Handle yaml file missing

Author: hoppergee

lib/matrixeval/ruby/config/yaml.rb

@@ -2,6 +2,9 @@ module Matrixeval
   module Ruby
     class Config
       class YAML
+
+        class MissingError < StandardError; end
+
         class << self
 
           def create
@@ -25,6 +28,8 @@ def [](key)
           end
 
           def yaml
+            raise MissingError unless File.exist?(path)
+
             ::YAML.load File.read(path)
           end
 

lib/matrixeval/ruby/runner.rb

@@ -38,6 +38,9 @@ def start
           See 'matrixeval --help'
           ERROR
         exit
+      rescue Config::YAML::MissingError
+        puts "Please run 'matrixeval init' first to generate matrixeval.yml"
+        exit
       ensure
         turn_on_stty_opost
       end