Initial commit

src/assignments/assignment01_grade.rs

@@ -0,0 +1,24 @@
+#[cfg(test)]
+mod test {
+    use super::super::assignment01::*;
+
+    #[test]
+    fn add_7_3() {
+        assert_eq!(add(7, 3), 10);
+    }
+
+    #[test]
+    fn add_overflow() {
+        assert_eq!(add(usize::MAX, 1), usize::MIN);
+    }
+
+    #[test]
+    fn sub_7_3() {
+        assert_eq!(sub(7, 3), 4);
+    }
+
+    #[test]
+    fn sub_underflow() {
+        assert_eq!(sub(usize::MIN, 1), usize::MAX);
+    }
+}