PnvPanel/backend/tests/PnvPanel.Application.Tests/Instructions/GetInstructionIntroQueryHandlerTests.cs

using PnvPanel.Application.Instructions;
using PnvPanel.Application.Tests.TestSupport;
using PnvPanel.Domain.Instructions;
using Xunit;

namespace PnvPanel.Application.Tests.Instructions;

public class GetInstructionIntroQueryHandlerTests
{
    [Fact]
    public async Task Handle_WhenNoIntroSeeded_ReturnsEmptyDefault()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var handler = new GetInstructionIntroQueryHandler(dbContext);

        var result = await handler.Handle(new GetInstructionIntroQuery(), CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal(string.Empty, result.Value.Body);
    }

    [Fact]
    public async Task Handle_WhenIntroExists_ReturnsIt()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var intro = InstructionIntro.Create("Привет, это инструкция.");
        dbContext.InstructionIntros.Add(intro);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        var handler = new GetInstructionIntroQueryHandler(dbContext);

        var result = await handler.Handle(new GetInstructionIntroQuery(), CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal("Привет, это инструкция.", result.Value.Body);
    }
}