Merge pull request 'docs(nuget): include package readmes' (#19) from docs/hrynco-18-nuget-readme into development

Add package-specific NuGet readmes for both HrynCo DAL packages.

Ref: hrynco/hrynco-ef#18

Directory.Packages.props

@@ -9,5 +9,11 @@
     <PackageVersion Include="Microsoft.EntityFrameworkCore" Version="10.0.7" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.7" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore.Relational" Version="10.0.7" />
+    <!-- Tests -->
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.7" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageVersion Include="SQLitePCLRaw.bundle_e_sqlite3" Version="3.0.5" />
+    <PackageVersion Include="xunit" Version="2.9.3" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
 </Project>

HrynCo.DAL.Abstract/HrynCo.DAL.Abstract.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
@@ -6,11 +6,17 @@
     <Nullable>enable</Nullable>
     <RootNamespace>HrynCo.DAL.Abstract</RootNamespace>
     <PackageId>HrynCo.DAL.Abstract</PackageId>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
     <Authors>HrynCo</Authors>
     <Description>Abstract DAL contracts for HrynCo applications: entities, repository and unit-of-work interfaces.</Description>
     <PackageTags>hrynco dal abstract entity repository unitofwork</PackageTags>
     <RepositoryType>git</RepositoryType>
-    <RepositoryUrl>https://gitea.grynco.com.ua/hrynco/hrynco-ef.git</RepositoryUrl>
+    <RepositoryUrl>https://gitea.hrynco.com/hrynco/hrynco-ef.git</RepositoryUrl>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Include="README.md" Pack="true" PackagePath="/" />
+  </ItemGroup>
+
 </Project>
+

HrynCo.DAL.Abstract/README.md

@@ -0,0 +1,5 @@
+# HrynCo.DAL.Abstract
+
+Infrastructure-independent contracts for entities, repositories, unit of work, transactions, and pagination. Reference this package from application layers that should not depend on Entity Framework Core.
+
+Source and usage context: [hrynco-ef](https://gitea.hrynco.com/hrynco/hrynco-ef).

HrynCo.DAL.EF.Tests/EfUnitOfWorkTests.cs

@@ -0,0 +1,213 @@
+namespace HrynCo.DAL.EF.Tests;
+
+using HrynCo.DAL.Abstract;
+using Microsoft.EntityFrameworkCore;
+using Xunit;
+
+public sealed class EfUnitOfWorkTests
+{
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task ActionFailure_ReportsBothExceptionsWhenRollbackFails(bool returnsResult)
+    {
+        var original = new InvalidOperationException("Action failed.");
+        var rollbackFailure = new InvalidOperationException("Transaction completed.");
+        var interceptor = new TransactionFailureInterceptor
+        {
+            RollbackException = rollbackFailure
+        };
+        await using DbContext context = await CreateContextAsync(interceptor);
+        var unitOfWork = new TestUnitOfWork(context);
+
+        AggregateException actual = await Assert.ThrowsAsync<AggregateException>(() =>
+            ExecuteAsync(unitOfWork, returnsResult, () => Task.FromException(original)));
+
+        Assert.Collection(actual.InnerExceptions,
+            error => Assert.Same(original, error),
+            error => Assert.Same(rollbackFailure, error));
+        Assert.Equal(1, interceptor.RollbackAttempts);
+        Assert.Null(unitOfWork.GetCurrentTransaction());
+        Assert.Null(context.Database.CurrentTransaction);
+    }
+
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task CommitFailure_ReportsBothExceptionsWhenRollbackFails(bool returnsResult)
+    {
+        var original = new InvalidOperationException("Commit failed.");
+        var rollbackFailure = new InvalidOperationException("Transaction completed.");
+        var interceptor = new TransactionFailureInterceptor
+        {
+            CommitException = original,
+            RollbackException = rollbackFailure
+        };
+        await using DbContext context = await CreateContextAsync(interceptor);
+        var unitOfWork = new TestUnitOfWork(context);
+
+        AggregateException actual = await Assert.ThrowsAsync<AggregateException>(() =>
+            ExecuteAsync(unitOfWork, returnsResult, () => Task.CompletedTask));
+
+        Assert.Collection(actual.InnerExceptions,
+            error => Assert.Same(original, error),
+            error => Assert.Same(rollbackFailure, error));
+        Assert.Equal(1, interceptor.CommitAttempts);
+        Assert.Equal(1, interceptor.RollbackAttempts);
+        Assert.Null(unitOfWork.GetCurrentTransaction());
+        Assert.Null(context.Database.CurrentTransaction);
+    }
+
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task CompletedTransaction_ReportsActionAndRollbackExceptions(bool returnsResult)
+    {
+        await using DbContext context = await CreateContextAsync();
+        var unitOfWork = new TestUnitOfWork(context);
+        var original = new InvalidOperationException("Action failed after the provider completed the transaction.");
+
+        AggregateException actual = await Assert.ThrowsAsync<AggregateException>(() =>
+            ExecuteAsync(unitOfWork, returnsResult, async () =>
+            {
+                await context.Database.CurrentTransaction!.CommitAsync();
+                throw original;
+            }));
+
+        Assert.Same(original, actual.InnerExceptions[0]);
+        Assert.IsType<InvalidOperationException>(actual.InnerExceptions[1]);
+        Assert.Null(unitOfWork.GetCurrentTransaction());
+        Assert.Null(context.Database.CurrentTransaction);
+    }
+
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task ActionFailure_RollsBackWritesAndAllowsNextTransaction(bool returnsResult)
+    {
+        await using DbContext context = await CreateContextAsync();
+        var unitOfWork = new TestUnitOfWork(context);
+        var original = new InvalidOperationException("Action failed.");
+
+        Exception actual = await Assert.ThrowsAsync<InvalidOperationException>(() =>
+            ExecuteAsync(unitOfWork, returnsResult, async () =>
+            {
+                await context.Database.ExecuteSqlRawAsync("INSERT INTO records VALUES (1)");
+                throw original;
+            }));
+
+        Assert.Same(original, actual);
+        Assert.Equal(0, await CountRecordsAsync(context));
+        Assert.Null(unitOfWork.GetCurrentTransaction());
+        await ExecuteAsync(unitOfWork, returnsResult,
+            () => context.Database.ExecuteSqlRawAsync("INSERT INTO records VALUES (2)"));
+        Assert.Equal(1, await CountRecordsAsync(context));
+    }
+
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task Success_CommitsWritesAndCreatesFreshTransactionForNextCall(bool returnsResult)
+    {
+        var interceptor = new TransactionFailureInterceptor();
+        await using DbContext context = await CreateContextAsync(interceptor);
+        var unitOfWork = new TestUnitOfWork(context);
+        ITransaction? first = null;
+
+        await ExecuteAsync(unitOfWork, returnsResult, async () =>
+        {
+            first = unitOfWork.GetCurrentTransaction();
+            await context.Database.ExecuteSqlRawAsync("INSERT INTO records VALUES (1)");
+        });
+        Assert.Null(unitOfWork.GetCurrentTransaction());
+        Assert.Null(context.Database.CurrentTransaction);
+        await ExecuteAsync(unitOfWork, returnsResult, async () =>
+        {
+            Assert.NotSame(first, unitOfWork.GetCurrentTransaction());
+            await context.Database.ExecuteSqlRawAsync("INSERT INTO records VALUES (2)");
+        });
+
+        Assert.Equal(2, await CountRecordsAsync(context));
+        Assert.Equal(2, interceptor.CommitAttempts);
+        Assert.Equal(0, interceptor.RollbackAttempts);
+        Assert.Null(unitOfWork.GetCurrentTransaction());
+    }
+
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task CallerOwnedTransaction_SuccessLeavesLifecycleToCaller(bool returnsResult)
+    {
+        var interceptor = new TransactionFailureInterceptor();
+        await using DbContext context = await CreateContextAsync(interceptor);
+        var unitOfWork = new TestUnitOfWork(context);
+        await using ITransaction transaction = await unitOfWork.BeginTransactionAsync();
+
+        await ExecuteAsync(unitOfWork, returnsResult,
+            () => context.Database.ExecuteSqlRawAsync("INSERT INTO records VALUES (1)"));
+
+        Assert.Same(transaction, unitOfWork.GetCurrentTransaction());
+        Assert.NotNull(context.Database.CurrentTransaction);
+        Assert.Equal(0, interceptor.CommitAttempts);
+        Assert.Equal(0, interceptor.RollbackAttempts);
+        await transaction.RollbackAsync();
+        Assert.Equal(0, await CountRecordsAsync(context));
+    }
+
+    [Theory]
+    [InlineData(false)]
+    [InlineData(true)]
+    public async Task CallerOwnedTransaction_FailureLeavesLifecycleToCaller(bool returnsResult)
+    {
+        var interceptor = new TransactionFailureInterceptor();
+        await using DbContext context = await CreateContextAsync(interceptor);
+        var unitOfWork = new TestUnitOfWork(context);
+        await using ITransaction transaction = await unitOfWork.BeginTransactionAsync();
+        var original = new InvalidOperationException("Action failed.");
+
+        Exception actual = await Assert.ThrowsAsync<InvalidOperationException>(() =>
+            ExecuteAsync(unitOfWork, returnsResult, () => Task.FromException(original)));
+
+        Assert.Same(original, actual);
+        Assert.Same(transaction, unitOfWork.GetCurrentTransaction());
+        Assert.NotNull(context.Database.CurrentTransaction);
+        Assert.Equal(0, interceptor.CommitAttempts);
+        Assert.Equal(0, interceptor.RollbackAttempts);
+        await transaction.RollbackAsync();
+    }
+
+    private static async Task ExecuteAsync(TestUnitOfWork unitOfWork, bool returnsResult, Func<Task> action)
+    {
+        if (returnsResult)
+        {
+            int result = await unitOfWork.ExecuteInTransactionAsync(async () =>
+            {
+                await action();
+                return 42;
+            });
+            Assert.Equal(42, result);
+            return;
+        }
+
+        await unitOfWork.ExecuteInTransactionAsync(action);
+    }
+
+    private static async Task<DbContext> CreateContextAsync(TransactionFailureInterceptor? interceptor = null)
+    {
+        var options = new DbContextOptionsBuilder().UseSqlite("Data Source=:memory:");
+        if (interceptor is not null)
+        {
+            options.AddInterceptors(interceptor);
+        }
+
+        var context = new DbContext(options.Options);
+        await context.Database.OpenConnectionAsync();
+        await context.Database.ExecuteSqlRawAsync("CREATE TABLE records (id INTEGER NOT NULL)");
+        return context;
+    }
+
+    private static Task<int> CountRecordsAsync(DbContext context)
+    {
+        return context.Database.SqlQueryRaw<int>("SELECT COUNT(*) AS Value FROM records").SingleAsync();
+    }
+}

HrynCo.DAL.EF.Tests/HrynCo.DAL.EF.Tests.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" />
+    <PackageReference Include="xunit" />
+    <PackageReference Include="xunit.runner.visualstudio">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <ProjectReference Include="..\HrynCo.DAL.EF\HrynCo.DAL.EF.csproj" />
+  </ItemGroup>
+</Project>

HrynCo.DAL.EF.Tests/TestUnitOfWork.cs

@@ -0,0 +1,6 @@
+namespace HrynCo.DAL.EF.Tests;
+
+using HrynCo.DAL.EF.Core;
+using Microsoft.EntityFrameworkCore;
+
+internal sealed class TestUnitOfWork(DbContext context) : EfUnitOfWork<DbContext>(context);

HrynCo.DAL.EF.Tests/TransactionFailureInterceptor.cs

@@ -0,0 +1,42 @@
+namespace HrynCo.DAL.EF.Tests;
+
+using System.Data.Common;
+using Microsoft.EntityFrameworkCore.Diagnostics;
+
+internal sealed class TransactionFailureInterceptor : DbTransactionInterceptor
+{
+    public Exception? CommitException { get; init; }
+    public Exception? RollbackException { get; init; }
+    public int CommitAttempts { get; private set; }
+    public int RollbackAttempts { get; private set; }
+
+    public override ValueTask<InterceptionResult> TransactionCommittingAsync(
+        DbTransaction transaction,
+        TransactionEventData eventData,
+        InterceptionResult result,
+        CancellationToken cancellationToken = default)
+    {
+        CommitAttempts++;
+        if (CommitException is not null)
+        {
+            throw CommitException;
+        }
+
+        return ValueTask.FromResult(result);
+    }
+
+    public override ValueTask<InterceptionResult> TransactionRollingBackAsync(
+        DbTransaction transaction,
+        TransactionEventData eventData,
+        InterceptionResult result,
+        CancellationToken cancellationToken = default)
+    {
+        RollbackAttempts++;
+        if (RollbackException is not null)
+        {
+            throw RollbackException;
+        }
+
+        return ValueTask.FromResult(result);
+    }
+}

HrynCo.DAL.EF/Core/EfUnitOfWork.cs

@@ -42,11 +42,11 @@ public class EfUnitOfWork<TDbContext> : IUnitOfWork
                 await tx.CommitAsync();
             }
         }
-        catch
+        catch (Exception original)
         {
             if (ownsTransaction)
             {
-                await tx.RollbackAsync();
+                await RollbackPreservingFailureAsync(tx, original);
             }
 
             throw;
@@ -55,7 +55,14 @@ public class EfUnitOfWork<TDbContext> : IUnitOfWork
         {
             if (ownsTransaction)
             {
-                await tx.DisposeAsync();
+                try
+                {
+                    await tx.DisposeAsync();
+                }
+                finally
+                {
+                    _currentTransaction = null;
+                }
             }
         }
     }
@@ -77,11 +84,11 @@ public class EfUnitOfWork<TDbContext> : IUnitOfWork
 
             return result;
         }
-        catch
+        catch (Exception original)
         {
             if (ownsTransaction)
             {
-                await tx.RollbackAsync();
+                await RollbackPreservingFailureAsync(tx, original);
             }
 
             throw;
@@ -90,11 +97,30 @@ public class EfUnitOfWork<TDbContext> : IUnitOfWork
         {
             if (ownsTransaction)
             {
-                await tx.DisposeAsync();
+                try
+                {
+                    await tx.DisposeAsync();
+                }
+                finally
+                {
+                    _currentTransaction = null;
+                }
             }
         }
     }
 
+    private static async Task RollbackPreservingFailureAsync(ITransaction transaction, Exception original)
+    {
+        try
+        {
+            await transaction.RollbackAsync();
+        }
+        catch (Exception rollbackFailure)
+        {
+            throw new AggregateException("The transaction and its rollback both failed.", original, rollbackFailure);
+        }
+    }
+
     public ITransaction? GetCurrentTransaction()
     {
         return _currentTransaction;

HrynCo.DAL.EF/HrynCo.DAL.EF.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
@@ -6,13 +6,18 @@
     <Nullable>enable</Nullable>
     <RootNamespace>HrynCo.DAL.EF</RootNamespace>
     <PackageId>HrynCo.DAL.EF</PackageId>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
     <Authors>HrynCo</Authors>
     <Description>Entity Framework Core base implementations for HrynCo applications: generic repository and unit-of-work.</Description>
     <PackageTags>hrynco dal ef entityframework repository unitofwork</PackageTags>
     <RepositoryType>git</RepositoryType>
-    <RepositoryUrl>https://gitea.grynco.com.ua/hrynco/hrynco-ef.git</RepositoryUrl>
+    <RepositoryUrl>https://gitea.hrynco.com/hrynco/hrynco-ef.git</RepositoryUrl>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Include="README.md" Pack="true" PackagePath="/" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\HrynCo.DAL.Abstract\HrynCo.DAL.Abstract.csproj" />
   </ItemGroup>
@@ -28,3 +33,4 @@
   </ItemGroup>
 
 </Project>
+

HrynCo.DAL.EF/README.md

@@ -0,0 +1,5 @@
+# HrynCo.DAL.EF
+
+Entity Framework Core implementations of the HrynCo.DAL.Abstract repository and unit-of-work contracts. Reference this package from the data-access layer alongside your EF Core database provider.
+
+Source and usage context: [hrynco-ef](https://gitea.hrynco.com/hrynco/hrynco-ef).

README.md

@@ -4,12 +4,13 @@ Reusable Entity Framework Core base library for HrynCo applications.
 
 ## Solution
 
-The solution (`hrynco-ef.slnx`) contains two projects:
+The solution (`hrynco-ef.slnx`) contains the following projects:
 
 | Project | Description |
 |---|---|
 | `HrynCo.DAL.Abstract` | Infrastructure-agnostic contracts: entities, repository interfaces, unit of work, transactions, pagination. No EF Core dependency. |
 | `HrynCo.DAL.EF` | Entity Framework Core implementations of the abstract contracts. Depends on `HrynCo.DAL.Abstract` and EF Core. |
+| `HrynCo.DAL.EF.Tests` | Transaction lifecycle regression tests using SQLite in memory. |
 
 The split allows consuming projects to reference only `HrynCo.DAL.Abstract` in domain/application layers, keeping those layers free of EF Core.
 
@@ -181,6 +182,18 @@ Entity Framework Core implementations of the abstract contracts.
 
 ## Usage
 
+### Transaction ownership and failures
+
+Both `ExecuteInTransactionAsync` overloads create, commit, and dispose a transaction when no transaction is already cached by the unit of work. After disposal, the cached reference is cleared, so a later call starts a fresh transaction.
+
+If the action or commit fails, the owned transaction is rolled back. If rollback also fails (including when the provider reports a completed transaction), an `AggregateException` contains the original failure first and the rollback failure second. Disposal still runs.
+
+When `BeginTransactionAsync` has already supplied a transaction to the caller, `ExecuteInTransactionAsync` runs the action inside that transaction and leaves commit, rollback, and disposal to the caller. Its cached reference is retained as before; the automatic cleanup above applies only to transactions owned by `ExecuteInTransactionAsync`.
+
+Run the regression suite with `dotnet test hrynco-ef.slnx`.
+
+### Package references
+
 Reference `HrynCo.DAL.Abstract` for contracts only (e.g. in domain/application layers).  
 Reference `HrynCo.DAL.EF` for the full EF Core implementation (infrastructure layer).
 

hrynco-ef.slnx

@@ -1,4 +1,5 @@
 <Solution>
   <Project Path="HrynCo.DAL.Abstract/HrynCo.DAL.Abstract.csproj" />
   <Project Path="HrynCo.DAL.EF/HrynCo.DAL.EF.csproj" />
+  <Project Path="HrynCo.DAL.EF.Tests/HrynCo.DAL.EF.Tests.csproj" />
 </Solution>