feat: add support for get branch by name

src/domain/git/branch.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Branch {
     pub name: String,
     pub fist_commit: String,

src/infrastructure/git/git_branch.rs

@@ -15,4 +15,18 @@ impl GitBranch {
 
         coco_branches
     }
+
+    pub fn get(name: &str, repo: Repository) -> Option<Branch> {
+        let filter: Vec<Branch> = GitBranch::list(repo)
+            .iter()
+            .filter(|br| br.name == name)
+            .cloned()
+            .collect();
+
+        return if filter.len() > 0 {
+            Some(filter[0].clone())
+        } else {
+            None
+        };
+    }
 }

src/infrastructure/git/mod.rs

@@ -25,4 +25,13 @@ mod test {
         let branches = GitBranch::list(repo);
         assert_eq!(5, branches.len());
     }
+
+    #[test]
+    fn should_get_master() {
+        initialize();
+
+        let repo = GitRepository::clone("https://github.com/phodal/coco.fixtures");
+        let branch = GitBranch::get("master", repo);
+        assert_eq!("master", branch.unwrap().name);
+    }
 }