changes

crates/domain/tests/metric/alcoholic_drinks_test.rs

@@ -0,0 +1,12 @@
+use domain::metric::AlcoholicDrinks;
+
+#[test]
+fn a_count_of_drinks_no_one_survives_is_rejected() {
+    assert!(AlcoholicDrinks::new(61).is_err());
+}
+
+#[test]
+fn the_boundaries_of_a_days_drinking_are_valid() {
+    assert_eq!(AlcoholicDrinks::new(0).unwrap().value(), 0);
+    assert_eq!(AlcoholicDrinks::new(60).unwrap().value(), 60);
+}