Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/third_party/rust/thiserror/tests/test_source.rs b/third_party/rust/thiserror/tests/test_source.rs
new file mode 100644
index 0000000000..66d9dad592
--- /dev/null
+++ b/third_party/rust/thiserror/tests/test_source.rs
@@ -0,0 +1,50 @@
+#![deny(clippy::all, clippy::pedantic)]
+
+use std::error::Error as StdError;
+use std::io;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+#[error("implicit source")]
+pub struct ImplicitSource {
+    source: io::Error,
+}
+
+#[derive(Error, Debug)]
+#[error("explicit source")]
+pub struct ExplicitSource {
+    source: String,
+    #[source]
+    io: io::Error,
+}
+
+#[derive(Error, Debug)]
+#[error("boxed source")]
+pub struct BoxedSource {
+    #[source]
+    source: Box<dyn StdError + Send + 'static>,
+}
+
+#[test]
+fn test_implicit_source() {
+    let io = io::Error::new(io::ErrorKind::Other, "oh no!");
+    let error = ImplicitSource { source: io };
+    error.source().unwrap().downcast_ref::<io::Error>().unwrap();
+}
+
+#[test]
+fn test_explicit_source() {
+    let io = io::Error::new(io::ErrorKind::Other, "oh no!");
+    let error = ExplicitSource {
+        source: String::new(),
+        io,
+    };
+    error.source().unwrap().downcast_ref::<io::Error>().unwrap();
+}
+
+#[test]
+fn test_boxed_source() {
+    let source = Box::new(io::Error::new(io::ErrorKind::Other, "oh no!"));
+    let error = BoxedSource { source };
+    error.source().unwrap().downcast_ref::<io::Error>().unwrap();
+}