test: Initial unit testing

- Test quests vector loading
- Test default quest on empty fields
- Test correct quest
- Fixed config paths handling

src/quest/mod.rs

@@ -8,7 +8,7 @@ use serde::{ Serialize, Deserialize };
 use error::QuestError;
 
 /// Difficulty of the quest
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug, PartialEq)]
 pub enum QuestDifficulty {
     /// Easy quest
     Easy,
@@ -39,33 +39,41 @@ fn default_answer() -> String {
 }
 
 /// Quest struct
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug, PartialEq)]
+#[serde(default)]
 pub struct Quest {
     /// Quest identifier
-    #[serde(default)]
     pub id: u16,
 
     /// Difficulty of this quest
-    #[serde(default)]
     pub difficulty: QuestDifficulty,
     
     /// Reward for the quest
-    #[serde(default)]
     pub reward: u32,
     
     /// Visible quest name
-    #[serde(default = "default_name")]
     pub name: String,
     
     /// Visible quest description
-    #[serde(default = "default_description")]
     pub description: String,
     
     /// Quest answer, available for admins
-    #[serde(default = "default_answer")]
     pub answer: String,
 }
 
+impl Default for Quest {
+    fn default() -> Self {
+        Quest {
+            id: u16::default(),
+            difficulty: QuestDifficulty::default(),
+            reward: u32::default(),
+            name: default_name(),
+            description: default_description(),
+            answer: default_answer()
+        }
+    }
+}
+
 impl Quest {
     /// Parse quest TOML or return error
     pub fn load(path: PathBuf) -> Result<Self, QuestError> {