chore: checkpoint before Python removal

vendor/schemars/tests/remote_derive.rs

@@ -0,0 +1,45 @@
+mod util;
+
+use other_crate::Duration;
+use schemars::JsonSchema;
+use serde::Serialize;
+use util::*;
+
+mod other_crate {
+    #[derive(Default)]
+    pub struct Duration {
+        pub secs: i64,
+        pub nanos: i32,
+    }
+}
+
+#[derive(JsonSchema, Serialize)]
+#[serde(remote = "Duration")]
+struct DurationDef {
+    secs: i64,
+    nanos: i32,
+}
+
+fn custom_serialize<S>(value: &Duration, ser: S) -> Result<S::Ok, S::Error>
+where
+    S: serde::Serializer,
+{
+    ser.collect_str(&format_args!("{}.{:09}s", value.secs, value.nanos))
+}
+
+#[derive(JsonSchema, Serialize)]
+struct Process {
+    command_line: String,
+    #[serde(with = "DurationDef")]
+    wall_time: Duration,
+    #[serde(default, with = "DurationDef")]
+    user_cpu_time: Duration,
+    #[serde(default, serialize_with = "custom_serialize")]
+    #[schemars(with = "DurationDef")]
+    system_cpu_time: Duration,
+}
+
+#[test]
+fn remote_derive_json_schema() -> TestResult {
+    test_default_generated_schema::<Process>("remote_derive")
+}