removed catch from GPU stereo_bp test as --gtest_catch_exceptions flags exists…

removed catch from GPU stereo_bp test as --gtest_catch_exceptions flags exists (but err msg isn't printed in case when there is no GPU)

modules/gpu/test/test_main.cpp

 #include "test_precomp.hpp"
 
+// Run test with --gtest_catch_exceptions flag to avoid runtime errors in 
+// the case when there is no GPU
 CV_TEST_MAIN("gpu")
+
+// TODO Add other tests from tests/gpu folder
+// TODO When there is no GPU test system doesn't print error message: it fails or keeps 
+//      quiet when --gtest_catch_exceptions is enabled

modules/gpu/test/test_stereo_bp.cpp

@@ -43,7 +43,7 @@
 
 struct CV_GpuStereoBPTest : public cvtest::BaseTest
 {
-    void run(int )
+    void run(int)
     {
         cv::Mat img_l = cv::imread(std::string(ts->get_data_path()) + "stereobp/aloe-L.png");
         cv::Mat img_r = cv::imread(std::string(ts->get_data_path()) + "stereobp/aloe-R.png");
@@ -55,13 +55,11 @@ struct CV_GpuStereoBPTest : public cvtest::BaseTest
             return;
         }
 
-        try
-        {
         {cv::Mat temp; cv::cvtColor(img_l, temp, CV_BGR2BGRA); cv::swap(temp, img_l);}
         {cv::Mat temp; cv::cvtColor(img_r, temp, CV_BGR2BGRA); cv::swap(temp, img_r);}
 
-            cv::gpu::GpuMat disp;
         cv::gpu::StereoBeliefPropagation bpm(64, 8, 2, 25, 0.1f, 15, 1, CV_16S);
+        cv::gpu::GpuMat disp;
 
         bpm(cv::gpu::GpuMat(img_l), cv::gpu::GpuMat(img_r), disp);
 
@@ -76,13 +74,6 @@ struct CV_GpuStereoBPTest : public cvtest::BaseTest
 	        ts->set_failed_test_info(cvtest::TS::FAIL_GENERIC);
 	        return;
         }
-	}
-	catch(const cv::Exception& e)
-	{
-	    if (!check_and_treat_gpu_exception(e, ts))
-		throw;
-	    return;
-	}
 
         ts->set_failed_test_info(cvtest::TS::OK);
     }