Add more configuration tests

src/test/test_files_utils.rs

@@ -1,7 +1,17 @@
 use mktemp::Temp;
+use rand::Rng;
 
+/// Create a temporary file and feed it with some specified content
 pub fn create_temp_file_with_content(content: &[u8]) -> Temp {
     let temp = Temp::new_file().unwrap();
     std::fs::write(&temp, content).unwrap();
     temp
 }
+
+/// Generate a temporary file with some random content
+pub fn create_temp_file_with_random_content() -> Temp {
+    let random_bytes = rand::thread_rng().gen::<[u8; 10]>();
+    let temp = Temp::new_file().unwrap();
+    std::fs::write(&temp, random_bytes).unwrap();
+    temp
+}