diff --git a/spec/services/filtering_service_spec.rb b/spec/services/filtering_service_spec.rb
new file mode 100644
index 0000000..5966012
--- /dev/null
+++ b/spec/services/filtering_service_spec.rb
@@ -0,0 +1,65 @@
+require 'spec_helper'
+
+describe FilteringService do
+  let(:user) { create :user }
+  let(:user2) { create :user }
+  let(:project1) { create(:project) }
+  let(:project2) { create(:project) }
+  let(:merge_request1) { create(:merge_request, author: user, source_project: project1, target_project: project2) }
+  let(:merge_request2) { create(:merge_request, author: user, source_project: project2, target_project: project1) }
+  let(:merge_request3) { create(:merge_request, author: user, source_project: project2, target_project: project2) }
+  let(:issue1) { create(:issue, assignee: user, project: project1) }
+  let(:issue2) { create(:issue, assignee: user, project: project2) }
+  let(:issue3) { create(:issue, assignee: user2, project: project2) }
+
+  before do
+    project1.team << [user, :master]
+    project2.team << [user, :developer]
+  end
+
+  describe 'merge requests' do
+    before :each do
+      merge_request1
+      merge_request2
+      merge_request3
+    end
+
+    it 'should filter by scope' do
+      params = { scope: 'authored', state: 'opened' }
+      merge_requests = FilteringService.new.execute(MergeRequest, user, params)
+      merge_requests.size.should == 3
+    end
+
+    it 'should filter by project' do
+      params = { project_id: project1.id, scope: 'authored', state: 'opened' }
+      merge_requests = FilteringService.new.execute(MergeRequest, user, params)
+      merge_requests.size.should == 1
+    end
+  end
+
+  describe 'issues' do
+    before :each do
+      issue1
+      issue2
+      issue3
+    end
+
+    it 'should filter by all' do
+      params = { scope: "all", state: 'opened' }
+      issues = FilteringService.new.execute(Issue, user, params)
+      issues.size.should == 3
+    end
+
+    it 'should filter by assignee' do
+      params = { scope: "assigned-to-me", state: 'opened' }
+      issues = FilteringService.new.execute(Issue, user, params)
+      issues.size.should == 2
+    end
+
+    it 'should filter by project' do
+      params = { scope: "assigned-to-me", state: 'opened', project_id: project1.id }
+      issues = FilteringService.new.execute(Issue, user, params)
+      issues.size.should == 1
+    end
+  end
+end
--
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