Handle long version when git ref is not available.

Author: fnando

cmd/soroban-cli/src/commands/version.rs

@@ -39,8 +39,14 @@ pub fn git() -> &'static str {
 
 pub fn long() -> String {
     let xdr = stellar_xdr::VERSION;
+    let git_rev = if git().is_empty() {
+        String::new()
+    } else {
+        format!(" ({})", git())
+    };
+
     [
-        format!("{} ({})", pkg(), git()),
+        format!("{}{git_rev}", pkg()),
         format!(
             "stellar-xdr {} ({})
 xdr curr ({})",
@@ -55,3 +61,29 @@ pub fn one_line() -> String {
     let git = git();
     format!("{pkg}#{git}")
 }
+
+#[test]
+fn test_long_without_git_rev() {
+    let expected = format!(
+        "{}\nstellar-xdr {} ({})\nxdr curr ({})",
+        pkg(),
+        stellar_xdr::VERSION.pkg,
+        stellar_xdr::VERSION.rev,
+        stellar_xdr::VERSION.xdr_curr,
+    );
+    assert_eq!(long(), expected);
+}
+
+#[test]
+fn test_long_with_git_rev() {
+    std::env::set_var("GIT_REVISION", "REF");
+    let expected = format!(
+        "{} (REF)\nstellar-xdr {} ({})\nxdr curr ({})",
+        pkg(),
+        stellar_xdr::VERSION.pkg,
+        stellar_xdr::VERSION.rev,
+        stellar_xdr::VERSION.xdr_curr,
+    );
+    assert_eq!(long(), expected);
+    std::env::remove_var("GIT_REVISION");
+}