divided TextFilter into MessageTextFilter and MessageCaptionFilter

src/dispatching/dispatchers/filter/filters/message_caption.rs

@@ -0,0 +1,98 @@
+use crate::dispatching::Filter;
+use crate::types::Message;
+
+pub struct MessageCaptionFilter {
+    text: String,
+}
+
+impl Filter<Message> for MessageCaptionFilter {
+    fn test(&self, value: &Message) -> bool {
+        match value.caption() {
+            Some(caption) => self.text == caption,
+            None => false
+        }
+    }
+}
+
+impl MessageCaptionFilter {
+    pub fn new(text: String) -> Self {
+        Self {
+            text
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn captions_are_equal() {
+        let filter = MessageCaptionFilter::new("caption".to_string());
+        let json = r#"{
+          "message_id": 199785,
+          "from": {
+           "id": 250918540,
+           "is_bot": false,
+           "first_name": "Андрей",
+           "last_name": "Власов",
+           "username": "aka_dude",
+           "language_code": "en"
+          },
+          "chat": {
+           "id": 250918540,
+           "first_name": "Андрей",
+           "last_name": "Власов",
+           "username": "aka_dude",
+           "type": "private"
+          },
+          "date": 1568289890,
+          "photo": [
+           {
+            "file_id": "AgADAgAD36sxG-PX0UvQSXIn9rccdw-ACA4ABAEAAwIAA20AAybcBAABFgQ",
+            "file_size": 18188,
+            "width": 320,
+            "height": 239
+           }
+          ],
+          "caption": "caption"
+         }"#;
+        let message = serde_json::from_str::<Message>(json).unwrap();
+        assert!(filter.test(&message));
+    }
+
+    #[test]
+    fn captions_are_not_equal() {
+        let filter = MessageCaptionFilter::new("text".to_string());
+        let json = r#"{
+          "message_id": 199785,
+          "from": {
+           "id": 250918540,
+           "is_bot": false,
+           "first_name": "Андрей",
+           "last_name": "Власов",
+           "username": "aka_dude",
+           "language_code": "en"
+          },
+          "chat": {
+           "id": 250918540,
+           "first_name": "Андрей",
+           "last_name": "Власов",
+           "username": "aka_dude",
+           "type": "private"
+          },
+          "date": 1568289890,
+          "photo": [
+           {
+            "file_id": "AgADAgAD36sxG-PX0UvQSXIn9rccdw-ACA4ABAEAAwIAA20AAybcBAABFgQ",
+            "file_size": 18188,
+            "width": 320,
+            "height": 239
+           }
+          ],
+          "caption": "not equal caption"
+         }"#;
+        let message = serde_json::from_str::<Message>(json).unwrap();
+        assert_eq!(filter.test(&message), false);
+    }
+}

src/dispatching/dispatchers/filter/filters/message_text.rs

@@ -9,12 +9,7 @@ impl Filter<Message> for MessageTextFilter {
     fn test(&self, value: &Message) -> bool {
         match value.text() {
             Some(text) => self.text == text,
-            None => {
+            None => false
-                match value.caption() {
-                    Some(caption) => self.text == caption,
-                    None => false
-                }
-            }
         }
     }
 }