novelly/tests/NovelSoftware.Tests/ProjectDataTests.cs

using Microsoft.EntityFrameworkCore;
using NovelSoftware.Application;
using NovelSoftware.Application.Dtos;
using NovelSoftware.Domain;

namespace NovelSoftware.Tests;

[TestFixture]
public class ProjectDataTests : ServiceTestFixture
{
    private async Task<Guid> NewProjectAsync() =>
        (await Projects.CreateAsync(new CreateProjectRequest("The Salt Road"))).Id;

    [Test]
    public async Task Updating_leaves_omitted_fields_alone_and_clears_on_empty_string()
    {
        var id = (await Projects.CreateAsync(
            new CreateProjectRequest("Draft", Genre: "Fantasy", Logline: "A cartographer goes to sea."))).Id;

        var afterPartialUpdate = await Projects.UpdateAsync(id, new UpdateProjectRequest(Title: "The Salt Road"));

        Assert.Multiple(() =>
        {
            Assert.That(afterPartialUpdate.Title, Is.EqualTo("The Salt Road"));
            Assert.That(afterPartialUpdate.Genre, Is.EqualTo("Fantasy"));
            Assert.That(afterPartialUpdate.Logline, Is.EqualTo("A cartographer goes to sea."));
        });

        var afterClear = await Projects.UpdateAsync(id, new UpdateProjectRequest(Genre: ""));

        Assert.Multiple(() =>
        {
            Assert.That(afterClear.Genre, Is.Null);
            Assert.That(afterClear.Logline, Is.EqualTo("A cartographer goes to sea."));
        });
    }

    [Test]
    public async Task Chapters_are_numbered_in_sequence_when_no_number_is_given()
    {
        var projectId = await NewProjectAsync();

        var first = await Chapters.CreateAsync(projectId, new CreateChapterRequest("Landfall"));
        var second = await Chapters.CreateAsync(projectId, new CreateChapterRequest("The Harbour"));

        Assert.Multiple(() =>
        {
            Assert.That(first.Number, Is.EqualTo(1));
            Assert.That(second.Number, Is.EqualTo(2));
        });
    }

    [Test]
    public async Task Word_count_is_recomputed_whenever_prose_changes()
    {
        var projectId = await NewProjectAsync();
        var chapter = await Chapters.CreateAsync(projectId, new CreateChapterRequest("Landfall"));

        var scene = await Scenes.CreateAsync(chapter.Id, new CreateSceneRequest(
            "The dock at dawn", Prose: "Five words go right here"));

        Assert.That(scene.WordCount, Is.EqualTo(5));

        var rewritten = await Scenes.UpdateAsync(scene.Id, new UpdateSceneRequest(
            Prose: "Now\nthere  are   seven words in total"));

        Assert.That(rewritten.WordCount, Is.EqualTo(7));

        var cleared = await Scenes.UpdateAsync(scene.Id, new UpdateSceneRequest(Prose: ""));

        Assert.Multiple(() =>
        {
            Assert.That(cleared.Prose, Is.Null);
            Assert.That(cleared.WordCount, Is.EqualTo(0));
        });
    }

    [Test]
    public async Task Scene_updates_that_omit_prose_leave_the_draft_untouched()
    {
        var projectId = await NewProjectAsync();
        var chapter = await Chapters.CreateAsync(projectId, new CreateChapterRequest("Landfall"));
        var scene = await Scenes.CreateAsync(chapter.Id, new CreateSceneRequest(
            "The dock at dawn", Prose: "The tide came in slow."));

        var updated = await Scenes.UpdateAsync(scene.Id, new UpdateSceneRequest(Status: DraftStatus.Revised));

        Assert.Multiple(() =>
        {
            Assert.That(updated.Prose, Is.EqualTo("The tide came in slow."));
            Assert.That(updated.WordCount, Is.EqualTo(5));
            Assert.That(updated.Status, Is.EqualTo(DraftStatus.Revised));
        });
    }

    [Test]
    public async Task Deleting_a_project_takes_its_characters_chapters_and_scenes()
    {
        var projectId = await NewProjectAsync();
        await Characters.CreateAsync(projectId, new CreateCharacterRequest("Ines"));
        var chapter = await Chapters.CreateAsync(projectId, new CreateChapterRequest("Landfall"));
        await Scenes.CreateAsync(chapter.Id, new CreateSceneRequest("The dock at dawn"));

        await Projects.DeleteAsync(projectId);

        using var verification = Db.CreateContext();

        Assert.Multiple(async () =>
        {
            Assert.That(await verification.Projects.CountAsync(), Is.EqualTo(0));
            Assert.That(await verification.Characters.CountAsync(), Is.EqualTo(0));
            Assert.That(await verification.Chapters.CountAsync(), Is.EqualTo(0));
            Assert.That(await verification.Scenes.CountAsync(), Is.EqualTo(0));
        });
    }

    [Test]
    public async Task Relating_characters_across_projects_is_refused()
    {
        var firstProject = await NewProjectAsync();
        var secondProject = (await Projects.CreateAsync(new CreateProjectRequest("Other Book"))).Id;

        var ines = await Characters.CreateAsync(firstProject, new CreateCharacterRequest("Ines"));
        var stranger = await Characters.CreateAsync(secondProject, new CreateCharacterRequest("Stranger"));

        Assert.That(
            async () => await Characters.AddRelationshipAsync(
                ines.Id, new CreateRelationshipRequest(stranger.Id, "sister")),
            Throws.TypeOf<InvalidOperationException>().With.Message.Contains("same project"));
    }

    [Test]
    public async Task Relationships_resolve_the_other_character_by_name()
    {
        var projectId = await NewProjectAsync();
        var ines = await Characters.CreateAsync(projectId, new CreateCharacterRequest("Ines"));
        var mara = await Characters.CreateAsync(projectId, new CreateCharacterRequest("Mara"));

        var updated = await Characters.AddRelationshipAsync(
            ines.Id, new CreateRelationshipRequest(mara.Id, "sister", "Estranged since the fire."));

        Assert.Multiple(() =>
        {
            Assert.That(updated.Relationships, Has.Count.EqualTo(1));
            Assert.That(updated.Relationships[0].RelatedCharacterName, Is.EqualTo("Mara"));
        });
    }

    [Test]
    public void Reading_a_missing_project_reports_not_found() =>
        Assert.That(
            async () => await Projects.GetAsync(Guid.NewGuid()),
            Throws.TypeOf<NotFoundException>());
}