test(resp): ajoute un test pour le décodage de strings

tests/Shared.UnitTests/Resp.cs

@@ -0,0 +1,23 @@
+using System.Text;
+using Shared.Resp;
+
+namespace Shared.unitTests;
+
+public class RespTests
+{
+  [Theory]
+  [InlineData("+OK\r\n", "OK")]
+  [InlineData("-NOT OK\r\n", "NOT OK")]
+  [InlineData("$5\r\nHELLO\r\n", "HELLO")]
+  [InlineData("$6\r\n\nWORLD\r\n", "\nWORLD")]
+  [InlineData("$0\r\n\r\n", "")]
+  public void StringDecode(string input, string expected)
+  {
+    using var stream = new MemoryStream(Encoding.UTF8.GetBytes(input));
+    using var reader = new StreamReader(stream);
+
+    var result = Item.Decode(reader);
+
+    Assert.Equal(expected, result.ToString());
+  }
+}