Rollup merge of #22623 - petrochenkov:optest, r=alexcrichton

 Tests often use `vec![1, 2, 3]` instead of shorter and faster `[1, 2, 3]`.
This patch removes a lot of unnecessary `vec!`s. Hopefully, the tests will compile and run a bit faster.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libstd/sys/common/wtf8.rs b/src/libstd/sys/common/wtf8.rs
index 9119a3c60d8..fb9d6fef1fa 100644
--- a/src/libstd/sys/common/wtf8.rs
+++ b/src/libstd/sys/common/wtf8.rs
@@ -1202,11 +1202,11 @@ mod tests {
             string.code_points().map(|c| c.to_char()).collect::<Vec<_>>()
         }
         let mut string = Wtf8Buf::from_str("é ");
-        assert_eq!(cp(&string), vec![Some('é'), Some(' ')]);
+        assert_eq!(cp(&string), [Some('é'), Some(' ')]);
         string.push(c(0xD83D));
-        assert_eq!(cp(&string), vec![Some('é'), Some(' '), None]);
+        assert_eq!(cp(&string), [Some('é'), Some(' '), None]);
         string.push(c(0xDCA9));
-        assert_eq!(cp(&string), vec![Some('é'), Some(' '), Some('💩')]);
+        assert_eq!(cp(&string), [Some('é'), Some(' '), Some('💩')]);
     }
 
     #[test]