Allow fetch subcommand to work with empty arguments

Signed-off-by: Jacob Stopak <jacob@initialcommit.io>

Author: initialcommit-io

git_sim/commands.py

@@ -110,11 +110,11 @@ def commit(
 
 def fetch(
     remote: str = typer.Argument(
-        ...,
+        default=None,
         help="The name of the remote to fetch from",
     ),
     branch: str = typer.Argument(
-        ...,
+        default=None,
         help="The name of the branch to fetch",
     ),
 ):

git_sim/fetch.py

@@ -20,16 +20,21 @@ def __init__(self, remote: str, branch: str):
         self.branch = branch
         settings.max_branches_per_commit = 2
 
-        if self.remote not in self.repo.remotes:
+        if self.remote and self.remote not in self.repo.remotes:
             print("git-sim error: no remote with name '" + self.remote + "'")
             sys.exit(1)
 
     def construct(self):
         if not settings.stdout and not settings.output_only_path and not settings.quiet:
             print(
-                f"{settings.INFO_STRING } {type(self).__name__.lower()} {self.remote} {self.branch}"
+                f"{settings.INFO_STRING } {type(self).__name__.lower()} {self.remote if self.remote else ''} {self.branch if self.branch else ''}"
             )
 
+        if not self.remote:
+            self.remote = "origin"
+        if not self.branch:
+            self.branch = self.repo.active_branch.name
+
         self.show_intro()
 
         git_root = self.repo.git.rev_parse("--show-toplevel")
@@ -42,7 +47,12 @@ def construct(self):
             for r2 in self.repo.remotes:
                 if r1.name == r2.name:
                     r2.set_url(r1.url)
-        self.repo.git.fetch(self.remote, self.branch)
+
+        try:
+            self.repo.git.fetch(self.remote, self.branch)
+        except git.GitCommandError as e:
+            print(e)
+            sys.exit(1)
 
         # local branch doesn't exist
         if self.branch not in self.repo.heads: