Improve tests

Signed-off-by: Palash Nigam <[email protected]>

Author: palash25

src/metrics/summary.rs

@@ -130,16 +130,13 @@ mod tests {
     #[test]
     fn basic() {
         let summary = Summary::new(5, 10, vec![0.5, 0.9, 0.99], 0.01);
+        summary.observe(1.0);
         summary.observe(5.0);
-        summary.observe(15.0);
-        summary.observe(25.0);
+        summary.observe(10.0);
 
         let (s, c, q) = summary.get();
-        assert_eq!(45.0, s);
+        assert_eq!(16.0, s);
         assert_eq!(3, c);
-
-        for elem in q.iter() {
-            println!("Vec<{}, {}>", elem.0, elem.1);
-        }
+        assert_eq!(vec![(0.5, 5.0), (0.9, 10.0), (0.99, 10.0)], q);
     }
 }