100 exercises to learn Rust

exercises/06_ticket_management/10_slices/src/lib.rs

@@ -0,0 +1,31 @@
+// TODO: Define a function named that takes a reference to a slice of `u32` and returns the sum of all
+//  elements in the slice.
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn empty() {
+        let v = vec![];
+        assert_eq!(sum(&v), 0);
+    }
+
+    #[test]
+    fn one_element() {
+        let v = vec![1];
+        assert_eq!(sum(&v), 1);
+    }
+
+    #[test]
+    fn multiple_elements() {
+        let v = vec![1, 2, 3, 4, 5];
+        assert_eq!(sum(&v), 15);
+    }
+
+    #[test]
+    fn array_slice() {
+        let v = [1, 2, 3, 4, 5];
+        assert_eq!(sum(&v), 15);
+    }
+}