refactor(cli): Remove unnecessary conversion into BTreeMap (denoland#…

…8498)

This commit removes unnecessary conversion into BTreeMap. The value
that gets converted into BTreeMap is _originally_ BTreeMap, so this
conversion is just superfluous.

Additionally, a test is added so that we can make sure the keys in the
emitted lockfile are sorted alphabetically.

cli/lockfile.rs

@@ -34,9 +34,7 @@ impl Lockfile {
  if !self.write {
  return Ok(());
  }
- // Will perform sort so output is deterministic
- let map: BTreeMap<_, _> = self.map.iter().collect();
- let j = json!(map);
+ let j = json!(&self.map);
  let s = serde_json::to_string_pretty(&j).unwrap();
  let mut f = std::fs::OpenOptions::new()
  .write(true)
@@ -192,9 +190,30 @@ mod tests {
  .read_to_string(&mut contents)
  .expect("Unable to read the file");
 
- assert!(contents.contains(
- "fedebba9bb82cce293196f54b21875b649e457f0eaf55556f1e318204947a28f"
- )); // sha-256 hash of the source 'Here is some source code'
+ let contents_json =
+ serde_json::from_str::<serde_json::Value>(&contents).unwrap();
+ let object = contents_json.as_object().unwrap();
+
+ assert_eq!(
+ object
+ .get("https://deno.land/[email protected]/textproto/mod.ts")
+ .and_then(|v| v.as_str()),
+ // sha-256 hash of the source 'Here is some source code'
+ Some("fedebba9bb82cce293196f54b21875b649e457f0eaf55556f1e318204947a28f")
+ );
+
+ // confirm that keys are sorted alphabetically
+ let mut keys = object.keys().map(|k| k.as_str());
+ assert_eq!(
+ keys.next(),
+ Some("https://deno.land/[email protected]/async/delay.ts")
+ );
+ assert_eq!(keys.next(), Some("https://deno.land/[email protected]/io/util.ts"));
+ assert_eq!(
+ keys.next(),
+ Some("https://deno.land/[email protected]/textproto/mod.ts")
+ );
+ assert!(keys.next().is_none());
 
  teardown(temp_dir);
  }