Factorize VERIFY_EVALUATION_COUNT in unit tests

1 files changed, 20 insertions, 0 deletions

diff --git a/test/main.h b/test/main.h
index 04c6722a4..ef471acc8 100644
--- a/test/main.h
+++ b/test/main.h
@@ -69,6 +69,26 @@
 // shuts down ICC's remark #593: variable "XXX" was set but never used
 #define TEST_SET_BUT_UNUSED_VARIABLE(X) EIGEN_UNUSED_VARIABLE(X)
 
+#ifdef TEST_ENABLE_TEMPORARY_TRACKING
+
+static long int nb_temporaries;
+
+inline void on_temporary_creation(long int size) {
+  // here's a great place to set a breakpoint when debugging failures in this test!
+  if(size!=0) nb_temporaries++;
+}
+
+#define EIGEN_DENSE_STORAGE_CTOR_PLUGIN { on_temporary_creation(size); }
+
+#define VERIFY_EVALUATION_COUNT(XPR,N) {\
+    nb_temporaries = 0; \
+    XPR; \
+    if(nb_temporaries!=N) std::cerr << "nb_temporaries == " << nb_temporaries << "\n"; \
+    VERIFY( (#XPR) && nb_temporaries==N ); \
+  }
+  
+#endif
+
 // the following file is automatically generated by cmake
 #include "split_test_helper.h"