Trigger

dbpg/src/lib.rs

@@ -6,5 +6,6 @@ pub mod pool;
 pub mod schema;
 pub mod seriesbychannel;
 pub mod seriesid;
+pub mod testerr;
 
 pub use tokio_postgres as postgres;

dbpg/src/testerr.rs

@@ -0,0 +1,31 @@
+use err::thiserror;
+use err::ThisError;
+use std::fmt;
+
+#[derive(Debug)]
+struct TestError {
+    msg: String,
+}
+
+impl fmt::Display for TestError {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        write!(fmt, "{}", self.msg)
+    }
+}
+
+impl std::error::Error for TestError {}
+
+#[derive(Debug, ThisError)]
+enum Error {
+    Postgres(#[from] tokio_postgres::Error),
+    Dummy(#[from] TestError),
+}
+
+#[test]
+fn err_msg_01() {
+    let err: Error = TestError {
+        msg: "some-error".into(),
+    }
+    .into();
+    assert_eq!(err.to_string(), "Error::Dummy(some-error)")
+}