diff --git a/test/where_test.rb b/test/where_test.rb
index 2b22fc0..5c71b53 100644
--- a/test/where_test.rb
+++ b/test/where_test.rb
@@ -77,17 +77,19 @@ class WhereTest < Minitest::Test
   end
 
   def test_where_string_operators
-    store [
-      {name: "Product A", store_id: 1},
-      {name: "Product B", store_id: 2}
-    ]
-
     error = assert_raises RuntimeError do
       assert_search "product", [], where: {store_id: {"lt" => 2}}
     end
     assert_includes error.message, "Unknown where operator"
   end
 
+  def test_unknown_operator
+    error = assert_raises RuntimeError do
+      assert_search "product", [], where: {store_id: {ilike: "%2%"}}
+    end
+    assert_includes error.message, "Unknown where operator"
+  end
+
   def test_regexp
     store_names ["Product A"]
     assert_search "*", ["Product A"], where: {name: /\APro.+\z/}
--
libgit2 0.21.0