From 4dfc11d74ab02ac5765ae5d08fb750c91f4744b4 Mon Sep 17 00:00:00 2001
From: Hunter Kvalevog <hunter@kvog.sh>
Date: Fri, 2 Oct 2026 21:53:51 -0500
Subject: rustlings: move to rust/

---
 .../exercises/13_error_handling/errors1.rs         | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 rust/rustlings/exercises/13_error_handling/errors1.rs

(limited to 'rust/rustlings/exercises/13_error_handling/errors1.rs')

diff --git a/rust/rustlings/exercises/13_error_handling/errors1.rs b/rust/rustlings/exercises/13_error_handling/errors1.rs
new file mode 100644
index 0000000..b9b9bd5
--- /dev/null
+++ b/rust/rustlings/exercises/13_error_handling/errors1.rs
@@ -0,0 +1,40 @@
+// TODO: This function refuses to generate text to be printed on a nametag if
+// you pass it an empty string. It'd be nicer if it explained what the problem
+// was instead of just returning `None`. Thankfully, Rust has a similar
+// construct to `Option` that can be used to express error conditions. Change
+// the function signature and body to return `Result<String, String>` instead
+// of `Option<String>`.
+fn generate_nametag_text(name: String) -> Result<String, String> {
+    if name.is_empty() {
+        Err(String::from("Empty names aren't allowed"))
+    } else {
+        Ok(format!("Hi! My name is {name}"))
+    }
+}
+
+fn main() {
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn generates_nametag_text_for_a_nonempty_name() {
+        assert_eq!(
+            generate_nametag_text("Beyoncé".to_string()).as_deref(),
+            Ok("Hi! My name is Beyoncé"),
+        );
+    }
+
+    #[test]
+    fn explains_why_generating_nametag_text_fails() {
+        assert_eq!(
+            generate_nametag_text(String::new())
+                .as_ref()
+                .map_err(|e| e.as_str()),
+            Err("Empty names aren't allowed"),
+        );
+    }
+}
-- 
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