update newline character (#1419)

* update newline character

Author: alinpahontu2912

RELEASENOTES.md

@@ -40,6 +40,7 @@ __Bug Fixes__:
 #1387 Attaching tensor to a DisposeScope no longer makes Statistics.DetachedFromScopeCount go negative.<br/>
 #1390 DisposeScopeManager.Statistics now includes DisposedOutsideScopeCount and AttachedToScopeCount. ThreadTotalLiveCount is now exact instead of approximate. ToString gives a useful debug string, and documentation is added for how to troubleshoot memory leaks. Also DisposeScopeManager.Statistics.TensorStatistics and DisposeScopeManager.Statistics.PackedSequenceStatistics provide separate metrics for these objects.<br/>
 #1392 ToTensor() extension method memory leaks fixed.<br/>
+#1414 tensor.print() - Missing default "newLine" Parameter<br/>
 
 # NuGet Version 0.103.0
 

src/TorchSharp/Tensor/TensorExtensionMethods.cs

@@ -259,7 +259,7 @@ public static string cstr(this Tensor tensor, string? fltFormat = "g5", int? wid
         /// The style to use -- either 'default,' 'metadata,' 'julia,' or 'numpy'
         /// </param>
         /// <returns></returns>
-        public static Tensor print(this Tensor t, string? fltFormat = "g5", int? width = 100, string? newLine = "", CultureInfo? cultureInfo = null, TensorStringStyle style = TensorStringStyle.Default)
+        public static Tensor print(this Tensor t, string? fltFormat = "g5", int? width = 100, string? newLine = "\n", CultureInfo? cultureInfo = null, TensorStringStyle style = TensorStringStyle.Default)
         {
             Console.WriteLine(t.ToString(style, fltFormat, width, cultureInfo, newLine));
             return t;

test/TorchSharpTest/TestTorchTensor.cs

@@ -282,6 +282,29 @@ public void TestToString1()
             Assert.Equal("[2x2], type = Float32, device = cpu", str);
         }
 
+        [Fact]
+        [TestOf(nameof(TensorExtensionMethods.print))]
+        public void TestTensorDefaultPrint()
+        {
+            Tensor t = torch.zeros(2, 2);
+            string expectedOutput = t.ToString(TensorStringStyle.Default, "g5", 100, null, "\n") + Environment.NewLine;
+            var originalOut = Console.Out;
+            using (var sw = new StringWriter())
+            {
+                try 
+                {
+                    Console.SetOut(sw);
+                    t.print();
+                    var result = sw.ToString();
+                    Assert.Equal(expectedOutput, result);
+                }
+                finally 
+                {
+                    Console.SetOut(originalOut);
+                }
+            }
+        }
+
         [Fact]
         [TestOf(nameof(Tensor.ToString))]
         public void Test1DToCSharpString()