feat(httpapi): bridge event stream (#24518)

packages/opencode/test/server/httpapi-event.test.ts

@@ -0,0 +1,52 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import type { UpgradeWebSocket } from "hono/ws"
+import { Flag } from "@opencode-ai/core/flag/flag"
+import { Instance } from "../../src/project/instance"
+import { InstanceRoutes } from "../../src/server/routes/instance"
+import { EventPaths } from "../../src/server/routes/instance/httpapi/event"
+import { Log } from "../../src/util"
+import { resetDatabase } from "../fixture/db"
+import { tmpdir } from "../fixture/fixture"
+
+void Log.init({ print: false })
+
+const original = Flag.OPENCODE_EXPERIMENTAL_HTTPAPI
+const websocket = (() => () => new Response(null, { status: 501 })) as unknown as UpgradeWebSocket
+
+function app() {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = true
+  return InstanceRoutes(websocket)
+}
+
+async function readFirstChunk(response: Response) {
+  if (!response.body) throw new Error("missing response body")
+  const reader = response.body.getReader()
+  const result = await Promise.race([
+    reader.read(),
+    new Promise<never>((_, reject) => setTimeout(() => reject(new Error("timed out waiting for event")), 5_000)),
+  ])
+  await reader.cancel()
+  return new TextDecoder().decode(result.value)
+}
+
+afterEach(async () => {
+  Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = original
+  await Instance.disposeAll()
+  await resetDatabase()
+})
+
+describe("event HttpApi bridge", () => {
+  test("serves event stream through experimental Effect route", async () => {
+    await using tmp = await tmpdir({ git: true, config: { formatter: false, lsp: false } })
+    const response = await app().request(EventPaths.event, { headers: { "x-opencode-directory": tmp.path } })
+
+    expect(response.status).toBe(200)
+    expect(response.headers.get("content-type")).toContain("text/event-stream")
+    expect(response.headers.get("cache-control")).toBe("no-cache, no-transform")
+    expect(response.headers.get("x-accel-buffering")).toBe("no")
+    expect(response.headers.get("x-content-type-options")).toBe("nosniff")
+    expect(await readFirstChunk(response)).toContain(
+      'data: {"type":"server.connected","properties":{}}\n\n',
+    )
+  })
+})