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code-server/test/unit/node/proxy.test.ts

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import bodyParser from "body-parser"
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import * as express from "express"
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import * as nodeFetch from "node-fetch"
import * as http from "http"
import { HttpCode } from "../../../src/common/http"
import { proxy } from "../../../src/node/proxy"
import * as httpserver from "../../utils/httpserver"
import * as integration from "../../utils/integration"
import { getAvailablePort } from "../../utils/helpers"
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describe("proxy", () => {
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const nhooyrDevServer = new httpserver.HttpServer()
let codeServer: httpserver.HttpServer | undefined
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let proxyPath: string
let absProxyPath: string
let e: express.Express
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beforeAll(async () => {
await nhooyrDevServer.listen((req, res) => {
e(req, res)
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})
proxyPath = `/proxy/${nhooyrDevServer.port()}/wsup`
absProxyPath = proxyPath.replace("/proxy/", "/absproxy/")
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})
afterAll(async () => {
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await nhooyrDevServer.close()
})
beforeEach(() => {
e = express.default()
})
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afterEach(async () => {
if (codeServer) {
await codeServer.close()
codeServer = undefined
}
})
it("should rewrite the base path", async () => {
e.get("/wsup", (req, res) => {
res.json("asher is the best")
})
codeServer = await integration.setup(["--auth=none"], "")
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const resp = await codeServer.fetch(proxyPath)
expect(resp.status).toBe(200)
const json = await resp.json()
expect(json).toBe("asher is the best")
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})
it("should not rewrite the base path", async () => {
e.get(absProxyPath, (req, res) => {
res.json("joe is the best")
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(absProxyPath)
expect(resp.status).toBe(200)
const json = await resp.json()
expect(json).toBe("joe is the best")
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})
it("should rewrite redirects", async () => {
e.post("/wsup", (req, res) => {
res.redirect(307, "/finale")
})
e.post("/finale", (req, res) => {
res.json("redirect success")
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(proxyPath, {
method: "POST",
})
expect(resp.status).toBe(200)
expect(await resp.json()).toBe("redirect success")
})
it("should not rewrite redirects", async () => {
const finalePath = absProxyPath.replace("/wsup", "/finale")
e.post(absProxyPath, (req, res) => {
res.redirect(307, finalePath)
})
e.post(finalePath, (req, res) => {
res.json("redirect success")
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(absProxyPath, {
method: "POST",
})
expect(resp.status).toBe(200)
expect(await resp.json()).toBe("redirect success")
})
it("should allow post bodies", async () => {
e.use(bodyParser.json({ strict: false }))
e.post("/wsup", (req, res) => {
res.json(req.body)
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(proxyPath, {
method: "post",
body: JSON.stringify("coder is the best"),
headers: {
"Content-Type": "application/json",
},
})
expect(resp.status).toBe(200)
expect(await resp.json()).toBe("coder is the best")
})
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it("should handle bad requests", async () => {
e.use(bodyParser.json({ strict: false }))
e.post("/wsup", (req, res) => {
res.json(req.body)
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(proxyPath, {
method: "post",
body: "coder is the best",
headers: {
"Content-Type": "application/json",
},
})
expect(resp.status).toBe(400)
expect(resp.statusText).toMatch("Bad Request")
})
it("should handle invalid routes", async () => {
e.post("/wsup", (req, res) => {
res.json(req.body)
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(`${proxyPath}/hello`)
expect(resp.status).toBe(404)
expect(resp.statusText).toMatch("Not Found")
})
it("should handle errors", async () => {
e.use(bodyParser.json({ strict: false }))
e.post("/wsup", (req, res) => {
throw new Error("BROKEN")
})
codeServer = await integration.setup(["--auth=none"], "")
const resp = await codeServer.fetch(proxyPath, {
method: "post",
body: JSON.stringify("coder is the best"),
headers: {
"Content-Type": "application/json",
},
})
expect(resp.status).toBe(500)
expect(resp.statusText).toMatch("Internal Server Error")
})
})
// NOTE@jsjoeio
// Both this test suite and the one above it are very similar
// The main difference is this one uses http and node-fetch
// and specifically tests the proxy in isolation vs. using
// the httpserver abstraction we've built.
//
// Leaving this as a separate test suite for now because
// we may consider refactoring the httpserver abstraction
// in the future.
//
// If you're writing a test specifically for code in
// src/node/proxy.ts, you should probably add it to
// this test suite.
describe("proxy (standalone)", () => {
let URL = ""
let PROXY_URL = ""
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let testServer: http.Server
let proxyTarget: http.Server
beforeEach(async () => {
const PORT = await getAvailablePort()
const PROXY_PORT = await getAvailablePort()
URL = `http://localhost:${PORT}`
PROXY_URL = `http://localhost:${PROXY_PORT}`
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// Define server and a proxy server
testServer = http.createServer((req, res) => {
proxy.web(req, res, {
target: PROXY_URL,
})
})
proxyTarget = http.createServer((req, res) => {
res.writeHead(200, { "Content-Type": "text/plain" })
res.end()
})
// Start both servers
await proxyTarget.listen(PROXY_PORT)
await testServer.listen(PORT)
})
afterEach(async () => {
await testServer.close()
await proxyTarget.close()
})
it("should return a 500 when proxy target errors ", async () => {
// Close the proxy target so that proxy errors
await proxyTarget.close()
const errorResp = await nodeFetch.default(`${URL}/error`)
expect(errorResp.status).toBe(HttpCode.ServerError)
expect(errorResp.statusText).toBe("Internal Server Error")
})
it("should proxy correctly", async () => {
const resp = await nodeFetch.default(`${URL}/route`)
expect(resp.status).toBe(200)
expect(resp.statusText).toBe("OK")
})
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})