novelly/tests/Novelly.Api.Tests/GenreServiceTests.cs

using Novelly.Api.Novels;

namespace Novelly.Api.Tests;

[TestFixture]
public class GenreServiceTests : ServiceTestFixture
{
    [Test]
    public async Task The_genre_list_arrives_seeded_and_alphabetical()
    {
        var listed = await Genres.ListAsync();

        Assert.Multiple(() =>
        {
            Assert.That(listed, Is.Not.Empty);
            Assert.That(listed.Select(g => g.Name), Has.Member("Fantasy").And.Member("Literary Fiction"));
            Assert.That(listed.Select(g => g.Name), Is.Ordered);
            Assert.That(listed.Select(g => g.Id), Is.Unique);
        });
    }

    [Test]
    public async Task A_novel_can_be_filed_under_a_genre_off_the_list()
    {
        var fantasy = (await Genres.ListAsync()).First(g => g.Name == "Fantasy");

        var novel = await Novels.CreateAsync(new CreateNovelRequest("The Salt Road", Genre: fantasy.Name));

        Assert.That(novel.Genre, Is.EqualTo("Fantasy"));
    }

    [Test]
    public async Task A_novel_can_still_carry_a_genre_that_is_not_on_the_list()
    {
        var novel = await Novels.CreateAsync(
            new CreateNovelRequest("The Salt Road", Genre: "Nautical Gothic"));

        Assert.Multiple(async () =>
        {
            Assert.That(novel.Genre, Is.EqualTo("Nautical Gothic"));
            Assert.That((await Genres.ListAsync()).Select(g => g.Name), Has.No.Member("Nautical Gothic"));
        });
    }
}