Add days 11, 12

12-rain_risk/tests/tests.rs

@@ -0,0 +1,14 @@
+use rain_risk::*;
+
+
+#[test]
+fn test_step1() {
+    let input = "F10\nN3\nF7\nR90\nF11";
+    assert_eq!(step1(input), 25);
+}
+
+#[test]
+fn test_step2() {
+    let input = "F10\nN3\nF7\nR90\nF11";
+    assert_eq!(step2(input), 286);
+}