tiku-backend.net/Tiku.IntegrationTests/ArchitectureBoundaryTests.cs

namespace Tiku.IntegrationTests;

public sealed class ArchitectureBoundaryTests
{
    [Fact]
    public void Business_code_does_not_bypass_tenant_query_boundaries()
    {
        var root = FindRepositoryRoot();
        var sourceRoots = new[] { "Tiku.Api", "Tiku.Application", "Tiku.Infrastructure" };
        var forbidden = new[]
        {
            "IgnoreQueryFilters(",
            "FromSql(",
            "FromSqlRaw(",
            "FromSqlInterpolated(",
            "ExecuteSql(",
            "ExecuteSqlRaw(",
            "ExecuteSqlInterpolated(",
            "new NpgsqlCommand("
        };

        var violations = sourceRoots
            .SelectMany(directory => Directory.EnumerateFiles(
                Path.Combine(root, directory),
                "*.cs",
                SearchOption.AllDirectories))
            .Where(path => !path.Contains(
                $"{Path.DirectorySeparatorChar}Persistence{Path.DirectorySeparatorChar}Migrations{Path.DirectorySeparatorChar}",
                StringComparison.Ordinal))
            .SelectMany(path => File.ReadLines(path)
                .Select((line, index) => new { path, line, lineNumber = index + 1 }))
            .Where(candidate => forbidden.Any(symbol =>
                candidate.line.Contains(symbol, StringComparison.Ordinal)))
            .Select(candidate => $"{Path.GetRelativePath(root, candidate.path)}:{candidate.lineNumber}")
            .ToArray();

        Assert.True(
            violations.Length == 0,
            $"Forbidden tenant-boundary bypasses were found:{Environment.NewLine}{string.Join(Environment.NewLine, violations)}");
    }

    private static string FindRepositoryRoot()
    {
        var directory = new DirectoryInfo(AppContext.BaseDirectory);
        while (directory is not null && !File.Exists(Path.Combine(directory.FullName, "TIKU-BACKEND.slnx")))
        {
            directory = directory.Parent;
        }

        return directory?.FullName ?? throw new DirectoryNotFoundException("Repository root was not found.");
    }
}