1 files changed, 80 insertions, 0 deletions
diff --git a/third_party/rust/anyhow/tests/test_macros.rs b/third_party/rust/anyhow/tests/test_macros.rs
new file mode 100644
index 0000000000..a3342ab776
--- /dev/null
+++ b/third_party/rust/anyhow/tests/test_macros.rs
@@ -0,0 +1,80 @@
+#![allow(
+    clippy::assertions_on_result_states,
+    clippy::eq_op,
+    clippy::items_after_statements,
+    clippy::needless_pass_by_value,
+    clippy::shadow_unrelated,
+    clippy::wildcard_imports
+)]
+
+mod common;
+
+use self::common::*;
+use anyhow::{anyhow, ensure};
+use std::cell::Cell;
+use std::future;
+
+#[test]
+fn test_messages() {
+    assert_eq!("oh no!", bail_literal().unwrap_err().to_string());
+    assert_eq!("oh no!", bail_fmt().unwrap_err().to_string());
+    assert_eq!("oh no!", bail_error().unwrap_err().to_string());
+}
+
+#[test]
+fn test_ensure() {
+    let f = || {
+        ensure!(1 + 1 == 2, "This is correct");
+        Ok(())
+    };
+    assert!(f().is_ok());
+
+    let v = 1;
+    let f = || {
+        ensure!(v + v == 2, "This is correct, v: {}", v);
+        Ok(())
+    };
+    assert!(f().is_ok());
+
+    let f = || {
+        ensure!(v + v == 1, "This is not correct, v: {}", v);
+        Ok(())
+    };
+    assert!(f().is_err());
+
+    let f = || {
+        ensure!(v + v == 1);
+        Ok(())
+    };
+    assert_eq!(
+        f().unwrap_err().to_string(),
+        "Condition failed: `v + v == 1` (2 vs 1)",
+    );
+}
+
+#[test]
+fn test_temporaries() {
+    fn require_send_sync(_: impl Send + Sync) {}
+
+    require_send_sync(async {
+        // If anyhow hasn't dropped any temporary format_args it creates by the
+        // time it's done evaluating, those will stick around until the
+        // semicolon, which is on the other side of the await point, making the
+        // enclosing future non-Send.
+        future::ready(anyhow!("...")).await;
+    });
+
+    fn message(cell: Cell<&str>) -> &str {
+        cell.get()
+    }
+
+    require_send_sync(async {
+        future::ready(anyhow!(message(Cell::new("...")))).await;
+    });
+}
+
+#[test]
+fn test_brace_escape() {
+    let err = anyhow!("unterminated ${{..}} expression");
+    assert_eq!("unterminated ${..} expression", err.to_string());
+}