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test: finish HTTP mock processor coverage (#20372)
This commit is contained in:
Kit Langton
@@ -1,31 +1,12 @@
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import { NodeHttpServer } from "@effect/platform-node"
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import { NodeHttpServer, NodeHttpServerRequest } from "@effect/platform-node"
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import * as Http from "node:http"
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import { Deferred, Effect, Layer, ServiceMap, Stream } from "effect"
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import * as HttpServer from "effect/unstable/http/HttpServer"
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import { HttpRouter, HttpServerRequest, HttpServerResponse } from "effect/unstable/http"
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type Step =
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| {
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type: "text"
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text: string
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}
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| {
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type: "tool"
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tool: string
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input: unknown
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}
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| {
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type: "fail"
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message: string
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}
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| {
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type: "hang"
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}
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| {
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type: "hold"
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text: string
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wait: PromiseLike<unknown>
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}
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export type Usage = { input: number; output: number }
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type Line = Record<string, unknown>
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type Hit = {
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url: URL
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@@ -37,147 +18,293 @@ type Wait = {
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ready: Deferred.Deferred<void>
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}
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function sse(lines: unknown[]) {
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return HttpServerResponse.stream(
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Stream.fromIterable([
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[...lines.map((line) => `data: ${JSON.stringify(line)}`), "data: [DONE]"].join("\n\n") + "\n\n",
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]).pipe(Stream.encodeText),
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{ contentType: "text/event-stream" },
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)
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type Sse = {
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type: "sse"
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head: unknown[]
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tail: unknown[]
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wait?: PromiseLike<unknown>
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hang?: boolean
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error?: unknown
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reset?: boolean
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}
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function text(step: Extract<Step, { type: "text" }>) {
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return sse([
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: { role: "assistant" } }],
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},
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: { content: step.text } }],
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},
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: {}, finish_reason: "stop" }],
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},
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])
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type HttpError = {
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type: "http-error"
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status: number
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body: unknown
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}
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function tool(step: Extract<Step, { type: "tool" }>, seq: number) {
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const id = `call_${seq}`
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const args = JSON.stringify(step.input)
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return sse([
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: { role: "assistant" } }],
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},
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [
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export type Item = Sse | HttpError
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const done = Symbol("done")
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function line(input: unknown) {
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if (input === done) return "data: [DONE]\n\n"
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return `data: ${JSON.stringify(input)}\n\n`
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}
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function tokens(input?: Usage) {
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if (!input) return
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return {
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prompt_tokens: input.input,
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completion_tokens: input.output,
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total_tokens: input.input + input.output,
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}
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}
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function chunk(input: { delta?: Record<string, unknown>; finish?: string; usage?: Usage }) {
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return {
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [
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{
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delta: input.delta ?? {},
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...(input.finish ? { finish_reason: input.finish } : {}),
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},
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],
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...(input.usage ? { usage: tokens(input.usage) } : {}),
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} satisfies Line
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}
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function role() {
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return chunk({ delta: { role: "assistant" } })
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}
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function textLine(value: string) {
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return chunk({ delta: { content: value } })
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}
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function reasonLine(value: string) {
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return chunk({ delta: { reasoning_content: value } })
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}
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function finishLine(reason: string, usage?: Usage) {
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return chunk({ finish: reason, usage })
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}
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function toolStartLine(id: string, name: string) {
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return chunk({
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delta: {
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tool_calls: [
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{
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delta: {
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tool_calls: [
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{
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index: 0,
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id,
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type: "function",
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function: {
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name: step.tool,
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arguments: "",
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},
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},
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],
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index: 0,
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id,
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type: "function",
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function: {
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name,
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arguments: "",
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},
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},
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],
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},
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [
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})
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}
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function toolArgsLine(value: string) {
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return chunk({
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delta: {
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tool_calls: [
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{
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delta: {
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tool_calls: [
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{
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index: 0,
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function: {
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arguments: args,
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},
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},
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],
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index: 0,
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function: {
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arguments: value,
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},
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},
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],
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},
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{
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: {}, finish_reason: "tool_calls" }],
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},
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])
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})
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}
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function fail(step: Extract<Step, { type: "fail" }>) {
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return HttpServerResponse.stream(
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Stream.fromIterable([
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'data: {"id":"chatcmpl-test","object":"chat.completion.chunk","choices":[{"delta":{"role":"assistant"}}]}\n\n',
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]).pipe(Stream.encodeText, Stream.concat(Stream.fail(new Error(step.message)))),
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{ contentType: "text/event-stream" },
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)
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function bytes(input: Iterable<unknown>) {
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return Stream.fromIterable([...input].map(line)).pipe(Stream.encodeText)
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}
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function hang() {
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return HttpServerResponse.stream(
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Stream.fromIterable([
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'data: {"id":"chatcmpl-test","object":"chat.completion.chunk","choices":[{"delta":{"role":"assistant"}}]}\n\n',
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]).pipe(Stream.encodeText, Stream.concat(Stream.never)),
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{ contentType: "text/event-stream" },
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)
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function send(item: Sse) {
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const head = bytes(item.head)
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const tail = bytes([...item.tail, ...(item.hang || item.error ? [] : [done])])
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const empty = Stream.fromIterable<Uint8Array>([])
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const wait = item.wait
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const body: Stream.Stream<Uint8Array, unknown> = wait
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? Stream.concat(head, Stream.fromEffect(Effect.promise(() => wait)).pipe(Stream.flatMap(() => tail)))
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: Stream.concat(head, tail)
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let end: Stream.Stream<Uint8Array, unknown> = empty
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if (item.error) end = Stream.concat(empty, Stream.fail(item.error))
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else if (item.hang) end = Stream.concat(empty, Stream.never)
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return HttpServerResponse.stream(Stream.concat(body, end), { contentType: "text/event-stream" })
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}
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function hold(step: Extract<Step, { type: "hold" }>) {
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return HttpServerResponse.stream(
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Stream.fromIterable([
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'data: {"id":"chatcmpl-test","object":"chat.completion.chunk","choices":[{"delta":{"role":"assistant"}}]}\n\n',
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]).pipe(
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Stream.encodeText,
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Stream.concat(
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Stream.fromEffect(Effect.promise(() => step.wait)).pipe(
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Stream.flatMap(() =>
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Stream.fromIterable([
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`data: ${JSON.stringify({
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: { content: step.text } }],
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})}\n\n`,
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`data: ${JSON.stringify({
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id: "chatcmpl-test",
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object: "chat.completion.chunk",
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choices: [{ delta: {}, finish_reason: "stop" }],
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})}\n\n`,
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"data: [DONE]\n\n",
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]).pipe(Stream.encodeText),
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),
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),
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),
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),
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{ contentType: "text/event-stream" },
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)
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const reset = Effect.fn("TestLLMServer.reset")(function* (item: Sse) {
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const req = yield* HttpServerRequest.HttpServerRequest
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const res = NodeHttpServerRequest.toServerResponse(req)
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yield* Effect.sync(() => {
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res.writeHead(200, { "content-type": "text/event-stream" })
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for (const part of item.head) res.write(line(part))
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for (const part of item.tail) res.write(line(part))
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res.destroy(new Error("connection reset"))
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})
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yield* Effect.never
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})
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function fail(item: HttpError) {
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return HttpServerResponse.text(JSON.stringify(item.body), {
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status: item.status,
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contentType: "application/json",
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})
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}
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export class Reply {
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#head: unknown[] = [role()]
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#tail: unknown[] = []
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#usage: Usage | undefined
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#finish: string | undefined
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#wait: PromiseLike<unknown> | undefined
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#hang = false
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#error: unknown
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#reset = false
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#seq = 0
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#id() {
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this.#seq += 1
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return `call_${this.#seq}`
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}
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text(value: string) {
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this.#tail = [...this.#tail, textLine(value)]
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return this
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}
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reason(value: string) {
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this.#tail = [...this.#tail, reasonLine(value)]
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return this
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}
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usage(value: Usage) {
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this.#usage = value
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return this
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}
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wait(value: PromiseLike<unknown>) {
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this.#wait = value
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return this
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}
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stop() {
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this.#finish = "stop"
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this.#hang = false
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this.#error = undefined
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this.#reset = false
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return this
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}
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toolCalls() {
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this.#finish = "tool_calls"
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this.#hang = false
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this.#error = undefined
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this.#reset = false
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return this
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}
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tool(name: string, input: unknown) {
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const id = this.#id()
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const args = JSON.stringify(input)
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this.#tail = [...this.#tail, toolStartLine(id, name), toolArgsLine(args)]
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return this.toolCalls()
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}
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pendingTool(name: string, input: unknown) {
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const id = this.#id()
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const args = JSON.stringify(input)
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const size = Math.max(1, Math.floor(args.length / 2))
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this.#tail = [...this.#tail, toolStartLine(id, name), toolArgsLine(args.slice(0, size))]
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return this
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}
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hang() {
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this.#finish = undefined
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this.#hang = true
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this.#error = undefined
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this.#reset = false
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return this
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}
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streamError(error: unknown = "boom") {
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this.#finish = undefined
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this.#hang = false
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this.#error = error
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this.#reset = false
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return this
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}
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reset() {
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this.#finish = undefined
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this.#hang = false
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this.#error = undefined
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this.#reset = true
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return this
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}
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item(): Item {
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return {
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type: "sse",
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head: this.#head,
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tail: this.#finish ? [...this.#tail, finishLine(this.#finish, this.#usage)] : this.#tail,
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wait: this.#wait,
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hang: this.#hang,
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error: this.#error,
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reset: this.#reset,
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}
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}
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}
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export function reply() {
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return new Reply()
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}
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export function httpError(status: number, body: unknown): Item {
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return {
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type: "http-error",
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status,
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body,
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}
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}
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export function raw(input: {
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chunks?: unknown[]
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head?: unknown[]
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tail?: unknown[]
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wait?: PromiseLike<unknown>
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hang?: boolean
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error?: unknown
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reset?: boolean
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}): Item {
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return {
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type: "sse",
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head: input.head ?? input.chunks ?? [],
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tail: input.tail ?? [],
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wait: input.wait,
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hang: input.hang,
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error: input.error,
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reset: input.reset,
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}
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}
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function item(input: Item | Reply) {
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return input instanceof Reply ? input.item() : input
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}
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namespace TestLLMServer {
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export interface Service {
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readonly url: string
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readonly text: (value: string) => Effect.Effect<void>
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readonly tool: (tool: string, input: unknown) => Effect.Effect<void>
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readonly fail: (message?: string) => Effect.Effect<void>
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readonly push: (...input: (Item | Reply)[]) => Effect.Effect<void>
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readonly text: (value: string, opts?: { usage?: Usage }) => Effect.Effect<void>
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readonly tool: (name: string, input: unknown) => Effect.Effect<void>
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readonly toolHang: (name: string, input: unknown) => Effect.Effect<void>
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readonly reason: (value: string, opts?: { text?: string; usage?: Usage }) => Effect.Effect<void>
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readonly fail: (message?: unknown) => Effect.Effect<void>
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readonly error: (status: number, body: unknown) => Effect.Effect<void>
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readonly hang: Effect.Effect<void>
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readonly hold: (text: string, wait: PromiseLike<unknown>) => Effect.Effect<void>
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readonly hold: (value: string, wait: PromiseLike<unknown>) => Effect.Effect<void>
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readonly hits: Effect.Effect<Hit[]>
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readonly calls: Effect.Effect<number>
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readonly wait: (count: number) => Effect.Effect<void>
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@@ -194,12 +321,11 @@ export class TestLLMServer extends ServiceMap.Service<TestLLMServer, TestLLMServ
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const router = yield* HttpRouter.HttpRouter
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let hits: Hit[] = []
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let list: Step[] = []
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let seq = 0
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let list: Item[] = []
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let waits: Wait[] = []
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const push = (step: Step) => {
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list = [...list, step]
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const queue = (...input: (Item | Reply)[]) => {
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list = [...list, ...input.map(item)]
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}
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const notify = Effect.fnUntraced(function* () {
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@@ -210,11 +336,10 @@ export class TestLLMServer extends ServiceMap.Service<TestLLMServer, TestLLMServ
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})
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const pull = () => {
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const step = list[0]
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if (!step) return { step: undefined, seq }
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seq += 1
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const first = list[0]
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if (!first) return
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list = list.slice(1)
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return { step, seq }
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return first
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}
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yield* router.add(
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@@ -223,21 +348,22 @@ export class TestLLMServer extends ServiceMap.Service<TestLLMServer, TestLLMServ
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Effect.gen(function* () {
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const req = yield* HttpServerRequest.HttpServerRequest
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const next = pull()
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if (!next.step) return HttpServerResponse.text("unexpected request", { status: 500 })
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const json = yield* req.json.pipe(Effect.orElseSucceed(() => ({})))
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if (!next) return HttpServerResponse.text("unexpected request", { status: 500 })
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const body = yield* req.json.pipe(Effect.orElseSucceed(() => ({})))
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hits = [
|
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...hits,
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{
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url: new URL(req.originalUrl, "http://localhost"),
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body: json && typeof json === "object" ? (json as Record<string, unknown>) : {},
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body: body && typeof body === "object" ? (body as Record<string, unknown>) : {},
|
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},
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]
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yield* notify()
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if (next.step.type === "text") return text(next.step)
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||||
if (next.step.type === "tool") return tool(next.step, next.seq)
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||||
if (next.step.type === "fail") return fail(next.step)
|
||||
if (next.step.type === "hang") return hang()
|
||||
return hold(next.step)
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||||
if (next.type === "sse" && next.reset) {
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yield* reset(next)
|
||||
return HttpServerResponse.empty()
|
||||
}
|
||||
if (next.type === "sse") return send(next)
|
||||
return fail(next)
|
||||
}),
|
||||
)
|
||||
|
||||
@@ -248,20 +374,37 @@ export class TestLLMServer extends ServiceMap.Service<TestLLMServer, TestLLMServ
|
||||
server.address._tag === "TcpAddress"
|
||||
? `http://127.0.0.1:${server.address.port}/v1`
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||||
: `unix://${server.address.path}/v1`,
|
||||
text: Effect.fn("TestLLMServer.text")(function* (value: string) {
|
||||
push({ type: "text", text: value })
|
||||
push: Effect.fn("TestLLMServer.push")(function* (...input: (Item | Reply)[]) {
|
||||
queue(...input)
|
||||
}),
|
||||
tool: Effect.fn("TestLLMServer.tool")(function* (tool: string, input: unknown) {
|
||||
push({ type: "tool", tool, input })
|
||||
text: Effect.fn("TestLLMServer.text")(function* (value: string, opts?: { usage?: Usage }) {
|
||||
const out = reply().text(value)
|
||||
if (opts?.usage) out.usage(opts.usage)
|
||||
queue(out.stop().item())
|
||||
}),
|
||||
fail: Effect.fn("TestLLMServer.fail")(function* (message = "boom") {
|
||||
push({ type: "fail", message })
|
||||
tool: Effect.fn("TestLLMServer.tool")(function* (name: string, input: unknown) {
|
||||
queue(reply().tool(name, input).item())
|
||||
}),
|
||||
toolHang: Effect.fn("TestLLMServer.toolHang")(function* (name: string, input: unknown) {
|
||||
queue(reply().pendingTool(name, input).hang().item())
|
||||
}),
|
||||
reason: Effect.fn("TestLLMServer.reason")(function* (value: string, opts?: { text?: string; usage?: Usage }) {
|
||||
const out = reply().reason(value)
|
||||
if (opts?.text) out.text(opts.text)
|
||||
if (opts?.usage) out.usage(opts.usage)
|
||||
queue(out.stop().item())
|
||||
}),
|
||||
fail: Effect.fn("TestLLMServer.fail")(function* (message: unknown = "boom") {
|
||||
queue(reply().streamError(message).item())
|
||||
}),
|
||||
error: Effect.fn("TestLLMServer.error")(function* (status: number, body: unknown) {
|
||||
queue(httpError(status, body))
|
||||
}),
|
||||
hang: Effect.gen(function* () {
|
||||
push({ type: "hang" })
|
||||
queue(reply().hang().item())
|
||||
}).pipe(Effect.withSpan("TestLLMServer.hang")),
|
||||
hold: Effect.fn("TestLLMServer.hold")(function* (text: string, wait: PromiseLike<unknown>) {
|
||||
push({ type: "hold", text, wait })
|
||||
hold: Effect.fn("TestLLMServer.hold")(function* (value: string, wait: PromiseLike<unknown>) {
|
||||
queue(reply().wait(wait).text(value).stop().item())
|
||||
}),
|
||||
hits: Effect.sync(() => [...hits]),
|
||||
calls: Effect.sync(() => hits.length),
|
||||
@@ -275,8 +418,5 @@ export class TestLLMServer extends ServiceMap.Service<TestLLMServer, TestLLMServ
|
||||
pending: Effect.sync(() => list.length),
|
||||
})
|
||||
}),
|
||||
).pipe(
|
||||
Layer.provide(HttpRouter.layer), //
|
||||
Layer.provide(NodeHttpServer.layer(() => Http.createServer(), { port: 0 })),
|
||||
)
|
||||
).pipe(Layer.provide(HttpRouter.layer), Layer.provide(NodeHttpServer.layer(() => Http.createServer(), { port: 0 })))
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user