test: Add test for rss

Signed-off-by: Tim Hårek Andreassen <tim@harek.no>

deno.json

@@ -6,7 +6,8 @@
   "tasks": {
     "start": "deno run -A --watch=static/,routes/ dev.ts",
     "check": "deno fmt --check && deno lint && deno check **/*.ts && deno check **/*.tsx",
-    "types:nrk": "deno run -A generate-types.ts && deno fmt ./lib"
+    "types:nrk": "deno run -A generate-types.ts && deno fmt ./lib",
+    "test": "deno test -A"
   },
   "unstable": [
     "kv"

lib/rss.test.ts

@@ -1,6 +1,14 @@
 import { assertEquals, assertExists } from "$std/assert/mod.ts";
 import { testUtils } from "./test-utils.ts";
 import { rss } from "./rss.ts";
+import { forTestingOnly } from "./rss.ts";
+
+// NOTE: Could probably be expanded upon.
+Deno.test("generate tag for episode", () => {
+  const episode = testUtils.generateEpisode();
+  const tag = forTestingOnly.assembleEpisode(episode, "someId");
+  assertExists(tag);
+});
 
 Deno.test("generated rss contains the series title", () => {
   const series = testUtils.generateSeries();

lib/rss.ts

@@ -1,8 +1,8 @@
-import { declaration, serialize, tag } from "serialize-xml";
+import { declaration, serialize, Tag, tag } from "serialize-xml";
 import { getHostName } from "../utils.ts";
 import { Episode, Series } from "./storage.ts";
 
-function assembleFeed(series: Series) {
+function assembleFeed(series: Series): string {
   // Originally adapted from https://raw.githubusercontent.com/olaven/paperpod/1cde9abd3174b26e126aa74fc5a3b63fd078c0fd/packages/converter/src/rss.ts
   return serialize(
     declaration([
@@ -44,7 +44,7 @@ function assembleFeed(series: Series) {
               ]),
             ]
             : []),
-          ...series.episodes.map((episode) => assembleEpisode({ series, episode })),
+          ...series.episodes.map((episode) => assembleEpisode(episode, series.id)),
         ]),
       ],
       [
@@ -57,9 +57,7 @@ function assembleFeed(series: Series) {
   );
 }
 
-function assembleEpisode(options: { series: Series; episode: Episode }) {
-  const { series, episode } = options;
-
+function assembleEpisode(episode: Episode, seriesId: Series["id"]): Tag {
   const description = episode.subtitle || "";
 
   return tag("item", [
@@ -73,7 +71,7 @@ function assembleEpisode(options: { series: Series; episode: Episode }) {
     tag("podcast:chapters", "", [
       [
         "url",
-        `${getHostName()}/api/feeds/${series.id}/${episode.id}/chapters`,
+        `${getHostName()}/api/feeds/${seriesId}/${episode.id}/chapters`,
       ],
       ["type", "application/json+chapters"],
     ]),
@@ -88,3 +86,7 @@ function assembleEpisode(options: { series: Series; episode: Episode }) {
 export const rss = {
   assembleFeed,
 };
+
+export const forTestingOnly = {
+  assembleEpisode,
+};

lib/test-utils.ts

@@ -1,5 +1,5 @@
 import { fakerNB_NO as faker } from "npm:@faker-js/faker";
-import { Series } from "./storage.ts";
+import { Episode, Series } from "./storage.ts";
 
 function generateSeries(overrides: Partial<Series> = {}): Series {
   return {
@@ -10,24 +10,28 @@ function generateSeries(overrides: Partial<Series> = {}): Series {
     imageUrl: faker.image.url(),
     lastFetchedAt: faker.date.recent(),
     episodes: new Array(faker.number.int({ min: 0, max: 100 }))
-      .fill(null).map(() => ({
-        title: faker.word.words(3),
-        subtitle: faker.word.words(3),
-        link: faker.internet.url(),
-        url: faker.internet.url(),
-        shareLink: faker.internet.url(),
-        description: faker.lorem.paragraphs(2),
-        id: faker.string.uuid(),
-        date: faker.date.recent(),
-        durationInSeconds: faker.number.int({
-          min: 0,
-          max: 3600,
-        }),
-        ...overrides,
-      })),
+      .fill(null).map(() => (generateEpisode(overrides))),
+  };
+}
+
+function generateEpisode(overrides: Partial<Series> = {}): Episode {
+  return {
+    title: faker.word.words(3),
+    subtitle: faker.word.words(3),
+    link: faker.internet.url(),
+    url: faker.internet.url(),
+    shareLink: faker.internet.url(),
+    id: faker.string.uuid(),
+    date: faker.date.recent(),
+    durationInSeconds: faker.number.int({
+      min: 0,
+      max: 3600,
+    }),
+    ...overrides,
   };
 }
 
 export const testUtils = {
   generateSeries,
+  generateEpisode,
 };