text: /*
  //@HEADER
  // ************************************************************************
  //
  //                        Kokkos v. 2.0
  //              Copyright (2014) Sandia Corporation
  //
  // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  // the U.S. Government retains certain rights in this software.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  // 1. Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright
  // notice, this list of conditions and the following disclaimer in the
  // documentation and/or other materials provided with the distribution.
  //
  // 3. Neither the name of the Corporation nor the names of the
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
  // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // Questions? Contact Christian R. Trott (crtrott@sandia.gov)
  //
  // ************************************************************************
  //@HEADER
  */
  
  #include <cstdio>
  
  #include <gtest/gtest.h>
  
  #include <Kokkos_Core.hpp>
  #include <Kokkos_DynRankView.hpp>
  
  #include <type_traits>
  #include <typeinfo>
  
  namespace Test {
  
  namespace {
  
  template <typename ExecSpace >
  struct TestViewCtorProp_EmbeddedDim {
  
    using ViewIntType     = typename Kokkos::View< int**, ExecSpace >;
    using ViewDoubleType     = typename Kokkos::View< double*, ExecSpace >;
  
    using DynRankViewIntType     = typename Kokkos::DynRankView< int, ExecSpace >;
    using DynRankViewDoubleType     = typename Kokkos::DynRankView< double, ExecSpace >;
  
    // Cuda 7.0 has issues with using a lamda in parallel_for to initialize the view - replace with this functor
    template < class ViewType >
    struct Functor {
  
      ViewType v;
  
      Functor( const ViewType & v_ ) : v(v_) {}
  
      KOKKOS_INLINE_FUNCTION
      void operator()( const int i ) const {
        v(i) = i;
      }
  
    };
  
  
    static void test_vcpt( const int N0, const int N1 )
    {
  
      // Create two views to test
      {
        using VIT = typename TestViewCtorProp_EmbeddedDim::ViewIntType ;
        using VDT = typename TestViewCtorProp_EmbeddedDim::ViewDoubleType ;
  
        VIT vi1("vi1", N0, N1);
        VDT vd1("vd1", N0);
  
        // TEST: Test for common type between two views, one with type double, other with type int
        // Deduce common value_type and construct a view with that type
        {
          // Two views
          auto view_alloc_arg = Kokkos::common_view_alloc_prop(vi1, vd1);
          typedef typename decltype( view_alloc_arg )::value_type                    CommonViewValueType;
          typedef typename Kokkos::View< CommonViewValueType*, ExecSpace >  CVT;
          typedef typename CVT::HostMirror                                           HostCVT;
  
          // Construct View using the common type; for case of specialization, an 'embedded_dim' would be stored by view_alloc_arg
          CVT cv1( Kokkos::view_alloc( "cv1", view_alloc_arg ), N0*N1 );
  
          Kokkos::parallel_for( Kokkos::RangePolicy< ExecSpace >(0, N0*N1), 
            Functor<CVT>(cv1)
          );
  
          HostCVT hcv1 = Kokkos::create_mirror_view( cv1 );
          Kokkos::deep_copy( hcv1, cv1 );
  
          ASSERT_EQ( (std::is_same< CommonViewValueType, double >::value) , true ) ;
        #if 0
        // debug output
        for ( int i = 0; i < N0*N1; ++i ) {
          printf(" Output check: hcv1(%d) = %lf\n ", i, hcv1(i) );
        }
  
        printf( " Common value type view: %s \n", typeid( CVT() ).name() );
        printf( " Common value type: %s \n", typeid( CommonViewValueType() ).name() );
        if ( std::is_same< CommonViewValueType, double >::value == true ) {
          printf("Proper common value_type\n");
        }
        else {
          printf("WRONG common value_type\n");
        }
        // end debug output
        #endif
        }
  
        {
          // Single view
          auto view_alloc_arg = Kokkos::common_view_alloc_prop(vi1);
          typedef typename decltype( view_alloc_arg )::value_type                    CommonViewValueType;
          typedef typename Kokkos::View< CommonViewValueType*, ExecSpace >  CVT;
          typedef typename CVT::HostMirror                                           HostCVT;
  
          // Construct View using the common type; for case of specialization, an 'embedded_dim' would be stored by view_alloc_arg
          CVT cv1( Kokkos::view_alloc( "cv1", view_alloc_arg ), N0*N1 );
  
          Kokkos::parallel_for( Kokkos::RangePolicy< ExecSpace >(0, N0*N1), 
            Functor<CVT>(cv1)
          );
  
          HostCVT hcv1 = Kokkos::create_mirror_view( cv1 );
          Kokkos::deep_copy( hcv1, cv1 );
  
          ASSERT_EQ( (std::is_same< CommonViewValueType, int>::value) , true ) ;
        }
  
      }
  
      // Create two dynamic rank views to test
      {
        using VIT = typename TestViewCtorProp_EmbeddedDim::DynRankViewIntType ;
        using VDT = typename TestViewCtorProp_EmbeddedDim::DynRankViewDoubleType ;
  
        VIT vi1("vi1", N0, N1);
        VDT vd1("vd1", N0);
  
        // TEST: Test for common type between two views, one with type double, other with type int
        // Deduce common value_type and construct a view with that type
        {
          // Two views
          auto view_alloc_arg = Kokkos::common_view_alloc_prop( vi1, vd1 );
          typedef typename decltype( view_alloc_arg )::value_type                    CommonViewValueType;
          typedef typename Kokkos::View< CommonViewValueType*, ExecSpace >  CVT;
          typedef typename CVT::HostMirror                                           HostCVT;
  
          // Construct View using the common type; for case of specialization, an 'embedded_dim' would be stored by view_alloc_arg
          CVT cv1( Kokkos::view_alloc( "cv1", view_alloc_arg ), N0*N1 );
  
  
          Kokkos::parallel_for( Kokkos::RangePolicy< ExecSpace >(0, N0*N1), 
            Functor<CVT>(cv1)
          );
  
          HostCVT hcv1 = Kokkos::create_mirror_view( cv1 );
          Kokkos::deep_copy( hcv1, cv1 );
  
          ASSERT_EQ( (std::is_same< CommonViewValueType, double >::value) , true ) ;
        }
  
        {
          // Single views
          auto view_alloc_arg = Kokkos::common_view_alloc_prop( vi1 );
          typedef typename decltype( view_alloc_arg )::value_type                    CommonViewValueType;
          typedef typename Kokkos::View< CommonViewValueType*, ExecSpace >  CVT;
          typedef typename CVT::HostMirror                                           HostCVT;
  
          // Construct View using the common type; for case of specialization, an 'embedded_dim' would be stored by view_alloc_arg
          CVT cv1( Kokkos::view_alloc( "cv1", view_alloc_arg ), N0*N1 );
  
          Kokkos::parallel_for( Kokkos::RangePolicy< ExecSpace >(0, N0*N1), 
            Functor<CVT>(cv1)
          );
  
          HostCVT hcv1 = Kokkos::create_mirror_view( cv1 );
          Kokkos::deep_copy( hcv1, cv1 );
  
          ASSERT_EQ( (std::is_same< CommonViewValueType, int>::value) , true ) ;
        }
      }
  
  
    } // end test_vcpt
  
  }; // end struct
  
  } // namespace
  
  TEST_F( TEST_CATEGORY, viewctorprop_embedded_dim ) {
    TestViewCtorProp_EmbeddedDim< TEST_EXECSPACE >::test_vcpt( 2, 3 );
  }
  } // namespace Test
  