test(e2e): redo & undo test

packages/app/e2e/session/session-undo-redo.spec.ts

@@ -0,0 +1,126 @@
+import type { Page } from "@playwright/test"
+import { test, expect } from "../fixtures"
+import { withSession } from "../actions"
+import { createSdk, modKey } from "../utils"
+import { promptSelector } from "../selectors"
+
+async function seedConversation(input: {
+  page: Page
+  sdk: ReturnType<typeof createSdk>
+  sessionID: string
+  token: string
+}) {
+  const prompt = input.page.locator(promptSelector)
+  await expect(prompt).toBeVisible()
+  await prompt.click()
+  await input.page.keyboard.type(`Reply with exactly: ${input.token}`)
+  await input.page.keyboard.press("Enter")
+
+  let userMessageID: string | undefined
+  await expect
+    .poll(
+      async () => {
+        const messages = await input.sdk.session
+          .messages({ sessionID: input.sessionID, limit: 50 })
+          .then((r) => r.data ?? [])
+        const users = messages.filter((m) => m.info.role === "user")
+        if (users.length === 0) return false
+
+        const user = users.reduce((acc, item) => (item.info.id > acc.info.id ? item : acc))
+        userMessageID = user.info.id
+
+        const assistantText = messages
+          .filter((m) => m.info.role === "assistant")
+          .flatMap((m) => m.parts)
+          .filter((p) => p.type === "text")
+          .map((p) => p.text)
+          .join("\n")
+
+        return assistantText.includes(input.token)
+      },
+      { timeout: 90_000 },
+    )
+    .toBe(true)
+
+  if (!userMessageID) throw new Error("Expected a user message id")
+  return { prompt, userMessageID }
+}
+
+test("slash undo sets revert and restores prior prompt", async ({ page, withProject }) => {
+  test.setTimeout(120_000)
+
+  const token = `undo_${Date.now()}`
+
+  await withProject(async (project) => {
+    const sdk = createSdk(project.directory)
+
+    await withSession(sdk, `e2e undo ${Date.now()}`, async (session) => {
+      await project.gotoSession(session.id)
+
+      const seeded = await seedConversation({ page, sdk, sessionID: session.id, token })
+
+      await seeded.prompt.click()
+      await page.keyboard.type("/undo")
+
+      const undo = page.locator('[data-slash-id="session.undo"]').first()
+      await expect(undo).toBeVisible()
+      await page.keyboard.press("Enter")
+
+      await expect
+        .poll(async () => await sdk.session.get({ sessionID: session.id }).then((r) => r.data?.revert?.messageID), {
+          timeout: 30_000,
+        })
+        .toBe(seeded.userMessageID)
+
+      await expect(seeded.prompt).toContainText(token)
+      await expect(page.locator(`[data-message-id="${seeded.userMessageID}"]`)).toHaveCount(0)
+    })
+  })
+})
+
+test("slash redo clears revert and restores latest state", async ({ page, withProject }) => {
+  test.setTimeout(120_000)
+
+  const token = `redo_${Date.now()}`
+
+  await withProject(async (project) => {
+    const sdk = createSdk(project.directory)
+
+    await withSession(sdk, `e2e redo ${Date.now()}`, async (session) => {
+      await project.gotoSession(session.id)
+
+      const seeded = await seedConversation({ page, sdk, sessionID: session.id, token })
+
+      await seeded.prompt.click()
+      await page.keyboard.type("/undo")
+
+      const undo = page.locator('[data-slash-id="session.undo"]').first()
+      await expect(undo).toBeVisible()
+      await page.keyboard.press("Enter")
+
+      await expect
+        .poll(async () => await sdk.session.get({ sessionID: session.id }).then((r) => r.data?.revert?.messageID), {
+          timeout: 30_000,
+        })
+        .toBe(seeded.userMessageID)
+
+      await seeded.prompt.click()
+      await page.keyboard.press(`${modKey}+A`)
+      await page.keyboard.press("Backspace")
+      await page.keyboard.type("/redo")
+
+      const redo = page.locator('[data-slash-id="session.redo"]').first()
+      await expect(redo).toBeVisible()
+      await page.keyboard.press("Enter")
+
+      await expect
+        .poll(async () => await sdk.session.get({ sessionID: session.id }).then((r) => r.data?.revert?.messageID), {
+          timeout: 30_000,
+        })
+        .toBeUndefined()
+
+      await expect(seeded.prompt).not.toContainText(token)
+      await expect(page.locator(`[data-message-id="${seeded.userMessageID}"]`).first()).toBeVisible()
+    })
+  })
+})