avm: add .anchorversion file & rustfmt lib.rs file

avm/src/lib.rs

@@ -48,7 +48,7 @@ pub fn version_binary_path(version: &Version) -> PathBuf {
 pub fn use_version(opt_version: Option<Version>) -> Result<()> {
  let version = match opt_version {
  Some(version) => version,
- None => read_anchorversion_file()?
+ None => read_anchorversion_file()?,
  };
 
  let installed_versions = read_installed_versions();
@@ -142,10 +142,10 @@ pub fn uninstall_version(version: &Version) -> Result<()> {
 /// Read version from .anchorversion
 pub fn read_anchorversion_file() -> Result<Version> {
  fs::read_to_string(".anchorversion")
- .map_err(|e| anyhow!(".anchorversion file not found: {e}"))
- .map(|content| Version::parse(content.trim()))?
- .map_err(|e| anyhow!("Unable to parse version: {e}"))
-} 
+  .map_err(|e| anyhow!(".anchorversion file not found: {e}"))
+  .map(|content| Version::parse(content.trim()))?
+  .map_err(|e| anyhow!("Unable to parse version: {e}"))
+}
 
 /// Ensure the users home directory is setup with the paths required by AVM.
 pub fn ensure_paths() {
@@ -250,9 +250,9 @@ pub fn read_installed_versions() -> Vec<semver::Version> {
 mod tests {
  use crate::*;
  use semver::Version;
+ use std::env;
  use std::fs;
  use std::io::Write;
- use std::env;
 
  #[test]
  fn test_read_anchorversion() {
@@ -263,12 +263,11 @@ mod tests {
  let test_version = "0.26.0";
  file_created.write(test_version.as_bytes()).unwrap();
 
-
  let version = read_anchorversion_file();
  match version {
  Ok(v) => {
  assert_eq!(v.to_string(), test_version);
- },
+ }
  Err(_e) => {
  assert!(false);
  }