Looks for files in current directory with names like:
input01.txt
input02.txt
output01.txt
output02.txt
And executes binary file (a.out or specified as a first argument) on each of
the input file contents, comparing output with corresponding output file
contents. Reports number of failures/successes.
$ ls
a.out input02.txt input04.txt input06.txt output02.txt output04.txt output06.txt
input01.txt input03.txt input05.txt output01.txt output03.txt output05.txt
$ contest_runner
6 testcases found
...E..
Failed testcases:
Testcase { input: "input03.txt", output: "output03.txt" }:
Name1
Not Found!
HelloWorld
-Fsad
+Fsa