feat(core): handle JoinType serde using SCREAMING_SNAKE_CASE and snake_case style (#760)

* use `SCREAMING_SNAKE_CASE` to handle the serde of join type

* modifiy for real case tests

* cargo fmt and clippy

Author: goldmedal

wren-modeling-rs/core/src/mdl/builder.rs

@@ -430,6 +430,38 @@ mod test {
         assert_eq!(actual, expected)
     }
 
+    #[test]
+    fn test_join_type_case_insensitive() {
+        let case = ["one_to_one", "ONE_TO_ONE"];
+        let expected = JoinType::OneToOne;
+        for case in case.iter() {
+            assert_serde(&format!("\"{}\"", case), expected);
+        }
+
+        let case = ["one_to_many", "ONE_TO_MANY"];
+        let expected = JoinType::OneToMany;
+        for case in case.iter() {
+            assert_serde(&format!("\"{}\"", case), expected);
+        }
+
+        let case = ["many_to_one", "MANY_TO_ONE"];
+        let expected = JoinType::ManyToOne;
+        for case in case.iter() {
+            assert_serde(&format!("\"{}\"", case), expected);
+        }
+
+        let case = ["many_to_many", "MANY_TO_MANY"];
+        let expected = JoinType::ManyToMany;
+        for case in case.iter() {
+            assert_serde(&format!("\"{}\"", case), expected);
+        }
+    }
+
+    fn assert_serde(json_str: &str, expected: JoinType) {
+        let actual: JoinType = serde_json::from_str(json_str).unwrap();
+        assert_eq!(actual, expected);
+    }
+
     #[test]
     fn test_metric_roundtrip() {
         let model = MetricBuilder::new("test")

wren-modeling-rs/core/src/mdl/manifest.rs

@@ -135,13 +135,16 @@ pub struct Relationship {
     pub properties: BTreeMap<String, String>,
 }
 
-// handle case insensitive
 #[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Hash, Clone, Copy)]
-#[serde(rename_all = "snake_case")]
+#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
 pub enum JoinType {
+    #[serde(alias = "one_to_one")]
     OneToOne,
+    #[serde(alias = "one_to_many")]
     OneToMany,
+    #[serde(alias = "many_to_one")]
     ManyToOne,
+    #[serde(alias = "many_to_many")]
     ManyToMany,
 }
 

wren-modeling-rs/core/tests/data/mdl.json

@@ -131,13 +131,13 @@
     {
       "name": "CustomerOrders",
       "models": ["customer", "orders"],
-      "joinType": "one_to_many",
+      "joinType": "ONE_TO_MANY",
       "condition": "customer.custkey = orders.custkey"
     },
     {
       "name" : "CustomerProfile",
       "models": ["customer", "profile"],
-      "joinType": "one_to_one",
+      "joinType": "ONE_TO_ONE",
       "condition": "customer.custkey = profile.custkey"
     }
   ],