diff --git a/Rakefile b/Rakefile
index 5c8d53c..7bba35b 100644
--- a/Rakefile
+++ b/Rakefile
@@ -15,5 +15,4 @@ Rake::TestTask.new(:test) do |t|
   t.warning = false
 end
 
-
 task default: [:rubocop, :spec]
diff --git a/lib/active_event_store/test_helper.rb b/lib/active_event_store/test_helper.rb
index 2cd70a6..328a5de 100644
--- a/lib/active_event_store/test_helper.rb
+++ b/lib/active_event_store/test_helper.rb
@@ -2,31 +2,30 @@
 
 module ActiveEventStore
   module TestHelper
-
     class EventPublishedMatcher
       attr_reader :attributes,
-                  :matching_events
+        :matching_events
 
       def initialize(expected_event_class, store: nil, with: nil, exactly: nil, at_least: nil, at_most: nil, refute: false)
         @event_class = expected_event_class
-        @store       = store || ActiveEventStore.event_store
-        @attributes  = with
-        @refute      = refute
+        @store = store || ActiveEventStore.event_store
+        @attributes = with
+        @refute = refute
 
         count_expectations = {
-          exactly:  exactly,
-          at_most:  at_most,
-          at_least: at_least,
+          exactly: exactly,
+          at_most: at_most,
+          at_least: at_least
         }.reject { |_, v| v.nil? }
 
         if count_expectations.length > 1
           raise ArgumentError("Only one of :exactly, :at_least or :at_most can be specified")
         elsif count_expectations.length == 0
           @count_expectation_kind = :at_least
-          @expected_count         = 1
+          @expected_count = 1
         else
           @count_expectation_kind = count_expectations.keys.first
-          @expected_count         = count_expectations.values.first
+          @expected_count = count_expectations.values.first
         end
       end
 
@@ -60,7 +59,7 @@ def matches?(block)
 
           expectations << "with attributes #{attributes.inspect}" unless attributes.nil?
 
-          expectations << expectations.pop + ', but'
+          expectations << expectations.pop + ", but"
 
           expectations << if @unmatching_events.any?
             @unmatching_events.inject("published the following events instead:") do |msg, unmatching_event|
@@ -70,7 +69,7 @@ def matches?(block)
             "hasn't published anything"
           end
 
-          return expectations.join(' ')
+          return expectations.join(" ")
         end
 
         nil
@@ -133,7 +132,6 @@ def count_mismatch_message(actual_count)
           raise ArgumentError, "Unrecognized expectation kind: #{@count_expectation_kind}"
         end
       end
-
     end
 
     # Asserts that the given event was published `exactly`, `at_least` or `at_most` number of times
@@ -141,29 +139,29 @@ def count_mismatch_message(actual_count)
     def assert_event_published(expected_event, store: nil, with: nil, exactly: nil, at_least: nil, at_most: nil, &block)
       matcher = EventPublishedMatcher.new(
         expected_event,
-        store:    store,
-        with:     with,
-        exactly:  exactly,
+        store: store,
+        with: with,
+        exactly: exactly,
         at_least: at_least,
-        at_most:  at_most,
+        at_most: at_most
       )
 
       if (msg = matcher.matches?(block))
         fail(msg)
       end
 
-      return  matcher.matching_events
+      matcher.matching_events
     end
 
     def refute_event_published(expected_event, store: nil, with: nil, exactly: nil, at_least: nil, at_most: nil, &block)
       matcher = EventPublishedMatcher.new(
         expected_event,
-        store:    store,
-        with:     with,
-        exactly:  exactly,
+        store: store,
+        with: with,
+        exactly: exactly,
         at_least: at_least,
-        at_most:  at_most,
-        refute:   true
+        at_most: at_most,
+        refute: true
       )
 
       if (msg = matcher.matches?(block))
diff --git a/test/active_event_store/test_helper_test.rb b/test/active_event_store/test_helper_test.rb
index 6b3c806..4e3ea34 100644
--- a/test/active_event_store/test_helper_test.rb
+++ b/test/active_event_store/test_helper_test.rb
@@ -1,18 +1,20 @@
-require 'test_helper'
-require 'active_event_store/test_helper'
-require_relative '../../spec/support/test_events'
+# frozen_string_literal: true
+
+require "test_helper"
+require "active_event_store/test_helper"
+require_relative "../../spec/support/test_events"
 
 class TestHelperTest < Minitest::Test
   include ActiveEventStore::TestHelper
   attr_reader :event_class,
-              :event,
-              :event2
+    :event,
+    :event2
 
   def setup
     super
     @event_class = ActiveEventStore::TestEvent
-    @event       = event_class.new(user_id: 25, action_type: "birth")
-    @event2      = event_class.new(user_id: 1, action_type: "death")
+    @event = event_class.new(user_id: 25, action_type: "birth")
+    @event2 = event_class.new(user_id: 1, action_type: "death")
   end
 
   def test_assert_event_published
@@ -22,17 +24,16 @@ def test_assert_event_published
 
     assert events.length == 1
     assert_includes events, event
-
   end
 
   def test_assert_event_published_with_one_attribute
-    assert_event_published(ActiveEventStore::TestEvent, with: { user_id: 25 }) do
+    assert_event_published(ActiveEventStore::TestEvent, with: {user_id: 25}) do
       ActiveEventStore.publish(event)
     end
   end
 
   def test_assert_event_published_with_multiple_attributes
-    assert_event_published(ActiveEventStore::TestEvent, with: { user_id: 25, action_type: "birth" }) do
+    assert_event_published(ActiveEventStore::TestEvent, with: {user_id: 25, action_type: "birth"}) do
       ActiveEventStore.publish(event)
     end
   end
@@ -47,13 +48,12 @@ def test_assert_event_published_with_count
   # == Failure cases
 
   def test_assert_event_published_with_no_events
-
     e = assert_raises do
       assert_event_published(ActiveEventStore::TestEvent, exactly: 1) do
       end
     end
 
-    assert_match /exactly 1 test_event to have been published, but hasn't published anything/, e.message
+    assert_match(/exactly 1 test_event to have been published, but hasn't published anything/, e.message)
   end
 
   def test_assert_event_published_with_class_mismatch
@@ -63,16 +63,16 @@ def test_assert_event_published_with_class_mismatch
       end
     end
 
-    assert_match /at least 1 active_event_store.another_test_event to have been published.*published the following events instead/, e.message
+    assert_match(/at least 1 active_event_store.another_test_event to have been published.*published the following events instead/, e.message)
   end
 
   def test_assert_event_published_with_attribute_mismatch
     e = assert_raises do
-      assert_event_published(ActiveEventStore::TestEvent, with: { user_id: 25, action_type: "death" }) do
+      assert_event_published(ActiveEventStore::TestEvent, with: {user_id: 25, action_type: "death"}) do
         ActiveEventStore.publish(event)
       end
     end
 
-    assert_match /at least 1 test_event.*with attributes.*:user_id=>25.*:action_type=>"death".*but published(.|[\n])*:user_id=>25.*:action_type=>"birth"/s, e.message
+    assert_match(/at least 1 test_event.*with attributes.*:user_id=>25.*:action_type=>"death".*but published(.|[\n])*:user_id=>25.*:action_type=>"birth"/s, e.message)
   end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index f57b767..bbb703e 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -9,7 +9,7 @@
 
 ENV["RAILS_ENV"] = "test"
 
-require 'bundler'
+require "bundler"
 Bundler.require :default, :test
 
 begin