From 19fa8458c56a10f63370e354acbf2c202f670690 Mon Sep 17 00:00:00 2001
From: "Jorge C. Leitao" <jorgecarleitao@gmail.com>
Date: Wed, 1 Sep 2021 21:45:58 +0000
Subject: [PATCH] Added support for exporting metadata via FFI.

---
 tests/it/ffi.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/it/ffi.rs b/tests/it/ffi.rs
index d76cf5b32b3..856034c00f9 100644
--- a/tests/it/ffi.rs
+++ b/tests/it/ffi.rs
@@ -1,6 +1,7 @@
 use arrow2::array::*;
 use arrow2::datatypes::{DataType, Field, TimeUnit};
 use arrow2::{error::Result, ffi};
+use std::collections::BTreeMap;
 use std::sync::Arc;
 
 fn test_round_trip(expected: impl Array + Clone + 'static) -> Result<()> {
@@ -163,5 +164,11 @@ fn schema() -> Result<()> {
         DataType::Dictionary(Box::new(DataType::UInt32), Box::new(DataType::Utf8)),
         true,
     );
+    test_round_trip_schema(field)?;
+
+    let field = Field::new("a", DataType::Int32, true);
+    let mut metadata = BTreeMap::new();
+    metadata.insert("some".to_string(), "stuff".to_string());
+    let field = field.with_metadata(metadata);
     test_round_trip_schema(field)
 }