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feat: create NATS.Server.TestUtilities with shared helpers

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Add shared test utility library with TestPortAllocator.GetFreePort() and
SocketTestHelper.ReadUntilAsync() to deduplicate helpers across test projects.
This is the foundation for splitting the monolithic test project into
feature-focused test projects.
This commit is contained in:
Joseph Doherty
2026-03-12 14:29:14 -04:00
parent fb19b50231
commit 2a75ee534a
5 changed files with 57 additions and 0 deletions
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20
tests/NATS.Server.TestUtilities/NATS.Server.TestUtilities.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="NATS.Client.Core" />
<PackageReference Include="NATS.NKeys" />
<PackageReference Include="Shouldly" />
<PackageReference Include="xunit" />
</ItemGroup>
<ItemGroup>
<None Update="TestData\**\*" CopyToOutputDirectory="PreserveNewest" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\src\NATS.Server\NATS.Server.csproj" />
</ItemGroup>
</Project>

21
tests/NATS.Server.TestUtilities/SocketTestHelper.cs Normal file
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using System.Net.Sockets;
using System.Text;
namespace NATS.Server.TestUtilities;
public static class SocketTestHelper
{
public static async Task<string> ReadUntilAsync(Socket sock, string expected, int timeoutMs = 5000)
{
using var cts = new CancellationTokenSource(timeoutMs);
var sb = new StringBuilder();
var buf = new byte[4096];
while (!sb.ToString().Contains(expected, StringComparison.Ordinal))
{
var n = await sock.ReceiveAsync(buf, SocketFlags.None, cts.Token);
if (n == 0) break;
sb.Append(Encoding.ASCII.GetString(buf, 0, n));
}
return sb.ToString();
}
}

14
tests/NATS.Server.TestUtilities/TestPortAllocator.cs Normal file
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using System.Net;
using System.Net.Sockets;
namespace NATS.Server.TestUtilities;
public static class TestPortAllocator
{
public static int GetFreePort()
{
using var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
sock.Bind(new IPEndPoint(IPAddress.Loopback, 0));
return ((IPEndPoint)sock.LocalEndPoint!).Port;
}
}

1
tests/NATS.Server.Tests/NATS.Server.Tests.csproj
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@@ -28,6 +28,7 @@
<ItemGroup>
<ProjectReference Include="..\..\src\NATS.Server\NATS.Server.csproj" />
<ProjectReference Include="..\NATS.Server.TestUtilities\NATS.Server.TestUtilities.csproj" />
</ItemGroup>
</Project>