fix(test): use vegetables-generated test driver

Author: Damian Rouson

tests/main.f90

@@ -1,5 +1,6 @@
 program main
-    use example_test, only : test_example
+    use example_test, only: &
+            example_example => test_example
     use Vegetables_m, only: TestItem_t, testThat, runTests
 
     implicit none
@@ -10,7 +11,7 @@ subroutine run()
         type(TestItem_t) :: tests
         type(TestItem_t) :: individual_tests(1)
 
-        individual_tests(1) = test_example()
+        individual_tests(1) = example_example()
         tests = testThat(individual_tests)
 
         call runTests(tests)