make load_gcloud_project_id module function (#170)

lib/googleauth/credentials_loader.rb

@@ -147,6 +147,7 @@ module Google
       rescue
         warn 'Unable to determine project id.'
       end
+      module_function :load_gcloud_project_id
 
       private
 

lib/googleauth/service_account.rb

@@ -65,7 +65,7 @@ module Google
           client_email = ENV[CredentialsLoader::CLIENT_EMAIL_VAR]
           project_id = ENV[CredentialsLoader::PROJECT_ID_VAR]
         end
-        project_id ||= self.class.load_gcloud_project_id
+        project_id ||= CredentialsLoader.load_gcloud_project_id
 
         new(token_credential_uri: TOKEN_CRED_URI,
             audience: TOKEN_CRED_URI,
@@ -157,7 +157,7 @@ module Google
           @issuer = ENV[CredentialsLoader::CLIENT_EMAIL_VAR]
           @project_id = ENV[CredentialsLoader::PROJECT_ID_VAR]
         end
-        @project_id ||= self.class.load_gcloud_project_id
+        @project_id ||= CredentialsLoader.load_gcloud_project_id
         @signing_key = OpenSSL::PKey::RSA.new(@private_key)
       end
 

lib/googleauth/user_refresh.rb

@@ -90,7 +90,7 @@ module Google
         options[:token_credential_uri] ||= TOKEN_CRED_URI
         options[:authorization_uri] ||= AUTHORIZATION_URI
         @project_id = options[:project_id]
-        @project_id ||= self.class.load_gcloud_project_id
+        @project_id ||= CredentialsLoader.load_gcloud_project_id
         super(options)
       end
 

lib/googleauth/version.rb

@@ -31,6 +31,6 @@ module Google
   # Module Auth provides classes that provide Google-specific authorization
   # used to access Google APIs.
   module Auth
-    VERSION = '0.7.0'.freeze
+    VERSION = '0.7.1'.freeze
   end
 end