Add test that covers including command line arguments in the comments

Author: 0xced

XmlSchemaClassGenerator.Tests/XmlTests.cs

@@ -56,7 +56,9 @@ private static IEnumerable<string> ConvertXml(string name, IEnumerable<string> x
                 CodeTypeReferenceOptions = generatorPrototype.CodeTypeReferenceOptions,
                 DoNotForceIsNullable = generatorPrototype.DoNotForceIsNullable,
                 CreateGeneratedCodeAttributeVersion = generatorPrototype.CreateGeneratedCodeAttributeVersion,
-                NetCoreSpecificCode = generatorPrototype.NetCoreSpecificCode
+                NetCoreSpecificCode = generatorPrototype.NetCoreSpecificCode,
+                GenerateCommandLineArgumentsComment = generatorPrototype.GenerateCommandLineArgumentsComment,
+                CommandLineArgumentsProvider = generatorPrototype.CommandLineArgumentsProvider,
             };
 
             gen.CommentLanguages.Clear();
@@ -2388,5 +2390,64 @@ void UnknownAttributeHandler(object sender, XmlAttributeEventArgs e)
                 AssertEx.Equal(deserializedObject, deserializedXml);
             }
         }
+
+        [Theory]
+        [InlineData("fake command line arguments", "fake command line arguments")]
+        [InlineData(null, "N/A")]
+        public void IncludeCommandLineArguments(string commandLineArguments, string expectedCommandLineArguments)
+        {
+            const string xsd = @"<?xml version=""1.0"" encoding=""UTF-8""?>
+<xs:schema elementFormDefault=""qualified"" xmlns:xs=""http://www.w3.org/2001/XMLSchema"" targetNamespace=""http://local.none"" xmlns:l=""http://local.none"">
+	<xs:element name=""document"" type=""l:elem"" />
+	<xs:complexType name=""elem"">
+		<xs:attribute name=""Text"" type=""xs:string""/>
+	</xs:complexType>
+</xs:schema>";
+
+            var generator = new Generator
+            {
+                GenerateInterfaces = false,
+                NamespaceProvider = new NamespaceProvider
+                {
+                    GenerateNamespace = key => "Test"
+                },
+                GenerateCommandLineArgumentsComment = true,
+                CommandLineArgumentsProvider = new CommandLineArgumentsProvider(commandLineArguments)
+            };
+
+            var contents = ConvertXml(nameof(IncludeCommandLineArguments), xsd, generator);
+
+            var csharp = Assert.Single(contents);
+
+            CompareOutput(
+                $@"//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+// This code was generated by Tests version 1.0.0.1 using the following command:
+// {expectedCommandLineArguments}
+namespace Test
+{{
+    
+    
+    [System.CodeDom.Compiler.GeneratedCodeAttribute(""Tests"", ""1.0.0.1"")]
+    [System.SerializableAttribute()]
+    [System.Xml.Serialization.XmlTypeAttribute(""elem"", Namespace=""http://local.none"")]
+    [System.ComponentModel.DesignerCategoryAttribute(""code"")]
+    [System.Xml.Serialization.XmlRootAttribute(""document"", Namespace=""http://local.none"")]
+    public partial class Elem
+    {{
+        
+        [System.Xml.Serialization.XmlAttributeAttribute(""Text"")]
+        public string Text {{ get; set; }}
+    }}
+}}
+", csharp);
+        }
     }
 }

XmlSchemaClassGenerator/CommandLineArgumentsProvider.cs

@@ -9,7 +9,7 @@ public class CommandLineArgumentsProvider
     {
         public CommandLineArgumentsProvider(string commandLineArguments)
         {
-            CommandLineArguments = commandLineArguments ?? throw new ArgumentNullException(nameof(commandLineArguments));
+            CommandLineArguments = commandLineArguments;
         }
 
         public string CommandLineArguments { get; }