Jefffrey commented on code in PR #17872:
URL: https://github.com/apache/datafusion/pull/17872#discussion_r2397187580
##########
datafusion/expr/src/async_udf.rs:
##########
@@ -132,3 +128,128 @@ impl Display for AsyncScalarUDF {
write!(f, "AsyncScalarUDF: {}", self.inner.name())
}
}
+
+#[cfg(test)]
+mod tests {
+ use std::{collections::HashSet, sync::Arc};
+
+ use arrow::datatypes::DataType;
+ use async_trait::async_trait;
+ use datafusion_common::error::Result;
+ use datafusion_expr_common::{columnar_value::ColumnarValue,
signature::Signature};
+
+ use crate::{
+ async_udf::{AsyncScalarUDF, AsyncScalarUDFImpl},
+ ScalarFunctionArgs, ScalarUDFImpl,
+ };
+
+ #[derive(Debug, PartialEq, Eq, Hash, Clone)]
+ struct TestAsyncUDFImpl1 {
+ a: i32,
+ }
+
+ impl ScalarUDFImpl for TestAsyncUDFImpl1 {
+ fn as_any(&self) -> &dyn std::any::Any {
+ self
+ }
+
+ fn name(&self) -> &str {
+ todo!()
+ }
+
+ fn signature(&self) -> &Signature {
+ todo!()
+ }
+
+ fn return_type(&self, _arg_types: &[DataType]) -> Result<DataType> {
+ todo!()
+ }
+
+ fn invoke_with_args(&self, _args: ScalarFunctionArgs) ->
Result<ColumnarValue> {
+ todo!()
+ }
+ }
+
+ #[async_trait]
+ impl AsyncScalarUDFImpl for TestAsyncUDFImpl1 {
+ async fn invoke_async_with_args(
+ &self,
+ _args: ScalarFunctionArgs,
+ ) -> Result<ColumnarValue> {
+ todo!()
+ }
+ }
+
+ #[derive(Debug, PartialEq, Eq, Hash, Clone)]
+ struct TestAsyncUDFImpl2 {
+ a: i32,
+ }
+
+ impl ScalarUDFImpl for TestAsyncUDFImpl2 {
+ fn as_any(&self) -> &dyn std::any::Any {
+ self
+ }
+
+ fn name(&self) -> &str {
+ todo!()
+ }
+
+ fn signature(&self) -> &Signature {
+ todo!()
+ }
+
+ fn return_type(&self, _arg_types: &[DataType]) -> Result<DataType> {
+ todo!()
+ }
+
+ fn invoke_with_args(&self, _args: ScalarFunctionArgs) ->
Result<ColumnarValue> {
+ todo!()
+ }
+ }
+
+ #[async_trait]
+ impl AsyncScalarUDFImpl for TestAsyncUDFImpl2 {
+ async fn invoke_async_with_args(
+ &self,
+ _args: ScalarFunctionArgs,
+ ) -> Result<ColumnarValue> {
+ todo!()
+ }
+ }
+
+ #[test]
+ fn udf_equality_and_hash() {
+ // Inner is same cloned arc -> equal
+ let inner = Arc::new(TestAsyncUDFImpl1 { a: 1 });
+ let a = AsyncScalarUDF::new(Arc::clone(&inner) as Arc<dyn
AsyncScalarUDFImpl>);
+ let b = AsyncScalarUDF::new(inner);
+ assert_eq!(a, b);
+ let mut set = HashSet::new();
+ set.insert(a);
+ assert!(set.contains(&b));
+
+ // Inner is distinct arc -> still equal
+ let a = AsyncScalarUDF::new(Arc::new(TestAsyncUDFImpl1 { a: 1 }));
+ let b = AsyncScalarUDF::new(Arc::new(TestAsyncUDFImpl1 { a: 1 }));
+ assert_eq!(a, b);
+ let mut set = HashSet::new();
+ set.insert(a);
+ assert!(set.contains(&b));
Review Comment:
This test would have failed before; it succeeding is new behaviour
introduced by this change.
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