src/main.rs::test_main clean up + double panic fix
src/main.rs::test_main clean up + double panic fix

Cleaned up src/main.rs::test_main and fixed a double panic condition
that would occur when the test failed.

Signed-off-by: Dan Horobeanu <de06b8d568359df57e57b444456da06d2313ae63@amazon.com>

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