diff --git a/modules/core/test/test_ds.cpp b/modules/core/test/test_ds.cpp
index adc8f1a42c..ded52583a2 100644
--- a/modules/core/test/test_ds.cpp
+++ b/modules/core/test/test_ds.cpp
@@ -493,6 +493,7 @@ class Core_SeqBaseTest : public Core_DynStructBaseTest
 {
 public:
     Core_SeqBaseTest();
+    virtual ~Core_SeqBaseTest();
     void clear();
     void run( int );
 
@@ -503,11 +504,14 @@ protected:
     int test_seq_ops( int iters );
 };
 
-
 Core_SeqBaseTest::Core_SeqBaseTest()
 {
 }
 
+Core_SeqBaseTest::~Core_SeqBaseTest()
+{
+    clear();
+}
 
 void Core_SeqBaseTest::clear()
 {
@@ -1208,6 +1212,7 @@ class Core_SetTest : public Core_DynStructBaseTest
 {
 public:
     Core_SetTest();
+    virtual ~Core_SetTest();
     void clear();
     void run( int );
 
@@ -1221,6 +1226,10 @@ Core_SetTest::Core_SetTest()
 {
 }
 
+Core_SetTest::~Core_SetTest()
+{
+    clear();
+}
 
 void Core_SetTest::clear()
 {
@@ -1419,6 +1428,7 @@ class Core_GraphTest : public Core_DynStructBaseTest
 {
 public:
     Core_GraphTest();
+    virtual ~Core_GraphTest();
     void clear();
     void run( int );
 
@@ -1432,6 +1442,10 @@ Core_GraphTest::Core_GraphTest()
 {
 }
 
+Core_GraphTest::~Core_GraphTest()
+{
+    clear();
+}
 
 void Core_GraphTest::clear()
 {
@@ -2044,6 +2058,8 @@ void Core_GraphScanTest::run( int )
                 CV_TS_SEQ_CHECK_CONDITION( vtx_count == 0 && edge_count == 0,
                                           "Not every vertex/edge has been visited" );
                 update_progressbar();
+
+                cvReleaseGraphScanner( &scanner );
             }
 
             // for a random graph the test just checks that every graph vertex and
@@ -2108,8 +2124,6 @@ void Core_GraphScanTest::run( int )
     catch(int)
     {
     }
-
-    cvReleaseGraphScanner( &scanner );
 }
 
 
diff --git a/modules/features2d/test/test_nearestneighbors.cpp b/modules/features2d/test/test_nearestneighbors.cpp
index 8d1ecfd79a..2c64e648f2 100644
--- a/modules/features2d/test/test_nearestneighbors.cpp
+++ b/modules/features2d/test/test_nearestneighbors.cpp
@@ -65,13 +65,13 @@ protected:
     virtual void run( int start_from );
     virtual void createModel( const Mat& data ) = 0;
     virtual int findNeighbors( Mat& points, Mat& neighbors ) = 0;
-    virtual int checkGetPoins( const Mat& data );
+    virtual int checkGetPoints( const Mat& data );
     virtual int checkFindBoxed();
     virtual int checkFind( const Mat& data );
     virtual void releaseModel() = 0;
 };
 
-int NearestNeighborTest::checkGetPoins( const Mat& )
+int NearestNeighborTest::checkGetPoints( const Mat& )
 {
    return cvtest::TS::OK;
 }
@@ -129,7 +129,7 @@ void NearestNeighborTest::run( int /*start_from*/ ) {
 
     createModel( desc );
 
-    tempCode = checkGetPoins( desc );
+    tempCode = checkGetPoints( desc );
     if( tempCode != cvtest::TS::OK )
     {
         ts->printf( cvtest::TS::LOG, "bad accuracy of GetPoints \n" );
@@ -162,7 +162,7 @@ public:
     CV_KDTreeTest_CPP() {}
 protected:
     virtual void createModel( const Mat& data );
-    virtual int checkGetPoins( const Mat& data );
+    virtual int checkGetPoints( const Mat& data );
     virtual int findNeighbors( Mat& points, Mat& neighbors );
     virtual int checkFindBoxed();
     virtual void releaseModel();
@@ -175,7 +175,7 @@ void CV_KDTreeTest_CPP::createModel( const Mat& data )
     tr = new KDTree( data, false );
 }
 
-int CV_KDTreeTest_CPP::checkGetPoins( const Mat& data )
+int CV_KDTreeTest_CPP::checkGetPoints( const Mat& data )
 {
     Mat res1( data.size(), data.type() ),
         res3( data.size(), data.type() );
diff --git a/modules/imgproc/test/test_cvtyuv.cpp b/modules/imgproc/test/test_cvtyuv.cpp
index 0cce64cdba..5db4972692 100644
--- a/modules/imgproc/test/test_cvtyuv.cpp
+++ b/modules/imgproc/test/test_cvtyuv.cpp
@@ -548,7 +548,7 @@ void referenceRGB2YUV(const Mat& rgb, Mat& yuv, RGBreader* rgbReader, YUVwriter*
 
 struct ConversionYUV
 {
-    ConversionYUV( const int code )
+    explicit ConversionYUV( const int code )
     {
         yuvReader_  = YUVreader :: getReader(code);
         yuvWriter_  = YUVwriter :: getWriter(code);
@@ -557,6 +557,24 @@ struct ConversionYUV
         grayWriter_ = GRAYwriter:: getWriter(code);
     }
 
+    ~ConversionYUV()
+    {
+        if (yuvReader_)
+            delete yuvReader_;
+
+        if (yuvWriter_)
+            delete yuvWriter_;
+
+        if (rgbReader_)
+            delete rgbReader_;
+
+        if (rgbWriter_)
+            delete rgbWriter_;
+
+        if (grayWriter_)
+            delete grayWriter_;
+    }
+
     int getDcn()
     {
         return (rgbWriter_ != 0) ? rgbWriter_->channels() : ((grayWriter_ != 0) ? grayWriter_->channels() : yuvWriter_->channels());
diff --git a/modules/imgproc/test/test_floodfill.cpp b/modules/imgproc/test/test_floodfill.cpp
index e46e9e120c..8293a12afd 100644
--- a/modules/imgproc/test/test_floodfill.cpp
+++ b/modules/imgproc/test/test_floodfill.cpp
@@ -501,6 +501,8 @@ _exit_:
     comp[6] = s1;
     comp[7] = s2;
     comp[8] = 0;
+
+    cvReleaseMemStorage(&st);
 }
 
 
diff --git a/modules/imgproc/test/test_imgwarp.cpp b/modules/imgproc/test/test_imgwarp.cpp
index 705bf0a7bc..99cffbc37d 100644
--- a/modules/imgproc/test/test_imgwarp.cpp
+++ b/modules/imgproc/test/test_imgwarp.cpp
@@ -1426,6 +1426,9 @@ TEST(Imgproc_cvWarpAffine, regression)
     int h = src->height;
     cv2DRotationMatrix(cvPoint2D32f(w*0.5f, h*0.5f), 45.0, 1.0, &M);
     cvWarpAffine(src, dst, &M);
+
+    cvReleaseImage(&src);
+    cvReleaseImage(&dst);
 }
 
 TEST(Imgproc_fitLine_vector_3d, regression)
diff --git a/modules/ts/src/ts.cpp b/modules/ts/src/ts.cpp
index ee8f01171f..bfeae74bb2 100644
--- a/modules/ts/src/ts.cpp
+++ b/modules/ts/src/ts.cpp
@@ -323,6 +323,7 @@ BadArgTest::BadArgTest()
     progress        = -1;
     test_case_idx   = -1;
     freq            = cv::getTickFrequency();
+    t               = -1;
     // oldErrorCbk     = 0;
     // oldErrorCbkData = 0;
 }
@@ -338,6 +339,7 @@ int BadArgTest::run_test_case( int expected_code, const string& _descr )
     {
         test_case_idx = 0;
         progress      = 0;
+        t             = 0;
         dt            = 0;
     }
     else