Hexadecimal Printing in Test Fail messages about googletest HOT 1 CLOSED

ASSERT/EXPECT_EQ prints its arguments by streaming to ostream (see 
http://code.google.com/p/googletest/wiki/GoogleTestPrimer). The ostream by 
default formats integers in decimal format. You can either define a class such 
as this:

class Hex {
 public:
  explicit Hex(int n) : number_(n) {}
  operator int() { return number; }

 private:
  int number_;
};

then define an operator to stream Hex as a hexadecimal and then 
EXPECT_EQ(Hex(expected), Hex(actual)) will print values in hexadecimal.

If you prefer a more robust approach (and not typing Hex everywhere), you can 
write 
a macro that prints comparison values in hex. See 
http://code.google.com/p/googletest/wiki/GoogleTestAdvancedGuide#Using_a_Pred
icate-Formatter for more details.