Add a test

Author: couet

hist/hist/test/CMakeLists.txt

@@ -28,6 +28,7 @@ ROOT_ADD_GTEST(testMapCppName test_MapCppName.cxx LIBRARIES Hist Gpad)
 ROOT_ADD_GTEST(testTGraphSorting test_TGraph_sorting.cxx LIBRARIES Hist)
 ROOT_ADD_GTEST(testSpline test_spline.cxx LIBRARIES Hist)
 ROOT_ADD_GTEST(testTF1Simple test_tf1_simple.cxx LIBRARIES Hist RIO)
+ROOT_ADD_GTEST(testTF1DrawCopy test_tf1_drawcopy.cxx LIBRARIES Hist)
 
 if(fftw3)
   ROOT_ADD_GTEST(testTF1 test_tf1.cxx LIBRARIES Hist)

hist/hist/test/test_tf1_drawcopy.cxx

@@ -0,0 +1,12 @@
+#include "TF1.h"
+#include "TAxis.h"
+
+#include "gtest/gtest.h"
+
+// issue #13122
+TEST(TF1, DrawCopy) {
+   auto f = new TF1("f", "x*x", -3, 3);
+   f->GetXaxis()->SetTitle("xtitle");
+   auto fcopy = f->DrawCopy();
+   EXPECT_STREQ("xtitle", fcopy->GetXaxis()->GetTitle());
+}