Add more configuration tests

src/test/client_invalid_tls_root_certificate_file.rs

@@ -1,6 +1,7 @@
 use crate::tcp_relay_client::client_config::ClientConfig;
+use crate::test::{BAD_PATH, get_port_number, LOCALHOST_IP, PortsAllocation};
 use crate::test::pki::Pki;
-use crate::test::{get_port_number, PortsAllocation, LOCALHOST_IP};
+use crate::test::test_files_utils::create_temp_file_with_random_content;
 
 const VALID_TOKEN: &str = "AvalidTOKEN";
 
@@ -21,8 +22,8 @@ async fn invalid_file_type() {
         root_certificate: Some(pki.expired_client_key.file_path()),
         ..Default::default()
     })
-    .await
-    .unwrap_err();
+        .await
+        .unwrap_err();
 }
 
 #[tokio::test()]
@@ -33,9 +34,26 @@ async fn non_existing_file() {
         token: Some(VALID_TOKEN.to_string()),
         relay_url: format!("https://{}:{}", LOCALHOST_IP, port(0)),
         listen_address: LOCALHOST_IP.to_string(),
-        root_certificate: Some("/bad/path/to/file".to_string()),
+        root_certificate: Some(BAD_PATH.to_string()),
         ..Default::default()
     })
-    .await
-    .unwrap_err();
+        .await
+        .unwrap_err();
+}
+
+#[tokio::test()]
+async fn random_file() {
+    let _ = env_logger::builder().is_test(true).try_init();
+
+    let random_file = create_temp_file_with_random_content();
+
+    crate::tcp_relay_client::run_app(ClientConfig {
+        token: Some(VALID_TOKEN.to_string()),
+        relay_url: format!("https://{}:{}", LOCALHOST_IP, port(0)),
+        listen_address: LOCALHOST_IP.to_string(),
+        root_certificate: Some(random_file.to_string_lossy().to_string()),
+        ..Default::default()
+    })
+        .await
+        .unwrap_err();
 }