Update RSpec setup

Regenerate the RSpec spec helper and modernize the config.

lib/protobuf/active_record/columns.rb

@@ -1,4 +1,3 @@
-require "set"
 require "active_support/concern"
 
 module Protobuf

lib/protobuf/active_record/serialization.rb

@@ -1,4 +1,3 @@
-require "set"
 require "active_support/concern"
 
 module Protobuf

spec/protobuf/active_record/columns_spec.rb

@@ -1,6 +1,6 @@
 require "spec_helper"
 
-describe Protobuf::ActiveRecord::Columns do
+RSpec.describe Protobuf::ActiveRecord::Columns do
   describe "._protobuf_map_columns" do
     context "when the class has a table" do
       let(:expected_column_names) {

spec/protobuf/active_record/nested_attributes_spec.rb

@@ -1,6 +1,6 @@
 require "spec_helper"
 
-describe Protobuf::ActiveRecord::NestedAttributes do
+RSpec.describe Protobuf::ActiveRecord::NestedAttributes do
   let(:user_message) {
     UserMessage.new(name: "foo bar", email: "[email protected]", photos: [{url: "https://test.co/test.png"}])
   }

spec/protobuf/active_record/persistence_spec.rb

@@ -1,6 +1,6 @@
 require "spec_helper"
 
-describe Protobuf::ActiveRecord::Persistence do
+RSpec.describe Protobuf::ActiveRecord::Persistence do
   let(:user) { User.new(user_attributes) }
   let(:user_attributes) { {first_name: "foo", last_name: "bar", email: "[email protected]"} }
   let(:proto_hash) { {name: "foo bar", email: "[email protected]"} }

spec/protobuf/active_record/scope_spec.rb

@@ -8,7 +8,7 @@ class TheMessage < ::Protobuf::Message
   optional TheEnum, :the_enum_value, 1
 end
 
-describe Protobuf::ActiveRecord::Scope do
+RSpec.describe Protobuf::ActiveRecord::Scope do
   before do
     @field_parsers = User.instance_variable_get(:@_searchable_field_parsers)
     @fields = User.instance_variable_get(:@_searchable_fields)

spec/protobuf/active_record/serialization_spec.rb

@@ -5,7 +5,7 @@ class UnconfiguredUser
   include Protobuf::ActiveRecord::Model
 end
 
-describe Protobuf::ActiveRecord::Serialization do
+RSpec.describe Protobuf::ActiveRecord::Serialization do
   let(:protobuf_message) { UserMessage }
 
   describe ".field_from_record" do

spec/protobuf/active_record/transformation_spec.rb

@@ -1,6 +1,6 @@
 require "spec_helper"
 
-describe Protobuf::ActiveRecord::Transformation do
+RSpec.describe Protobuf::ActiveRecord::Transformation do
   let(:user) { User.new(user_attributes) }
   let(:user_attributes) { {first_name: "foo", last_name: "bar", email: "[email protected]"} }
   let(:proto_hash) { {name: "foo bar", email: "[email protected]"} }

spec/protobuf/active_record/transformer_spec.rb

@@ -1,6 +1,6 @@
 require "spec_helper"
 
-describe ::Protobuf::ActiveRecord::Transformer do
+RSpec.describe ::Protobuf::ActiveRecord::Transformer do
   let(:callable) { lambda { |proto| proto.name } }
   let(:proto) { ::UserMessage.new(name: "test", nullify: ["name"]) }
   let(:options) { {} }

spec/spec_helper.rb

@@ -1,12 +1,12 @@
-require "rubygems"
-require "bundler"
+# frozen_string_literal: true
 
 require "simplecov"
 SimpleCov.start do
   add_filter "/spec/"
 end
 
-Bundler.require(:default, :development, :test)
+require "protobuf-activerecord"
+require "timecop"
 
 require "support/db"
 require "support/models"
@@ -16,12 +16,21 @@
 Protobuf::Logging.logger.level = ::Logger::FATAL
 
 RSpec.configure do |config|
-  # Turn deprecation warnings into errors with full backtrace.
-  config.raise_errors_for_deprecations!
+  # Enable flags like --only-failures and --next-failure
+  config.example_status_persistence_file_path = ".rspec_status"
+
+  # Disable RSpec exposing methods globally on `Module` and `main`
+  config.disable_monkey_patching!
+
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
 
-  # Verifies the existance of any stubbed methods, replaces better_receive and better_stub
-  # https://www.relishapp.com/rspec/rspec-mocks/v/3-1/docs/verifying-doubles/partial-doubles
-  config.mock_with :rspec do |mocks|
-    mocks.verify_partial_doubles = true
+  # Verify the existence of any stubbed methods
+  config.mock_with :rspec do |c|
+    c.verify_partial_doubles = true
   end
+
+  # Turn deprecation warnings into errors with full backtrace.
+  config.raise_errors_for_deprecations!
 end