Refactor (#56)

CliFx.Tests/Internal/CommandHelper.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+using CliFx.Domain;
+
+namespace CliFx.Tests.Internal
+{
+    internal static class CommandHelper
+    {
+        public static TCommand ResolveCommand<TCommand>(CommandInput input, IReadOnlyDictionary<string, string> environmentVariables)
+            where TCommand : ICommand, new()
+        {
+            var schema = CommandSchema.TryResolve(typeof(TCommand))!;
+
+            var instance = new TCommand();
+            schema.Bind(instance, input, environmentVariables);
+
+            return instance;
+        }
+
+        public static TCommand ResolveCommand<TCommand>(CommandInput input)
+            where TCommand : ICommand, new() =>
+            ResolveCommand<TCommand>(input, new Dictionary<string, string>());
+    }
+}