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Code Issues 1 Packages Projects Releases Wiki Activity

Ability to list tracks on an album

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This commit is contained in:
simojenki
2021-03-08 11:26:24 +11:00
parent 07b00f00f2
commit 081819f12b
8 changed files with 361 additions and 76 deletions
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52
tests/in_memory_music_service.test.ts
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@@ -6,7 +6,7 @@ import {
albumToAlbumSummary,
} from "../src/music_service";
import { v4 as uuid } from "uuid";
import { anArtist, anAlbum } from "./builders";
import { anArtist, anAlbum, aTrack } from "./builders";
describe("InMemoryMusicService", () => {
const service = new InMemoryMusicService();
@@ -176,6 +176,34 @@ describe("InMemoryMusicService", () => {
});
});
describe("tracks", () => {
const artist1Album1 = anAlbum();
const artist1Album2 = anAlbum();
const artist1 = anArtist({ albums: [artist1Album1, artist1Album2] });
const track1 = aTrack({ album: artist1Album1, artist: artist1 });
const track2 = aTrack({ album: artist1Album1, artist: artist1 });
const track3 = aTrack({ album: artist1Album2, artist: artist1 });
const track4 = aTrack({ album: artist1Album2, artist: artist1 });
beforeEach(() => {
service.hasArtists(artist1);
service.hasTracks(track1, track2, track3, track4);
});
describe("fetching tracks for an album", () => {
it("should return only tracks on that album", async () => {
expect(await musicLibrary.tracks(artist1Album1.id)).toEqual([track1, track2])
});
});
describe("fetching tracks for an album that doesnt exist", () => {
it("should return empty array", async () => {
expect(await musicLibrary.tracks("non existant album id")).toEqual([])
});
});
});
describe("albums", () => {
const artist1_album1 = anAlbum({ genre: "Pop" });
const artist1_album2 = anAlbum({ genre: "Rock" });
@@ -332,8 +360,20 @@ describe("InMemoryMusicService", () => {
});
describe("genres", () => {
const artist1 = anArtist({ albums: [anAlbum({ genre: "Pop" }), anAlbum({ genre: "Rock" }), anAlbum({ genre: "Pop" })] });
const artist2 = anArtist({ albums: [anAlbum({ genre: "Hip-Hop" }), anAlbum({ genre: "Rap" }), anAlbum({ genre: "Pop" })] });
const artist1 = anArtist({
albums: [
anAlbum({ genre: "Pop" }),
anAlbum({ genre: "Rock" }),
anAlbum({ genre: "Pop" }),
],
});
const artist2 = anArtist({
albums: [
anAlbum({ genre: "Hip-Hop" }),
anAlbum({ genre: "Rap" }),
anAlbum({ genre: "Pop" }),
],
});
beforeEach(() => {
service.hasArtists(artist1, artist2);
@@ -341,13 +381,11 @@ describe("InMemoryMusicService", () => {
describe("fetching all in one page", () => {
it("should provide an array of artists", async () => {
expect(
await musicLibrary.genres()
).toEqual([
expect(await musicLibrary.genres()).toEqual([
"Hip-Hop",
"Pop",
"Rap",
"Rock"
"Rock",
]);
});
});