Fix broken tests

src/deflate/mod.rs

@@ -42,6 +42,7 @@ enum BlockType {
 mod tests {
     use super::*;
     use crate::lz77;
+    use alloc::vec::Vec;
     use core2::io::{Read, Write};
 
     #[test]

src/non_blocking/gzip.rs

@@ -157,6 +157,7 @@ mod tests {
     use super::*;
     use crate::gzip::Encoder;
     use crate::util::{nb_read_to_end, WouldBlockReader};
+    use alloc::vec::Vec;
     use core2::io::Write;
 
     fn decode_all(buf: &[u8]) -> io::Result<Vec<u8>> {

src/util.rs

@@ -1,5 +1,6 @@
 #[cfg(test)]
 pub(crate) mod testonly {
+    use alloc::vec;
     use alloc::vec::Vec;
     use core2::io::{self, Read};