Add EPP session tests

#700

test/integration/epp/session/logout_test.rb

@@ -0,0 +1,29 @@
+require 'test_helper'
+
+class EppLogoutTest < ActionDispatch::IntegrationTest
+  def setup
+    @request_xml = <<-XML
+      <?xml version="1.0" encoding="UTF-8" standalone="no"?>
+      <epp xmlns="https://epp.tld.ee/schema/epp-ee-1.0.xsd">
+        <command>
+          <logout/>
+        </command>
+      </epp>
+    XML
+
+    post '/epp/session/logout', { frame: @request_xml }, { 'HTTP_COOKIE' => 'session=api_bestnames' }
+  end
+
+  def test_success_response
+    assert Nokogiri::XML(response.body).at_css('result[code="1500"]')
+    assert_equal 1, Nokogiri::XML(response.body).css('result').size
+  end
+
+  def test_ends_current_session
+    assert_nil EppSession.find_by(session_id: 'api_bestnames')
+  end
+
+  def test_keeps_other_sessions_intact
+    assert EppSession.find_by(session_id: 'api_goodnames')
+  end
+end