tui: add local shell execution for !-prefixed lines

src/tui/tui.submit-handler.test.ts

@@ -0,0 +1,74 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { createEditorSubmitHandler } from "./tui.js";
+
+describe("createEditorSubmitHandler", () => {
+  it("routes lines starting with ! to handleBangLine", () => {
+    const editor = {
+      setText: vi.fn(),
+      addToHistory: vi.fn(),
+    };
+    const handleCommand = vi.fn();
+    const sendMessage = vi.fn();
+    const handleBangLine = vi.fn();
+
+    const onSubmit = createEditorSubmitHandler({
+      editor,
+      handleCommand,
+      sendMessage,
+      handleBangLine,
+    });
+
+    onSubmit("!ls");
+
+    expect(handleBangLine).toHaveBeenCalledTimes(1);
+    expect(handleBangLine).toHaveBeenCalledWith("!ls");
+    expect(sendMessage).not.toHaveBeenCalled();
+    expect(handleCommand).not.toHaveBeenCalled();
+  });
+
+  it("treats a lone ! as a normal message", () => {
+    const editor = {
+      setText: vi.fn(),
+      addToHistory: vi.fn(),
+    };
+    const handleCommand = vi.fn();
+    const sendMessage = vi.fn();
+    const handleBangLine = vi.fn();
+
+    const onSubmit = createEditorSubmitHandler({
+      editor,
+      handleCommand,
+      sendMessage,
+      handleBangLine,
+    });
+
+    onSubmit("!");
+
+    expect(handleBangLine).not.toHaveBeenCalled();
+    expect(sendMessage).toHaveBeenCalledTimes(1);
+    expect(sendMessage).toHaveBeenCalledWith("!");
+  });
+
+  it("does not trim input", () => {
+    const editor = {
+      setText: vi.fn(),
+      addToHistory: vi.fn(),
+    };
+    const handleCommand = vi.fn();
+    const sendMessage = vi.fn();
+    const handleBangLine = vi.fn();
+
+    const onSubmit = createEditorSubmitHandler({
+      editor,
+      handleCommand,
+      sendMessage,
+      handleBangLine,
+    });
+
+    onSubmit("  hello  ");
+
+    expect(sendMessage).toHaveBeenCalledWith("  hello  ");
+    expect(editor.addToHistory).toHaveBeenCalledWith("  hello  ");
+  });
+});