Add Alias#update_alias_id

This function takes a list of aliases and updates the current `Alias`'s
alias using an auto-incremented numeric id.

Not happy with the repetition in the tests. Need to figure out if
there's a way to abstract that.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index fdeab31..89deb49 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -48,6 +48,12 @@ impl Alias {
             format!("alias {} {} {}", self.alias, self.name, self.email)
         }
     }
+
+    fn update_alias_id(&mut self, similar_aliases: Vec<String>) {
+        if !similar_aliases.is_empty() {
+            self.alias = format!("{}-{}", self.alias, similar_aliases.len() + 1);
+        }
+    }
 }
 
 fn handle_alias(s: &str) {