tests

exercises/test2.rs

@@ -17,6 +17,11 @@ mod tests {
 
     #[test]
     fn returns_twice_of_positive_numbers() {
-        assert_eq!(4, 4);
+        assert_eq!(4, times_two(2));
+    }
+
+    #[test]
+    fn returns_twice_of_negative_numbers() {
+        assert_eq!(-4, times_two(-2));
     }
 }

exercises/tests/tests1.rs

@@ -10,7 +10,7 @@
 mod tests {
     #[test]
     fn you_can_assert() {
-        assert!();
+        assert!(true);
     }
 }
 

exercises/tests/tests2.rs

@@ -6,7 +6,7 @@
 mod tests {
     #[test]
     fn you_can_assert_eq() {
-        assert_eq!();
+        assert_eq!(5,5);
     }
 }
 

exercises/tests/tests3.rs

@@ -13,7 +13,12 @@ mod tests {
 
     #[test]
     fn is_true_when_even() {
-        assert!();
+        assert!(is_even(6));
+    }
+
+    #[test]
+    fn is_false_when_odd() {
+        assert!(!is_even(5));
     }
 }