Verify that an expression does not throw any exception.

Used in: A test function body, the constructor or destructor of a fixture, or a function called from them. See TEST(name, ...).

Requirement: expr; can be used as a complete statement.

The check succeeds if, and only if, the statement expr; does not throw any exception.

On success the test function continues without side effects.

On failure the test is marked as failed, but continues execution with an error report. The report includes the exact expression text and, if the exception inherits from std::exception the string from the virtual member function std::exception::what(), or a generic message otherwise.

See also: ASSERT_NO_THROW(expr)

Example: The test program

     
     #include <crpcut.hpp>
     #include <stdexcept>
     class type {};
     
     TEST(verify_no_throw_succeeds)
     {
       int n = 0;
       VERIFY_NO_THROW(n+=3);
     }
     
     TEST(assert_no_throw_fails)
     {
       VERIFY_NO_THROW(throw type());
       VERIFY_NO_THROW(throw std::range_error("haha!!"));
     }
     
     int main(int argc, char *argv[])
     {
       return crpcut::run(argc, argv);
     }

      

reports one failed test with two failed VERIFY_NO_THROW() checks:

     FAILED!: assert_no_throw_fails
     fail---------------------------------------------------------------------------
     samples/verify_no_throw_fails.cpp:40
     VERIFY_NO_THROW(throw type())
       caught ...
     -------------------------------------------------------------------------------
     fail---------------------------------------------------------------------------
     samples/verify_no_throw_fails.cpp:41
     VERIFY_NO_THROW(throw std::range_error("haha!!"))
       caught std::exception
     	what()=haha!!
     -------------------------------------------------------------------------------
     phase="running"  --------------------------------------------------------------
     samples/verify_no_throw_fails.cpp:38
     Earlier VERIFY failed
     -------------------------------------------------------------------------------
     ===============================================================================
     2 test cases selected
     
                    Sum   Critical   Non-critical
     PASSED   :       1          1              0
     FAILED   :       1          1              0