preview of single unit test for dotnet build

test/dotnet-msbuild.Tests/GivenDotnetBuildInvocation.cs

@@ -0,0 +1,21 @@
+using Microsoft.DotNet.Tools.Build;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using FluentAssertions;
+using Xunit;
+using System.IO;
+
+namespace Microsoft.DotNet.Cli.MSBuild.Tests
+{
+    public class GivenDotnetBuildInvocation
+    {
+        [Fact]
+        public void WhenNoArgsArePassedThenMsbuildInvocationIsCorrect()
+        {
+            var msbuildPath = Path.Combine(Directory.GetCurrentDirectory(), "MSBuild.dll");
+            BuildCommand.FromArgs()
+                .GetProcessStartInfo().Arguments.Should().Be($@"exec {msbuildPath} /m /v:m /t:Build /clp:Summary");
+        }
+    }
+}