test: fixed test for keep alive to apply to the SendData method

Deepgram.Tests/ClientTests/LiveTranscriptionClientTests.cs

@@ -12,23 +12,22 @@ public class LiveTranscriptionClientTests
     class LiveTranscriptionClientFake : LiveTranscriptionClient
     {
         private readonly Action<byte[]> _sendDataCallback;
-        public LiveTranscriptionClientFake(Action<byte[]> sendDataCallback) : base(new Models.Credentials("fake", "fake"))
+        public LiveTranscriptionClientFake(Action<byte[]> sendDataCallback) : base(new Models.Credentials("fake", "fake"))
         {
             _sendDataCallback = sendDataCallback ?? throw new ArgumentNullException(nameof(sendDataCallback));
-        }
-
+        }
+
         public override void SendData(byte[] data)
         {
             _sendDataCallback(data);
-        }
+        }
     }
 
     [Fact]
-    public void Test_OnKeepAliveExecuted_SendDataCalledWithData()
+    public void Test_SendDataCalledWithData()
     {
         // Arrange
-        var keepAliveMessage = JsonConvert.SerializeObject(new { type = "KeepAlive" });
-        var expected = Encoding.Default.GetBytes(keepAliveMessage);
+        var expected = Encoding.Default.GetBytes("0000");
 
         var sendDataCalled = false;
         byte[] sendDataRecieved = null;
@@ -38,7 +37,7 @@ public void Test_OnKeepAliveExecuted_SendDataCalledWithData()
         });
 
         // Act
-        client.KeepAlive();
+        client.SendData(expected);
 
         // Assert
         Assert.True(sendDataCalled);