test(OAuth2TokenProvider): added integration tests for OAuth2TokenPro…

…vider

Client.IntegrationTests/OAuthIntegrationTest.cs

@@ -0,0 +1,46 @@
+using System.Threading.Tasks;
+using Grpc.Core;
+using NUnit.Framework;
+
+namespace Client.IntegrationTests;
+
+[TestFixture]
+public class OAuthIntegrationTest
+{
+    private readonly ZeebeIntegrationTestHelper testHelper = ZeebeIntegrationTestHelper.Latest(true);
+
+    [OneTimeSetUp]
+    public async Task Setup()
+    {
+        await testHelper.SetupIntegrationTest();
+    }
+
+    [OneTimeTearDown]
+    public async Task Stop()
+    {
+        await testHelper.TearDownIntegrationTest();
+    }
+
+    [Test]
+    public async Task ShouldSendRequestAndNotFailingWithAuthenticatedClient()
+    {
+        var topology = await testHelper.CreateAuthenticatedZeebeClient().TopologyRequest().Send();
+        var gatewayVersion = topology.GatewayVersion;
+        Assert.AreEqual(ZeebeIntegrationTestHelper.LatestVersion, gatewayVersion);
+
+        var topologyBrokers = topology.Brokers;
+        Assert.AreEqual(1, topologyBrokers.Count);
+
+        var topologyBroker = topologyBrokers[0];
+        Assert.AreEqual(0, topologyBroker.NodeId);
+    }
+
+    [Test]
+    public async Task ShouldFailWithUnauthenticatedClient()
+    {
+        Assert.ThrowsAsync<RpcException>(code: async () =>
+        {
+            await testHelper.CreateZeebeClient().TopologyRequest().Send();
+        });
+    }
+}