| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include <catch.hpp> |
| #include <sstream> |
| |
| #include "frequent_items_sketch.hpp" |
| #include "test_type.hpp" |
| |
| namespace datasketches { |
| |
| typedef frequent_items_sketch<test_type, float, test_type_hash, test_type_equal, test_type_serde> frequent_test_type_sketch; |
| |
| TEST_CASE("frequent items: custom type", "[frequent_items_sketch]") { |
| frequent_test_type_sketch sketch(3); |
| sketch.update(1, 10); // should survive the purge |
| sketch.update(2); |
| sketch.update(3); |
| sketch.update(4); |
| sketch.update(5); |
| sketch.update(6); |
| sketch.update(7); |
| test_type a8(8); |
| sketch.update(a8); |
| REQUIRE_FALSE(sketch.is_empty()); |
| REQUIRE(sketch.get_total_weight() == 17); |
| REQUIRE(sketch.get_estimate(1) == 10); |
| //std::cerr << "num active: " << sketch.get_num_active_items() << std::endl; |
| |
| //std::cerr << "get frequent items" << std::endl; |
| auto items = sketch.get_frequent_items(frequent_items_error_type::NO_FALSE_POSITIVES); |
| REQUIRE(items.size() == 1); // only 1 item should be above threshold |
| REQUIRE(items[0].get_item().get_value() == 1); |
| REQUIRE(items[0].get_estimate() == 10); |
| |
| std::stringstream s(std::ios::in | std::ios::out | std::ios::binary); |
| //std::cerr << "serialize" << std::endl; |
| sketch.serialize(s); |
| //std::cerr << "deserialize" << std::endl; |
| auto sketch2 = frequent_test_type_sketch::deserialize(s); |
| REQUIRE_FALSE(sketch2.is_empty()); |
| REQUIRE(sketch2.get_total_weight() == 17); |
| REQUIRE(sketch2.get_estimate(1) == 10); |
| REQUIRE(sketch.get_num_active_items() == sketch2.get_num_active_items()); |
| REQUIRE(sketch.get_maximum_error() == sketch2.get_maximum_error()); |
| //std::cerr << "end" << std::endl; |
| |
| std::cout << sketch2.to_string(true); |
| } |
| |
| // this is to see the debug print from test_type if enabled there to make sure items are moved |
| TEST_CASE("frequent items: moving merge", "[frequent_items_sketch]") { |
| frequent_test_type_sketch sketch1(3); |
| sketch1.update(1); |
| |
| frequent_test_type_sketch sketch2(3); |
| sketch2.update(2); |
| |
| sketch2.merge(std::move(sketch1)); |
| REQUIRE(sketch2.get_total_weight() == 2); |
| } |
| |
| TEST_CASE("frequent items: negative weight", "[frequent_items_sketch]") { |
| frequent_test_type_sketch sketch(3); |
| REQUIRE_THROWS_AS(sketch.update(1, -1), std::invalid_argument); |
| } |
| |
| } /* namespace datasketches */ |