tests: add a test that fetches the remote prelude

It's too slow even in release mode.

1 files changed, 17 insertions, 1 deletions

diff --git a/serde_dhall/tests/serde.rs b/serde_dhall/tests/serde.rs
index fe0bffb..78382d0 100644
--- a/serde_dhall/tests/serde.rs
+++ b/serde_dhall/tests/serde.rs
@@ -1,6 +1,8 @@
 mod serde {
     use serde::{Deserialize, Serialize};
-    use serde_dhall::{from_str, serialize, FromDhall, StaticType, ToDhall};
+    use serde_dhall::{
+        from_str, serialize, FromDhall, StaticType, ToDhall, Value,
+    };
 
     fn assert_de<T>(s: &str, x: T)
     where
@@ -245,6 +247,20 @@ mod serde {
         );
     }
 
+    #[test]
+    #[ignore] // Way too slow
+    fn test_prelude() {
+        assert_eq!(
+            serde_dhall::from_str(
+                "https://prelude.dhall-lang.org/package.dhall"
+            )
+            .parse::<Value>()
+            .map(|_| ())
+            .map_err(|e| e.to_string()),
+            Ok(())
+        );
+    }
+
     // TODO: test various builder configurations
     // In particular test cloning and reusing builder
 }