Added more unit tests

Author: akamsteeg

src/AtleX.CommandLineArguments.Tests/CommandLineArgumentsTests.cs

@@ -1,8 +1,6 @@
 using AtleX.CommandLineArguments.Tests.Mocks;
 using NUnit.Framework;
 using System;
-using AtleX.CommandLineArguments.Validators;
-using System.Collections.Generic;
 
 namespace AtleX.CommandLineArguments.Tests
 {
@@ -12,15 +10,33 @@ public class CommandLineArgumentsTests
     [Test]
     public void TryParse_ArgumentsNull_Throws()
     {
-      Assert.Throws<ArgumentNullException>(() => CommandLineArguments.TryParse<TestArguments>(null, out TestArguments a));
+      Assert.Throws<ArgumentNullException>(() => CommandLineArguments.TryParse<TestArguments>(null, out _));
     }
 
     [Test]
     public void TryParse_WithoutConfiguration_Throws()
     {
+      var oldConfig = CommandLineArguments.Configuration;
+
       CommandLineArguments.Configuration = null;
 
-      Assert.Throws<InvalidOperationException>(() => CommandLineArguments.TryParse<TestArguments>(new string[0], out TestArguments a));
+      Assert.Throws<InvalidOperationException>(() => CommandLineArguments.TryParse<TestArguments>(new string[0], out _));
+
+      CommandLineArguments.Configuration = oldConfig; // The beauty of static, we need to restore the configuration
+    }
+
+    [Test]
+    public void TryParse_WithEmptyArgumentsAndDefaultConfiguration_Succeeds()
+    {
+      Assert.DoesNotThrow(() => CommandLineArguments.TryParse<TestArguments>(new string[0], out _));
+    }
+
+    [Test]
+    public void TryParse_WithUnknownArgumentsAndDefaultConfiguration_Succeeds()
+    {
+      var cliArgs = new string[] { "lorem", "ipsum" };
+
+      Assert.DoesNotThrow(() => CommandLineArguments.TryParse<TestArguments>(cliArgs, out _));
     }
   }
 }

src/AtleX.CommandLineArguments.Tests/Parsers/CommandLineArgumentsParserTests.cs

@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using AtleX.CommandLineArguments.Validators;
 using AtleX.CommandLineArguments.Parsers.TypeParsers;
+using System.Linq;
 
 namespace AtleX.CommandLineArguments.Tests.Parsers
 {
@@ -60,8 +61,10 @@ public void CommandLineArgumentsTryParse_ValidArguments()
 
       var arguments = CreateValidArguments();
 
-      var result = CommandLineArguments.TryParse<TestArguments>(arguments, out TestArguments parsedArguments);
+      var result = CommandLineArguments.TryParse<TestArguments>(arguments, out var parsedArguments, out var validationErrors);
+
       Assert.IsTrue(result);
+      Assert.IsFalse(validationErrors.Any());
       AssertValidArguments(parsedArguments);
     }