//[example_output
> example
Running 1 test case...
test.cpp(11): error in "test": check { col1, col1+7 } == { col2, col2+7 } has failed. 
Mismatch in a position 2: 3 != 4
Mismatch in a position 5: 6 != 7

*** 1 failures is detected in test suite "example"
//]