fix: can't compare Option trough assert_eq

Author: stifskere

library/std/src/macros.rs

@@ -412,8 +412,16 @@ macro_rules! repetition_utils {
 ///     "key1" => "value1"
 /// };
 ///
-/// assert_eq!(map.get("key"), "value");
-/// assert_eq!(map.get("key1"), "value1");
+/// assert_eq!(
+///     map.get("key")
+///         .expect("Key to be associated to a value"),
+///     "value"
+/// );
+/// assert_eq!(
+///     map.get("key1")
+///         .expect("Key to be associated to a value"),
+///     "value1"
+/// );
 /// ```
 ///
 /// This macro also supports trailing comma.
@@ -425,7 +433,11 @@ macro_rules! repetition_utils {
 ///     "key" => "value", // notice the ,
 /// };
 ///
-/// assert_eq!(map.get("key"), "value");
+/// assert_eq!(
+///     map.get("key")
+///         .expect("Key to be associated to a value"),
+///         "value"
+/// );
 /// ```
 ///
 /// The key and value are moved into the HashMap.