Add test for querying predicate on dictionary (apache#3937)

datafusion/core/tests/sql/predicates.rs

@@ -427,6 +427,34 @@ async fn csv_in_set_test() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+#[ignore]
+// https://github.com/apache/arrow-datafusion/issues/3936
+async fn in_set_string_dictionaries() -> Result<()> {
+    let input = vec![Some("foo"), Some("bar"), None, Some("fazzz")]
+        .into_iter()
+        .collect::<DictionaryArray<Int32Type>>();
+
+    let batch = RecordBatch::try_from_iter(vec![("c1", Arc::new(input) as _)]).unwrap();
+
+    let ctx = SessionContext::new();
+    ctx.register_batch("test", batch)?;
+
+    let sql = "SELECT * FROM test WHERE c1 IN ('foo', 'Bar', 'fazz')";
+    let actual = execute_to_batches(&ctx, sql).await;
+    let expected = vec![
+        "+-------+",
+        "| c1    |",
+        "+-------+",
+        "| foo   |",
+        "| fazzz |",
+        "+-------+",
+    ];
+
+    assert_batches_eq!(expected, &actual);
+    Ok(())
+}
+
 #[tokio::test]
 #[ignore]
 // https://github.com/apache/arrow-datafusion/issues/3635