1.6 KiB
Logging macros
Additional messages can be logged during a test case.
Streaming macros
All these macros allow heterogenous sequences of values to be streaming using the insertion operator (<<) in the same way that std::ostream, std::cout, etc support it.
E.g.:
INFO( "The number is " << i );
(Note that there is no initial << - instead the insertion sequence is placed in parentheses.)
These macros come in three forms:
INFO( message expression )
The message is logged to a buffer, but only reported if a subsequent failure occurs within the same test case. This allows you to log contextual information in case of failures which is not shown during a successful test run. The buffer is cleared on the next successful assertion.
SCOPED_INFO( message expression )
As INFO, but is only in effect during the current scope. If a failure occurs beyond the end of the scope the message is not logged. In a looped block the message is reset on each iteration.
WARN( message expression )
The message is always reported.
FAIL( message expression )
The message is reported and the test case fails.
Quickly capture a variable value
CAPTURE( expression )
Sometimes you just want to log the name and value of a variable. While you can easily do this with the INFO macro, above, as a convenience the CAPTURE macro handles the stringising of the variable name for you (actually it works with any expression, not just variables).
E.g.
CAPTURE( theAnswer );
This would log something like:
"theAnswer := 42"