Adding tests

- functional tests
- more tests
- tests tests tests

Signed-off-by: teo3300 <matteo.rogora@live.it>

.git_hooks_pre-commit-shadow

@@ -1 +0,0 @@
-.git/hooks/pre-commit

.git_hooks_pre-commit-shadow

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+# Quit when first command fails
+set -e
+
+# format code in a consistent way
+cargo fmt
+
+# yeet on any clippy warning
+cargo clippy -- -Dwarnings
+
+# check test pass
+cargo test