added the module for testing gpu, by default turned off

tests/gpu/src/operator_set_to.cpp

@@ -0,0 +1,70 @@
+#include "gputest.hpp"
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <iterator>
+#include <limits>
+#include <numeric>
+
+using namespace cv;
+using namespace std;
+using namespace gpu;
+
+class CV_GpuMatOpSetTo : public CvTest
+{
+    public:
+        CV_GpuMatOpSetTo();
+        ~CV_GpuMatOpSetTo();
+    protected:
+        void print_mat(cv::Mat & mat);
+        void run(int);
+};
+
+CV_GpuMatOpSetTo::CV_GpuMatOpSetTo(): CvTest( "GpuMatOperatorSetTo", "setTo" ) {}
+CV_GpuMatOpSetTo::~CV_GpuMatOpSetTo() {}
+
+void CV_GpuMatOpSetTo::print_mat(cv::Mat & mat)
+{
+    for (size_t j = 0; j < mat.rows; j++)
+    {
+        for (size_t i = 0; i < mat.cols; i++)
+        {
+            std::cout << " " << int(mat.ptr<unsigned char>(j)[i]);
+        }
+        std::cout << std::endl;
+    }
+    std::cout << std::endl;
+}
+
+void CV_GpuMatOpSetTo::run( int /* start_from */)
+{
+    Mat cpumat(1024, 1024, CV_8U, Scalar::all(0));
+    GpuMat gpumat(cpumat);
+
+    Scalar s(3);
+
+    cpumat.setTo(s);
+    gpumat.setTo(s);
+
+    double ret = norm(cpumat, gpumat);
+
+    /*
+    std::cout << "norm() = " << ret << "\n";
+
+    std::cout << "cpumat: \n";
+    print_mat(cpumat);
+
+    Mat newmat;
+    gpumat.download(newmat);
+
+    std::cout << "gpumat: \n";
+    print_mat(newmat);
+    */
+
+    if (ret < 1.0)
+        ts->set_failed_test_info(CvTS::OK);
+    else
+        ts->set_failed_test_info(CvTS::FAIL_GENERIC);
+}
+
+CV_GpuMatOpSetTo CV_GpuMatOpSetTo_test;