feat(Extensions): add PDF generation support for EnvelopeGenerator tests

- Introduced QuestPDF dependency to generate PDF documents in tests.
- Added `CreatePdfAsBase64` extension method for generating random PDF content.
- Added `CreateDocumentCommand` and `CreateDocumentCommands` helpers for creating document test data.
- Refactored using statements and added `EnvelopeGenerator.Application.EnvelopeReceivers.Commands`.
- Maintains existing sample user and receiver setup for integration testing.

EnvelopeGenerator.Infrastructure/EnvelopeGenerator.Infrastructure.csproj

@@ -12,6 +12,7 @@
     <PackageReference Include="DigitalData.Core.Infrastructure" Version="2.3.1" />
     <PackageReference Include="DigitalData.Core.Infrastructure.AutoMapper" Version="1.0.3" />
     <PackageReference Include="DigitalData.EmailProfilerDispatcher" Version="3.1.1" />
+    <PackageReference Include="QuestPDF" Version="2025.7.1" />
 	<PackageReference Include="UserManager" Version="1.1.3" />
   </ItemGroup>
 

EnvelopeGenerator.Tests.Application/Fake.cs

@@ -2,6 +2,7 @@
 using DigitalData.Core.Abstraction.Application.Repository;
 using DigitalData.UserManager.Domain.Entities;
 using EnvelopeGenerator.Application;
+using EnvelopeGenerator.Application.EnvelopeReceivers.Commands;
 using EnvelopeGenerator.Application.Envelopes.Commands;
 using EnvelopeGenerator.Application.Receivers.Commands;
 using EnvelopeGenerator.Application.Users.Commands;
@@ -11,6 +12,8 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using QuestPDF.Fluent;
+using QuestPDF.Infrastructure;
 
 namespace EnvelopeGenerator.Tests.Application;
 
@@ -151,6 +154,45 @@ public static class Extensions
             .ToList();
     #endregion
 
+    #region Envelope Document
+    public static string CreatePdfAsBase64(this Faker faker)
+    {
+        string name = faker.Name.FullName();
+        string address = faker.Address.FullAddress();
+        string lorem = faker.Lorem.Paragraphs(2);
+
+        QuestPDF.Settings.License = LicenseType.Community;
+        var document = Document.Create(container =>
+        {
+            container.Page(page =>
+            {
+                page.Margin(50);
+                page.Header().Text("Random PDF").FontSize(20).Bold();
+                page.Content().Column(col =>
+                {
+                    col.Item().Text($"Vor- und Nachname: {name}");
+                    col.Item().Text($"Adresse: {address}");
+                    col.Item().Text(lorem);
+                });
+            });
+        });
+
+        using var ms = new MemoryStream();
+        document.GeneratePdf(ms);
+        return Convert.ToBase64String(ms.ToArray());
+    }
+
+    public static DocumentCreateCommand CreateDocumentCommand(this Faker faker) => new()
+    {
+        DataAsBase64 = faker.CreatePdfAsBase64()
+    };
+
+    public static List<DocumentCreateCommand> CreateDocumentCommands(this Faker fake, int minCount = 10, int maxCount = 20)
+    => Enumerable.Range(0, fake.Random.Number(minCount, maxCount))
+        .Select(_ => fake.CreateDocumentCommand())
+        .ToList();
+    #endregion
+
     #region User Command
     public static CreateUserCommand CreateUserCommand(this Faker fake) => new()
     {