What is the best unit testing tool for a mix of managed and unmanaged C++?

I am going to start implementing some unit tests for a codebase that is a mix of managed and unmanaged C++. Can NUnit hack it with unmanaged code? Is there a better alternative?

From stackoverflow

• It's possible to use NUnit to test unmanaged code, example:

  // Tests.h
  
  #pragma once
  
  #include <cmath>
  
  using namespace System;
  using namespace NUnit::Framework;
  
  namespace Tests {
  
      [TestFixture]
      public ref class UnitTest
      {
      public:
       UnitTest(void) {}
  
       [Test]
       void TestCos()
       {
        Assert::AreEqual(1, cos(0.0));
       }
  
      };
  }
  

• NUnit will work fine with unmanaged code as long as you write the unit tests in managed C++. The outside wrapper will be NUnit friendly and can access the unmanaged parts.