♻️ Move convids cmd code to internal App

convids/logic.go

@@ -162,13 +162,18 @@ func DryRun(out io.Writer) ShowWalker {
 }
 
 func GetShow(ctx context.Context) ShowWalker {
+	return GetShowWithIO(ctx, os.Stdin, os.Stdout, os.Stderr)
+}
+
+func GetShowWithIO(ctx context.Context, stdin io.Reader, stdout io.Writer, stderr io.Writer) ShowWalker {
 	return func(s *Show, path string) error {
 		cmd := exec.CommandContext(ctx, "get-shows", s.Folder, path)
-		cmd.Stdin = os.Stdin
-		cmd.Stdout = os.Stdout
-		cmd.Stderr = os.Stderr
+		cmd.Stdin = stdin
+		cmd.Stdout = stdout
+		cmd.Stderr = stderr
 		return cmd.Run()
 	}
+
 }
 
 func PrintGroupName(out io.Writer) GroupPrinter {