Fix flaky encoding/search tests.

Author: simi

test/integration/api/v1/search_test.rb

@@ -1,7 +1,11 @@
 require "test_helper"
 
 class Api::V1::Search < ActionDispatch::IntegrationTest
+  include SearchKickHelper
+
   test "request with non-string query shows bad request" do
+    import_and_refresh
+
     get "/api/v1/search.json?query[]="
 
     assert_response :bad_request

test/integration/encoding_test.rb

@@ -1,7 +1,11 @@
 require "test_helper"
 
 class EncodingTest < ActionDispatch::IntegrationTest
+  include SearchKickHelper
+
   test "invalid utf-8 characters should be sanitized" do
+    import_and_refresh
+
     get "/api/v1/search.json?query=vagrant%ADvbguest"
 
     assert_response :success