test(app): model picker smoke test

packages/app/e2e/model-picker.spec.ts

@@ -0,0 +1,43 @@
+import { test, expect } from "./fixtures"
+import { promptSelector } from "./utils"
+
+test("smoke model selection updates prompt footer", async ({ page, gotoSession }) => {
+  await gotoSession()
+
+  await page.locator(promptSelector).click()
+  await page.keyboard.type("/model")
+
+  const command = page.locator('[data-slash-id="model.choose"]')
+  await expect(command).toBeVisible()
+  await command.hover()
+
+  await page.keyboard.press("Enter")
+
+  const dialog = page.getByRole("dialog")
+  await expect(dialog).toBeVisible()
+
+  const input = dialog.getByRole("textbox").first()
+
+  const selected = dialog.locator('[data-slot="list-item"][data-selected="true"]').first()
+  await expect(selected).toBeVisible()
+
+  const other = dialog.locator('[data-slot="list-item"]:not([data-selected="true"])').first()
+  const target = (await other.count()) > 0 ? other : selected
+
+  const key = await target.getAttribute("data-key")
+  if (!key) throw new Error("Failed to resolve model key from list item")
+
+  const name = (await target.locator("span").first().innerText()).trim()
+  const model = key.split(":").slice(1).join(":")
+
+  await input.fill(model)
+
+  const item = dialog.locator(`[data-slot="list-item"][data-key="${key}"]`)
+  await expect(item).toBeVisible()
+  await item.click()
+
+  await expect(dialog).toHaveCount(0)
+
+  const form = page.locator(promptSelector).locator("xpath=ancestor::form[1]")
+  await expect(form.locator('[data-component="button"]').filter({ hasText: name }).first()).toBeVisible()
+})