Regression: Build test.sh script is not properly running.

Regression: Build test.sh script is not properly running.

Two mistakes are introduced by the commit 8f5854676725879488eaa1b378dc5d02e8169ae5.
1) The error handling return status checks are against empty string and not "0".
2) Accidental copy and paste mistake where print variable is being used as if it were a function.

Remove the failure=0 assignment.
The default of failure="" is what is needed.

The variable print_line_first is supposed to be test_print_first.