String url = "http://example.com/thread" + threadIndex + "/doc" + j;
                        // Simulate the synchronized access that happens in deleteDocument()
                        synchronized (mockCallback) {
                            callback.deleteUrlList.add(url);
                        }
                    }
                } catch (Exception e) {

                return true;
            }
        };
        ComponentUtil.register(client, "searchEngineClient");

        final String id = "001";

        assertTrue(indexingHelper.deleteDocument(client, id));
        assertEquals("fess.update", resultMap.get("index"));
        assertEquals(id, resultMap.get("id"));
    }

    @Test
    public void test_deleteDocumentByUrl() {

    protected static Response deleteMethod(final String path) {
        return given().contentType("application/json").header("Authorization", getTestToken()).delete(path);
    }

    protected static void deleteDocuments(final String queryString) {
        List<String> docIds = new ArrayList<>();
        Response response = given().contentType("application/json")
                .param("scroll", "1m")