From 2b2418c6d191ca09fb5414c11455e620f19c2786 Mon Sep 17 00:00:00 2001
From: Jonas Platte <jonas@lumeo.com>
Date: Fri, 22 Jan 2021 14:59:04 +0100
Subject: [PATCH] Add a test for nesting `.map`

---
 tests/postgres/postgres.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tests/postgres/postgres.rs b/tests/postgres/postgres.rs
index 4e5b107c..dee9062d 100644
--- a/tests/postgres/postgres.rs
+++ b/tests/postgres/postgres.rs
@@ -152,6 +152,21 @@ CREATE TEMPORARY TABLE users (id INTEGER PRIMARY KEY);
     Ok(())
 }
 
+#[sqlx_macros::test]
+async fn it_can_nest_map() -> anyhow::Result<()> {
+    let mut conn = new::<Postgres>().await?;
+
+    let res = sqlx::query("SELECT 5")
+        .map(|row: PgRow| row.get(0))
+        .map(|int: i32| int.to_string())
+        .fetch_one(&mut conn)
+        .await?;
+
+    assert_eq!(res, "5");
+
+    Ok(())
+}
+
 #[cfg(feature = "json")]
 #[sqlx_macros::test]
 async fn it_describes_and_inserts_json_and_jsonb() -> anyhow::Result<()> {