Testing with Durable Objects
Write tests for Durable Objects.
import { unstable_dev } from "wrangler"import type { UnstableDevWorker } from "wrangler"import { describe, expect, it, beforeAll, afterAll } from "vitest"
describe("Worker", () => { let worker: UnstableDevWorker
beforeAll(async () => { worker = await unstable_dev("src/index.ts", { experimental: { disableExperimentalWarning: true }, }); });
afterAll(async () => { await worker.stop() })
it("should deny request for short paths", async () => { const cases = { failures: ["/", "/foo", "/foo/", "/%2F"], } for (const path of cases.failures) { const resp = await worker.fetch(`http://example.com${path}`) if (resp) { const text = await resp.text() expect(text).toMatchInlineSnapshot('"path must be at least 5 characters"') } } })
describe("durable object", () => { it("Should send text from a POST to a matching GET", async () => { const path = "/stuff1" const url = `http://example.com${path}`
// The get request should wait for the post request to complete const getResponsePromise = worker.fetch(url)
// The post request to the same path should receive a response that the text was consumed const postResponse = await worker.fetch(url, { method: "POST", body: "Hello World 12345" }) expect(postResponse.status).toBe(200) const postText = await postResponse.text() expect(postText).toBe("The text was consumed!")
// The get request should now receive the text const getResponse = await getResponsePromise expect(getResponse.status).toBe(200) const text = await getResponse.text() expect(text).toBe("Hello World 12345") })
it("Shouldn't send text from a POST to a different GET", async () => { const path1 = "/stuff1" const path2 = "/stuff2" const url = (p: string) => `http://example.com${p}`
// The get request should wait for the post request to complete const getResponsePromise1 = worker.fetch(url(path1)) const getResponsePromise2 = worker.fetch(url(path2))
// The post request to the same path should receive a response that the text was consumed const postResponse1 = await worker.fetch(url(path1), { method: "POST", body: "Hello World 12345" }) expect(postResponse1.status).toBe(200) const postText1 = await postResponse1.text() expect(postText1).toBe("The text was consumed!")
const postResponse2 = await worker.fetch(url(path2), { method: "POST", body: "Hello World 789" }) expect(postResponse2.status).toBe(200) const postText2 = await postResponse2.text() expect(postText2).toBe("The text was consumed!")
// The get request should now receive the text const getResponse1 = await getResponsePromise1 expect(getResponse1.status).toBe(200) const text1 = await getResponse1.text() expect(text1).toBe("Hello World 12345")
const getResponse2 = await getResponsePromise2 expect(getResponse2.status).toBe(200) const text2 = await getResponse2.text() expect(text2).toBe("Hello World 789") })
it("Should not send the same POST twice", async () => { const path = "/stuff1" const url = (p: string) => `http://example.com${p}`
// The get request should wait for the post request to complete const getResponsePromise1 = worker.fetch(url(path))
// The post request to the same path should receive a response that the text was consumed const postResponse1 = await worker.fetch(url(path), { method: "POST", body: "Hello World 12345" }) expect(postResponse1.status).toBe(200) const postText1 = await postResponse1.text() expect(postText1).toBe("The text was consumed!")
// The get request should now receive the text const getResponse1 = await getResponsePromise1 expect(getResponse1.status).toBe(200) const text1 = await getResponse1.text() expect(text1).toBe("Hello World 12345")
// The next get request should wait for the next post request to complete const getResponsePromise2 = worker.fetch(url(path))
// Send a new POST with different text const postResponse2 = await worker.fetch(url(path), { method: "POST", body: "Hello World 789" }) expect(postResponse2.status).toBe(200) const postText2 = await postResponse2.text() expect(postText2).toBe("The text was consumed!")
// The get request should receive the new text, not the old text const getResponse2 = await getResponsePromise2 expect(getResponse2.status).toBe(200) const text2 = await getResponse2.text() expect(text2).toBe("Hello World 789") }) })})
Find the full code for this example on GitHub.