SlipItIn/SlipItIn.Server.Tests/DbSeederTests.cs

using SlipItIn.Server.Data;

namespace SlipItIn.Server.Tests;

public class DbSeederTests
{
    [Fact]
    public async Task SeedAsync_SeedsUsersAndPhrases_WhenDatabaseIsEmpty()
    {
        var factory = TestDbHelper.CreateFactory();
        using var db = factory.CreateDbContext();

        await DbSeeder.SeedAsync(db);

        Assert.Equal(2, db.Users.Count());
        Assert.True(db.Phrases.Count() >= 5);
        Assert.All(db.Phrases, p => Assert.True(p.IsActive));
    }

    [Fact]
    public async Task SeedAsync_DoesNothing_WhenUsersAlreadyExist()
    {
        var factory = TestDbHelper.CreateFactory();
        using var db = factory.CreateDbContext();
        TestDbHelper.SeedUser(db);

        await DbSeeder.SeedAsync(db);

        Assert.Equal(1, db.Users.Count());
        Assert.Empty(db.Phrases);
    }

    [Fact]
    public async Task SeedAsync_DoesNothing_WhenPhrasesAlreadyExist()
    {
        var factory = TestDbHelper.CreateFactory();
        using var db = factory.CreateDbContext();
        TestDbHelper.SeedPhrases(db, 1);

        await DbSeeder.SeedAsync(db);

        Assert.Equal(1, db.Users.Count()); // nur der Creator-User des Phrase-Seedings
        Assert.Equal(1, db.Phrases.Count());
    }

    [Fact]
    public async Task SeedAsync_IsIdempotent_WhenCalledTwice()
    {
        var factory = TestDbHelper.CreateFactory();
        using var db = factory.CreateDbContext();

        await DbSeeder.SeedAsync(db);
        var userCount = db.Users.Count();
        var phraseCount = db.Phrases.Count();

        await DbSeeder.SeedAsync(db);

        Assert.Equal(userCount, db.Users.Count());
        Assert.Equal(phraseCount, db.Phrases.Count());
    }
}