Fix specs.

app/models/project_services/slack_service/slack_issue_message.rb → app/models/project_services/slack_service/issue_message.rb

-module SlackService
+class SlackService
   class IssueMessage < BaseMessage
     attr_reader :username
     attr_reader :title

app/models/project_services/slack_service/slack_merge_message.rb → app/models/project_services/slack_service/merge_message.rb

-module SlackService
+class SlackService
   class MergeMessage < BaseMessage
     attr_reader :username
     attr_reader :project_name

app/models/project_services/slack_service/slack_push_message.rb → app/models/project_services/slack_service/push_message.rb

-require 'slack-notifier'
-
-module SlackService
+class SlackService
   class PushMessage < BaseMessage
     attr_reader :after
     attr_reader :before

spec/models/project_services/slack_messages/slack_issue_message_spec.rb → spec/models/project_services/slack_service/issue_message_spec.rb

 require 'spec_helper'
 
-describe SlackMessages::SlackIssueMessage do
-  subject { SlackMessages::SlackIssueMessage.new(args) }
+describe SlackService::IssueMessage do
+  subject { SlackService::IssueMessage.new(args) }
 
   let(:args) {
     {

spec/models/project_services/slack_messages/slack_merge_message_spec.rb → spec/models/project_services/slack_service/merge_message_spec.rb

 require 'spec_helper'
 
-describe SlackMessages::SlackMergeMessage do
-  subject { SlackMessages::SlackMergeMessage.new(args) }
+describe SlackService::MergeMessage do
+  subject { SlackService::MergeMessage.new(args) }
 
   let(:args) {
     {

spec/models/project_services/slack_messages/slack_push_message_spec.rb → spec/models/project_services/slack_service/push_message_spec.rb

 require 'spec_helper'
 
-describe SlackMessages::SlackPushMessage do
-  subject { SlackMessages::SlackPushMessage.new(args) }
+describe SlackService::PushMessage do
+  subject { SlackService::PushMessage.new(args) }
 
   let(:args) {
     {
@@ -31,8 +31,8 @@ describe SlackMessages::SlackPushMessage do
       )
       expect(subject.attachments).to eq([
         {
-          text: "<url1|abcdefghi>: message1 - author1\n"\
-                "<url2|123456789>: message2 - author2",
+          text: "<url1|abcdefgh>: message1 - author1\n"\
+                "<url2|12345678>: message2 - author2",
           color: color,
         }
       ])