective rows.
+    expect(lines.length).toBeGreaterThanOrEqual(2);
+    // First rendered (inside border) line should contain 'hello'
+    expect(lines.some((l: string) => l.includes("hello"))).toBe(true);
+    // Another line should contain 'world'
+    expect(lines.some((l: string) => l.includes("world"))).toBe(true);
+
+    cleanup();
+  });
+});