Fix CiStatus implementation and tests

app/models/commit_status.rb

@@ -51,8 +51,6 @@ class CommitStatus < ActiveRecord::Base
   scope :ordered, -> { order(:ref, :stage_idx, :name) }
   scope :ignored, -> { where(allow_failure: true, status: [:failed, :canceled]) }
 
-  AVAILABLE_STATUSES = ['pending', 'running', 'success', 'failed', 'canceled']
-
   state_machine :status, initial: :pending do
     event :run do
       transition pending: :running

app/models/concerns/ci_status.rb

 module CiStatus
   extend ActiveSupport::Concern
 
-  module ClassMethods
+  AVAILABLE_STATUSES = %w(pending running success failed canceled skipped)
+
+  class_methods do
     def status_sql
-      builds = all.select('count(id)').to_sql
-      success = all.success.select('count(id)').to_sql
-      ignored = all.failed.where(allow_failure: true).select('count(id)').to_sql if all.try(:ignored)
+      builds = all.select('count(*)').to_sql
+      success = all.success.select('count(*)').to_sql
+      ignored = all.ignored.select('count(*)').to_sql if all.try(:ignored)
       ignored ||= '0'
-      pending = all.pending.select('count(id)').to_sql
-      running = all.running.select('count(id)').to_sql
-      canceled = all.canceled.select('count(id)').to_sql
+      pending = all.pending.select('count(*)').to_sql
+      running = all.running.select('count(*)').to_sql
+      canceled = all.canceled.select('count(*)').to_sql
 
       deduce_status = "(CASE
         WHEN (#{builds})=0 THEN 'skipped'
@@ -24,7 +26,7 @@ module CiStatus
     end
 
     def status
-      pluck(self.status_sql).first
+      all.pluck(self.status_sql).first
     end
 
     def duration
@@ -34,7 +36,7 @@ module CiStatus
   end
 
   included do
-    validates :status, inclusion: { in: %w(pending running failed success canceled skipped) }
+    validates :status, inclusion: { in: AVAILABLE_STATUSES }
 
     state_machine :status, initial: :pending do
       state :pending, value: 'pending'

spec/lib/ci/status_spec.rb

@@ -8,7 +8,7 @@ describe CiStatus do
 
   describe '.status' do
     before do
-      allow(@object).to receive(:all).and_return(statuses)
+      allow(@object).to receive(:all).and_return(CommitStatus.where(id: statuses))
     end
 
     subject { @object.status }