fixed #1373

modules/imgproc/test/test_imgwarp.cpp

@@ -1385,6 +1385,83 @@ TEST(Imgproc_cvWarpAffine, regression)
     cvWarpAffine(src, dst, &M);
 }
 
+TEST(Imgproc_fitLine_vector_3d, regression)
+{
+    std::vector<Point3f> points_vector;
+
+    Point3f p21(4,4,4);
+    Point3f p22(8,8,8);
+
+    points_vector.push_back(p21);
+    points_vector.push_back(p22);
+
+    std::vector<float> line;
+
+    cv::fitLine(points_vector, line, CV_DIST_L2, 0 ,0 ,0);
+
+    ASSERT_EQ(line.size(), (size_t)6);
+
+}
+
+TEST(Imgproc_fitLine_vector_2d, regression)
+{
+    std::vector<Point2f> points_vector;
+
+    Point2f p21(4,4);
+    Point2f p22(8,8);
+    Point2f p23(16,16);
+
+    points_vector.push_back(p21);
+    points_vector.push_back(p22);
+    points_vector.push_back(p23);   
+
+    std::vector<float> line;
+
+    cv::fitLine(points_vector, line, CV_DIST_L2, 0 ,0 ,0);
+
+    ASSERT_EQ(line.size(), (size_t)4);
+}
+
+TEST(Imgproc_fitLine_Mat_2dC2, regression)
+{
+    cv::Mat mat1(3, 1, CV_32SC2);
+    std::vector<float> line1;
+
+    cv::fitLine(mat1, line1, CV_DIST_L2, 0 ,0 ,0);
+
+    ASSERT_EQ(line1.size(), (size_t)4);
+}
+
+TEST(Imgproc_fitLine_Mat_2dC1, regression)
+{
+    cv::Matx<int, 3, 2> mat2;
+    std::vector<float> line2;
+
+    cv::fitLine(mat2, line2, CV_DIST_L2, 0 ,0 ,0);
+
+    ASSERT_EQ(line2.size(), (size_t)4);
+}
+
+TEST(Imgproc_fitLine_Mat_3dC3, regression)
+{
+    cv::Mat mat1(2, 1, CV_32SC3);
+    std::vector<float> line1;
+
+    cv::fitLine(mat1, line1, CV_DIST_L2, 0 ,0 ,0);
+
+    ASSERT_EQ(line1.size(), (size_t)6);
+}
+
+TEST(Imgproc_fitLine_Mat_3dC1, regression)
+{
+    cv::Mat mat2(2, 3, CV_32SC1);
+    std::vector<float> line2;
+
+    cv::fitLine(mat2, line2, CV_DIST_L2, 0 ,0 ,0);
+
+    ASSERT_EQ(line2.size(), (size_t)6);
+}
+
 //////////////////////////////////////////////////////////////////////////
 
 TEST(Imgproc_Resize, accuracy) { CV_ResizeTest test; test.safe_run(); }