Update .write_json to use .atomic_write

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 - :mode and :perm are now aliases for setting permissions on files in all the
   related methods (i.e., .write, .write_json, .touch, .append)
+- convert SugarUtils::File.write_json to use .atomic_write
 
 ## [0.5.0] - 2018-05-01
 ### Changed

lib/sugar_utils/file.rb

@@ -278,7 +278,7 @@ def self.atomic_write(filename, data, options = {}) # rubocop:disable MethodLeng
     #
     # @return [void]
     def self.write_json(filename, data, options = {})
-      write(filename, MultiJson.dump(data, pretty: true), options)
+      atomic_write(filename, MultiJson.dump(data, pretty: true), options)
     end
 
     # Append to an existing file, or create the file if it does not exist.

spec/sugar_utils/file_spec.rb

@@ -422,7 +422,7 @@
     let(:data) { { 'key' => 'value' } }
 
     before do
-      expect(described_class).to receive(:write).with(
+      expect(described_class).to receive(:atomic_write).with(
         :filename, MultiJson.dump(data, pretty: true), :options
       )
     end