diff --git a/GroundsForSupport.sln b/GroundsForSupport.sln
index 37e03a0..539cc38 100644
--- a/GroundsForSupport.sln
+++ b/GroundsForSupport.sln
@@ -11,7 +11,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{0AB3BF05
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "GroundsForSupport.Server.Tests", "GroundsForSupport.Server.Tests", "{56565355-472A-D7A5-BBD6-5A9243A600D2}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GroundsForSupport.API.Tests", "tests\GroundsForSupport.Server.Tests\GroundsForSupport.API.Tests.csproj", "{73D83B11-C5BC-4C4B-82BF-2DCEE689EDDC}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GroundsForSupport.Server.Tests", "tests\GroundsForSupport.Server.Tests\GroundsForSupport.Server.Tests.csproj", "{73D83B11-C5BC-4C4B-82BF-2DCEE689EDDC}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/src/GroundsForSupport.Server/Data/ContextOptions.cs b/src/GroundsForSupport.Server/Data/ContextOptions.cs
index e4eaacc..1413737 100644
--- a/src/GroundsForSupport.Server/Data/ContextOptions.cs
+++ b/src/GroundsForSupport.Server/Data/ContextOptions.cs
@@ -4,7 +4,7 @@ namespace GroundsForSupport.Server.Data;
 
 internal sealed record ContextOptions
 {
-  public string DatabaseFilePath { get; init; } = "GroundsForSupport.db";
+  public string DatabaseFilePath { get; init; } = string.Empty;
   public string GetFullyQualifiedDatabasePath()
   {
     return Path.GetFullPath(DatabaseFilePath, AppContext.BaseDirectory);
diff --git a/src/GroundsForSupport.Server/GroundsForSupport.Server.csproj b/src/GroundsForSupport.Server/GroundsForSupport.Server.csproj
index 74aa631..da4765d 100644
--- a/src/GroundsForSupport.Server/GroundsForSupport.Server.csproj
+++ b/src/GroundsForSupport.Server/GroundsForSupport.Server.csproj
@@ -16,6 +16,11 @@
     <PackageReference Include="Stripe.net" Version="50.1.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <InternalsVisibleTo Include="$(AssemblyName).Tests" />
+    <InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
+  </ItemGroup>
+
   <Target Name="InstallClientDeps" BeforeTargets="Build">
     <Message Text="Installing client deps..." Importance="high" />
     <Exec Command="npm install" WorkingDirectory="../GroundsForSupport.Client" />
diff --git a/src/GroundsForSupport.Server/Payments/Endpoints/CreatePaymentIntentEndpoint.cs b/src/GroundsForSupport.Server/Payments/Endpoints/CreatePaymentIntentEndpoint.cs
index 0ac607b..ebd0505 100644
--- a/src/GroundsForSupport.Server/Payments/Endpoints/CreatePaymentIntentEndpoint.cs
+++ b/src/GroundsForSupport.Server/Payments/Endpoints/CreatePaymentIntentEndpoint.cs
@@ -16,7 +16,8 @@ internal static class CreatePaymentIntentEndpoint
 
   public static async Task<IResult> CreatePaymentIntentHandler(
     Request request,
-    IStripeService stripeService
+    IStripeService stripeService,
+    CancellationToken cancellationToken
   )
   {
     var validationErrors = request.Validate(new ValidationContext(request));
@@ -32,7 +33,8 @@ internal static class CreatePaymentIntentEndpoint
       request.Name,
       request.Amount,
       request.Message,
-      request.Email
+      request.Email,
+      cancellationToken
     );
 
     if (isSuccess is false)
diff --git a/src/GroundsForSupport.Server/Payments/Stripe/IStripeService.cs b/src/GroundsForSupport.Server/Payments/Stripe/IStripeService.cs
index 3481c94..6575709 100644
--- a/src/GroundsForSupport.Server/Payments/Stripe/IStripeService.cs
+++ b/src/GroundsForSupport.Server/Payments/Stripe/IStripeService.cs
@@ -6,6 +6,7 @@ internal interface IStripeService
     string name,
     decimal amount,
     string? message,
-    string? email
+    string? email,
+    CancellationToken cancellationToken = default
   );
 }
\ No newline at end of file
diff --git a/src/GroundsForSupport.Server/Payments/Stripe/StripeService.cs b/src/GroundsForSupport.Server/Payments/Stripe/StripeService.cs
index 5fb57d4..59498a9 100644
--- a/src/GroundsForSupport.Server/Payments/Stripe/StripeService.cs
+++ b/src/GroundsForSupport.Server/Payments/Stripe/StripeService.cs
@@ -1,5 +1,3 @@
-using GroundsForSupport.Server.Data;
-
 using Microsoft.Extensions.Options;
 
 using Stripe;
@@ -15,7 +13,13 @@ internal sealed class StripeService(
   private readonly StripeClient _client = new(options.Value.ApiKey, httpClient: new SystemNetHttpClient(httpClient));
   private readonly ILogger<StripeService> _logger = logger;
 
-  public async Task<(bool IsSuccess, Intent Intent)> CreatePaymentIntentAsync(string name, decimal amount, string? message, string? email)
+  public async Task<(bool IsSuccess, Intent Intent)> CreatePaymentIntentAsync(
+    string name, 
+    decimal amount, 
+    string? message, 
+    string? email, 
+    CancellationToken cancellationToken = default
+  )
   {
     try
     {
@@ -40,7 +44,7 @@ internal sealed class StripeService(
         createOptions.ReceiptEmail = email;
       }
 
-      var intent = await _client.V1.PaymentIntents.CreateAsync(createOptions);
+      var intent = await _client.V1.PaymentIntents.CreateAsync(createOptions, cancellationToken: cancellationToken);
 
       return (true, new Intent(intent.ClientSecret));
     }
diff --git a/tests/GroundsForSupport.Server.Tests/GroundsForSupport.API.Tests.csproj b/tests/GroundsForSupport.Server.Tests/GroundsForSupport.Server.Tests.csproj
similarity index 95%
rename from tests/GroundsForSupport.Server.Tests/GroundsForSupport.API.Tests.csproj
rename to tests/GroundsForSupport.Server.Tests/GroundsForSupport.Server.Tests.csproj
index 31a8799..846c685 100644
--- a/tests/GroundsForSupport.Server.Tests/GroundsForSupport.API.Tests.csproj
+++ b/tests/GroundsForSupport.Server.Tests/GroundsForSupport.Server.Tests.csproj
@@ -4,7 +4,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <OutputType>Exe</OutputType>
-    <RootNamespace>GroundsForSupport.API.Tests</RootNamespace>
+    <RootNamespace>GroundsForSupport.Server.Tests</RootNamespace>
     <TargetFramework>net10.0</TargetFramework>
   </PropertyGroup>
 
@@ -29,6 +29,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit.v3" Version="3.2.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/tests/GroundsForSupport.Server.Tests/Integration/Infra/TestApi.cs b/tests/GroundsForSupport.Server.Tests/Integration/Infra/TestApi.cs
index 5040b23..34890c8 100644
--- a/tests/GroundsForSupport.Server.Tests/Integration/Infra/TestApi.cs
+++ b/tests/GroundsForSupport.Server.Tests/Integration/Infra/TestApi.cs
@@ -1,7 +1,40 @@
+using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Mvc.Testing;
+using GroundsForSupport.Server.Data;
+using GroundsForSupport.Server.Payments.Stripe;
 
-namespace GroundsForSupport.API.Tests.Integration.Infra;
+using System.Text.Json;
+using Microsoft.Extensions.Configuration;
+using System.Text;
+
+namespace GroundsForSupport.Server.Tests.Integration.Infra;
 
 public sealed class TestApi : WebApplicationFactory<Program>
 {
+  protected override void ConfigureWebHost(IWebHostBuilder builder)
+  {
+    var contextOptions = new ContextOptions()
+    {
+      DatabaseFilePath = "GroundsForSupport.Test.db",
+    };
+
+    var stripeOptions = new StripeOptions()
+    {
+      ApiKey = "sk_test_12345",
+    };
+
+    var contextOptionsJson = JsonSerializer.Serialize(contextOptions);
+    var stripeOptionsJson = JsonSerializer.Serialize(stripeOptions);
+    
+    var configJson = $@"{{
+      ""{nameof(ContextOptions)}"": {contextOptionsJson},
+      ""{nameof(StripeOptions)}"": {stripeOptionsJson}
+    }}";
+
+    var config = new ConfigurationBuilder()
+      .AddJsonStream(new MemoryStream(Encoding.UTF8.GetBytes(configJson)))
+      .Build();
+
+    builder.UseConfiguration(config);
+  }
 }
\ No newline at end of file
diff --git a/tests/GroundsForSupport.Server.Tests/Integration/PaymentTests.cs b/tests/GroundsForSupport.Server.Tests/Integration/PaymentTests.cs
index 9889f4c..dbfbe2a 100644
--- a/tests/GroundsForSupport.Server.Tests/Integration/PaymentTests.cs
+++ b/tests/GroundsForSupport.Server.Tests/Integration/PaymentTests.cs
@@ -1,7 +1,14 @@
 using System.Net;
 using System.Net.Http.Json;
 
-using GroundsForSupport.API.Tests.Integration.Infra;
+using GroundsForSupport.Server.Payments;
+using GroundsForSupport.Server.Payments.Stripe;
+using GroundsForSupport.Server.Tests.Integration.Infra;
+
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.DependencyInjection;
+
+using Moq;
 
 [assembly: CaptureConsole]
 
@@ -50,7 +57,26 @@ public sealed class PaymentTests(TestApi api) : IClassFixture<TestApi>
   [Fact]
   public async Task CreatePaymentIntent_WhenGivenValidRequest_ItShouldReturnCreated()
   {
-    var client = _api.CreateClient();
+    var mockStripeService = new Mock<IStripeService>();
+
+    mockStripeService
+      .Setup(s => s.CreatePaymentIntentAsync(
+          It.IsAny<string>(),
+          It.IsAny<decimal>(),
+          It.IsAny<string?>(),
+          It.IsAny<string?>(),
+          It.IsAny<CancellationToken>()
+        )
+      )
+      .ReturnsAsync((true, new Intent("pi_12345_secret_67890")));
+    
+    var api = _api.WithWebHostBuilder(
+      b => b.ConfigureTestServices(
+        s => s.AddSingleton(mockStripeService.Object)
+      )
+    );
+
+    var client = api.CreateClient();
 
     var request = new
     {