Simplify syntax for byte-slice assertions

Author: kulp

bindgen-integration/build.rs

@@ -76,10 +76,7 @@ impl ParseCallbacks for MacroCallback {
  // change in the future, but it is safe by the definition of a
  // token in C, whereas leaving the spaces out could change
  // tokenization.
- assert_eq!(
- value,
- &["-".as_bytes(), "TESTMACRO_INTEGER".as_bytes()]
- );
+ assert_eq!(value, &[b"-" as &[u8], b"TESTMACRO_INTEGER"]);
  *self.seen_funcs.lock().unwrap() += 1;
  }
  "TESTMACRO_FUNCTIONAL_EMPTY(TESTMACRO_INTEGER)" => {
@@ -89,11 +86,7 @@ impl ParseCallbacks for MacroCallback {
  "TESTMACRO_FUNCTIONAL_TOKENIZED(a,b,c,d,e)" => {
  assert_eq!(
  value,
- ["a", "/", "b", "c", "d", "##", "e"]
- .iter()
- .map(|s| s.as_bytes())
- .collect::<Vec<_>>()
- .as_slice()
+ &[b"a" as &[u8], b"/", b"b", b"c", b"d", b"##", b"e"]
  );
  *self.seen_funcs.lock().unwrap() += 1;
  }