Added generate password test

Author: Mohaned2023

src/password_manager/generate.rs

@@ -77,4 +77,22 @@ pub fn main(command: &ArgMatches) {
         }
     }
     displaylib::passwords::display_one(_password);
+}
+
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn generate_password() {
+        let mut password = super::generate(
+            512, 
+            super::utilities::PasswordSample::Ascii
+        );
+        assert_eq!(password.len(), 512, "ASCII password length is NOT 512!!");
+        password = super::generate(
+            192, 
+            super::utilities::PasswordSample::Hex
+        );
+        assert_eq!(password.len(), 192, "HEX password length is NOT 192!!");
+    }
 }