refactor(codeclimate): Split long check_credentials method

Gemfile

@@ -6,11 +6,12 @@ gem 'json', '~> 1.8'
 gem 'nokogiri', '~> 1.6'
 
 group :development do
+  gem 'coveralls', '~> 0.8'
+  gem 'flog', '~> 4.3'
   gem 'guard-rspec', '~> 4.6'
   gem 'jekyll', '~> 2.5' # Jekyll custom commands only available from 2.5
   gem 'jeweler', '~> 2.0'
   gem 'rspec', '~> 3.0'
   gem 'rubocop', '~> 0.31'
   gem 'simplecov', '~> 0.10'
-  gem 'coveralls', '~> 0.8'
 end

lib/push.rb

@@ -83,10 +83,9 @@ class AlgoliaSearchJekyllPush < Jekyll::Command
       nil
     end
 
-    # Check that all credentials are present, and stop with a helpfull message
-    # if not
-    def check_credentials
-      unless api_key
+    # Check that the API key is available
+    def check_api_key
+      return if api_key
       Jekyll.logger.error 'Algolia Error: No API key defined'
       Jekyll.logger.warn '  You have two ways to configure your API key:'
       Jekyll.logger.warn '    - The ALGOLIA_API_KEY environment variable'
@@ -95,7 +94,9 @@ class AlgoliaSearchJekyllPush < Jekyll::Command
       exit 1
     end
 
-      unless @config['algolia'] && @config['algolia']['application_id']
+    # Check that the application id is defined
+    def check_application_id
+      return if @config['algolia'] && @config['algolia']['application_id']
       Jekyll.logger.error 'Algolia Error: No application ID defined'
       Jekyll.logger.warn '  Please set your application id in the '\
                          '_config.yml file, like so:'
@@ -110,7 +111,9 @@ class AlgoliaSearchJekyllPush < Jekyll::Command
       exit 1
     end
 
-      unless @config['algolia']['index_name']
+    # Check that the index name is defined
+    def check_index_name
+      return if @config['algolia'] && @config['algolia']['index_name']
       Jekyll.logger.error 'Algolia Error: No index name defined'
       Jekyll.logger.warn '  Please set your index name in the _config.yml'\
                          ' file, like so:'
@@ -123,6 +126,19 @@ class AlgoliaSearchJekyllPush < Jekyll::Command
       Jekyll.logger.warn '    https://www.algolia.com/explorer'
       exit 1
     end
+
+    # Check that all credentials are present
+    # Stop with a helpful message if not
+    def check_credentials
+      check_api_key
+      check_application_id
+      check_index_name
+
+      Algolia.init(
+        application_id: @config['algolia']['application_id'],
+        api_key: api_key
+      )
+
       nil
     end
 
@@ -162,10 +178,6 @@ class AlgoliaSearchJekyllPush < Jekyll::Command
 
     def push(items)
       check_credentials
-      Algolia.init(
-        application_id: @config['algolia']['application_id'],
-        api_key: api_key
-      )
 
       # Create a temporary index
       index_name = @config['algolia']['index_name']

spec/push_spec.rb

@@ -188,6 +188,22 @@ describe(AlgoliaSearchJekyllPush) do
       expect(Jekyll.logger).to receive(:warn).at_least(:once)
       expect(-> { push.check_credentials }).to raise_error SystemExit
     end
+
+    it 'should init the Algolia client' do
+      # Given
+      push.init_options(nil, options, config)
+      stub_const('ENV', 'ALGOLIA_API_KEY' => 'APIKEY_FROM_ENV')
+      allow(Algolia).to receive(:init)
+
+      # When
+      push.check_credentials
+
+      # Then
+      expect(Algolia).to have_received(:init).with(
+        application_id: 'APPID',
+        api_key: 'APIKEY_FROM_ENV'
+      )
+    end
   end
 
   describe 'configure_index' do
@@ -286,20 +302,6 @@ describe(AlgoliaSearchJekyllPush) do
       allow(Jekyll.logger).to receive(:info)
     end
 
-    it 'should init the Algolia client' do
-      # Given
-      stub_const('ENV', 'ALGOLIA_API_KEY' => 'APIKEY_FROM_ENV')
-
-      # When
-      push.push(items)
-
-      # Then
-      expect(Algolia).to have_received(:init).with(
-        application_id: 'APPID',
-        api_key: 'APIKEY_FROM_ENV'
-      )
-    end
-
     it 'should create a temporary index' do
       # Given