summaryrefslogtreecommitdiff
path: root/vendor/thiserror/tests/test_source.rs
diff options
context:
space:
mode:
authormo khan <mo@mokhan.ca>2025-07-02 18:36:06 -0600
committermo khan <mo@mokhan.ca>2025-07-02 18:36:06 -0600
commit8cdfa445d6629ffef4cb84967ff7017654045bc2 (patch)
tree22f0b0907c024c78d26a731e2e1f5219407d8102 /vendor/thiserror/tests/test_source.rs
parent4351c74c7c5f97156bc94d3a8549b9940ac80e3f (diff)
chore: add vendor directory
Diffstat (limited to 'vendor/thiserror/tests/test_source.rs')
-rw-r--r--vendor/thiserror/tests/test_source.rs82
1 files changed, 82 insertions, 0 deletions
diff --git a/vendor/thiserror/tests/test_source.rs b/vendor/thiserror/tests/test_source.rs
new file mode 100644
index 00000000..29968bee
--- /dev/null
+++ b/vendor/thiserror/tests/test_source.rs
@@ -0,0 +1,82 @@
+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();
+}
+
+macro_rules! error_from_macro {
+ ($($variants:tt)*) => {
+ #[derive(Error)]
+ #[derive(Debug)]
+ pub enum MacroSource {
+ $($variants)*
+ }
+ }
+}
+
+// Test that we generate impls with the proper hygiene
+#[rustfmt::skip]
+error_from_macro! {
+ #[error("Something")]
+ Variant(#[from] io::Error)
+}
+
+#[test]
+fn test_not_source() {
+ #[derive(Error, Debug)]
+ #[error("{source} ==> {destination}")]
+ pub struct NotSource {
+ r#source: char,
+ destination: char,
+ }
+
+ let error = NotSource {
+ source: 'S',
+ destination: 'D',
+ };
+ assert_eq!(error.to_string(), "S ==> D");
+ assert!(error.source().is_none());
+}