kill-the-newsletter/src/index.test.ts

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import { beforeAll, afterAll, describe, test, expect } from "@jest/globals";
import os from "os";
import path from "path";
import http from "http";
import net from "net";
import fs from "fs";
import * as got from "got";
import nodemailer from "nodemailer";
import killTheNewsletter from ".";
let webServer: http.Server;
let emailServer: net.Server;
let webClient: got.Got;
let emailClient: nodemailer.Transporter;
beforeAll(() => {
const rootDirectory = fs.mkdtempSync(
path.join(os.tmpdir(), "kill-the-newsletter--test--")
);
const { webApplication, emailApplication } = killTheNewsletter(rootDirectory);
webServer = webApplication.listen(new URL(webApplication.get("url")).port);
emailServer = emailApplication.listen(
new URL(webApplication.get("email")).port
);
webClient = got.default.extend({ prefixUrl: webApplication.get("url") });
emailClient = nodemailer.createTransport(webApplication.get("email"));
});
afterAll(() => {
webServer.close();
emailServer.close();
});
test("create feed", async () => {
const identifier = await createFeed();
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
const alternate = await getAlternate(
entry.querySelector("link")!.getAttribute("href")!
);
expect(feed.querySelector("feed > title")!.textContent).toBe("My Feed");
expect(entry.querySelector("title")!.textContent).toBe(
"“My Feed” Inbox Created"
);
expect(alternate.querySelector("p")!.textContent).toMatch(
"Sign up for the newsletter with"
);
});
describe("receive email", () => {
test("updated field is updated", async () => {
const identifier = await createFeed();
const before = await getFeed(identifier);
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
html: "<p>HTML content</p>",
});
const after = await getFeed(identifier);
expect(after.querySelector("feed > updated")!.textContent).not.toBe(
before.querySelector("feed > updated")!.textContent
);
});
test("HTML content", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
html: "<p>HTML content</p>",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
const alternate = await getAlternate(
entry.querySelector("link")!.getAttribute("href")!
);
expect(entry.querySelector("author > name")!.textContent).toBe(
"publisher@example.com"
);
expect(entry.querySelector("title")!.textContent).toBe("New Message");
expect(entry.querySelector("content")!.textContent).toMatch("HTML content");
expect(alternate.querySelector("p")!.textContent).toMatch("HTML content");
});
test("text content", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
text: "TEXT content",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
const alternate = await getAlternate(
entry.querySelector("link")!.getAttribute("href")!
);
expect(entry.querySelector("content")!.textContent).toMatch("TEXT content");
expect(alternate.querySelector("p")!.textContent).toMatch("TEXT content");
});
test("rich text content", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
text: "TEXT content\n\nhttps://leafac.com\n\nMore text",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
const alternate = await getAlternate(
entry.querySelector("link")!.getAttribute("href")!
);
expect(alternate.querySelector("a")!.getAttribute("href")).toBe(
"https://leafac.com"
);
});
test("invalid XML character in HTML", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
html: "<p>Invalid XML character (backspace): |\b|💩</p>",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
expect(entry.querySelector("content")!.textContent).toMatchInlineSnapshot(`
"<p>Invalid XML character (backspace): ||💩</p>
"
`);
});
test("invalid XML character in text", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
text: "Invalid XML character (backspace): |\b|💩",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
expect(entry.querySelector("content")!.textContent).toMatchInlineSnapshot(
`"<p>Invalid XML character (backspace): |&#x8;|&#x1F4A9;</p>"`
);
});
test("missing from", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
html: "<p>HTML content</p>",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
expect(entry.querySelector("author > name")!.textContent).toBe("");
expect(entry.querySelector("title")!.textContent).toBe("New Message");
});
test("nonexistent to", async () => {
await emailClient.sendMail({
from: "publisher@example.com",
to: `nonexistent@${EMAIL_DOMAIN}`,
subject: "New Message",
html: "<p>HTML content</p>",
});
});
test("missing subject", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
html: "<p>HTML content</p>",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
expect(entry.querySelector("title")!.textContent).toBe("");
expect(entry.querySelector("author > name")!.textContent).toBe(
"publisher@example.com"
);
});
test("missing content", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
expect(entry.querySelector("content")!.textContent!.trim()).toBe("");
expect(entry.querySelector("title")!.textContent).toBe("New Message");
});
test("truncation", async () => {
const identifier = await createFeed();
const alternatesURLs = new Array<string>();
for (const repetition of [...new Array(4).keys()]) {
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
text: `REPETITION ${repetition} `.repeat(10_000),
});
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
alternatesURLs.push(entry.querySelector("link")!.getAttribute("href")!);
}
const feed = await getFeed(identifier);
expect(
feed.querySelector("entry:first-of-type > content")!.textContent
).toMatch("REPETITION 3");
expect(
feed.querySelector("entry:last-of-type > content")!.textContent
).toMatch("REPETITION 1");
expect((await getAlternate(alternatesURLs[3]!)).textContent).toMatch(
"REPETITION 3"
);
await expect(getAlternate(alternatesURLs[0]!)).rejects.toThrowError();
});
test("too big entry", async () => {
const identifier = await createFeed();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
text: "TOO BIG".repeat(100_000),
});
expect((await getFeed(identifier)).querySelector("entry")).toBeNull();
await emailClient.sendMail({
from: "publisher@example.com",
to: `${identifier}@${EMAIL_DOMAIN}`,
subject: "New Message",
text: `NORMAL SIZE`,
});
expect(
(await getFeed(identifier)).querySelector("entry > content")!.textContent
).toMatchInlineSnapshot(`"<p>NORMAL SIZE</p>"`);
});
});
test("noindex header", async () => {
const identifier = await createFeed();
const feed = await getFeed(identifier);
const entry = feed.querySelector("feed > entry:first-of-type")!;
const alternatePath = entry.querySelector("link")!.getAttribute("href")!;
expect((await webClient.get(`/`)).headers["x-robots-tag"]).toBeUndefined();
expect(
(await webClient.get(`/feeds/${identifier}.xml`)).headers["x-robots-tag"]
).toBe("noindex");
expect((await webClient.get(alternatePath)).headers["x-robots-tag"]).toBe(
"noindex"
);
});
afterAll(() => {
webServer.close();
emailServer.close();
});
async function createFeed(): Promise<string> {
return JSDOM.fragment(
(
await webClient.post(
"/",
qs.stringify({
name: "My Feed",
})
)
).data
)
.querySelector("code")!
.textContent!.split("@")[0];
}
async function getFeed(identifier: string): Promise<Document> {
return new JSDOM((await webClient.get(`/feeds/${identifier}.xml`)).data, {
contentType: "text/xml",
}).window.document;
}
async function getAlternate(url: string): Promise<DocumentFragment> {
return JSDOM.fragment((await webClient.get(url)).data);
}