add ut

Signed-off-by: he1pa <[email protected]>

kclvm/sema/src/advanced_resolver/mod.rs

@@ -1531,7 +1531,7 @@ mod tests {
     fn test_schema_circle_dep() {
         let sess = Arc::new(ParseSession::default());
 
-        let path = "src/advanced_resolver/test_data/circle_dep.k"
+        let path = "src/advanced_resolver/test_data/circle_dep/circle_dep.k"
             .to_string()
             .replace("/", &std::path::MAIN_SEPARATOR.to_string());
         let mut program = load_program(sess.clone(), &[&path], None, None)

kclvm/sema/src/advanced_resolver/test_data/circle_dep/circle_dep.k

@@ -0,0 +1,14 @@
+schema A(A):
+    name: str
+
+schema B(C):
+    name: str
+
+schema C(B):
+    name: str
+
+
+schema D:
+    mixin [D]
+
+mixin D for D

kclvm/sema/src/core/symbol.rs

@@ -1239,11 +1239,15 @@ impl SchemaSymbol {
 
     pub fn get_parents(&self, data: &SymbolData, parents: &mut Vec<SymbolRef>) {
         if let Some(parent_schema_ref) = self.parent_schema {
-            if let Some(parent_schema) = data.get_schema_symbol(parent_schema_ref) {
-                // circular reference
-                if !parents.contains(&parent_schema_ref) {
-                    parents.push(parent_schema_ref);
-                    parent_schema.get_parents(data, parents);
+            if let Some(parent_schema) = data.get_symbol(parent_schema_ref) {
+                if let Some(schema_def) = parent_schema.get_definition() {
+                    if let Some(parent_schema) = data.get_schema_symbol(schema_def) {
+                        // circular reference
+                        if !parents.contains(&schema_def) {
+                            parents.push(schema_def);
+                            parent_schema.get_parents(data, parents);
+                        }
+                    }
                 }
             }
         }