// it's shared to avoid using too much memory in tests
    double[] sharedArray = new double[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Doubles.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testEnsureCapacity() {
    assertThat(Doubles.ensureCapacity(EMPTY, 0, 1)).isSameInstanceAs(EMPTY);

        @Override
        protected SearchResult search(String query, SearchRequestParams params, OptionalThing<FessUserBean> userBean) {
            try {
                Thread.sleep(delayMs);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }

            SearchResultBuilder builder = SearchResult.create();
            for (int i = 0; i < 10; i++) {

                    List<P> problems = getProblems(s);
                    while (!problems.isEmpty()) {
                        try {
                            return problems.remove(0) != null;
                        } catch (IndexOutOfBoundsException e) {
                            // empty, continue
                        }
                    }
                }
            }
            return false;
        }
    }

            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setSessionId(DfTypeUtil.toString(source.get("sessionId")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

            result.setUpdatedBy(DfTypeUtil.toString(source.get("updatedBy")));
            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));
            result.setUserAgent(DfTypeUtil.toString(source.get("userAgent")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

            // FIXME There should be no duplicates, yet there are some
            return upgradedProperties.stream()
                .distinct()
                .collect(ImmutableList.toImmutableList());
        } catch (IOException e) {
            throw UncheckedException.throwAsUncheckedException(e);
        }
    }

    /**
     * Automatically accept changes that are valid property upgrades of a getter or setter.
     *

        exceptionParams.put("throwException", true);

        try {
            queryRescorer.evaluate(exceptionParams);
            fail("Expected RuntimeException");
        } catch (RuntimeException e) {
            assertEquals("Test exception", e.getMessage());
        }
    }

    @Test
    public void test_evaluate_concurrency() {
        queryRescorer = new QueryRescorer() {

     */
    protected FilterChain createDefaultFilterChain() {
        return query -> {
            try {
                return createQueryParser().parse(query);
            } catch (final ParseException e) {
                throw new QueryParseException(e);
            }
        };
    }

    /**
     * Interface for query filters that can modify or transform queries.

            result.setUidNumber(DfTypeUtil.toLong(source.get("uidNumber")));
            result.setX121Address(DfTypeUtil.toString(source.get("x121Address")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }