ucx: test/test_map.cpp@fd3368c20413 (annotated)

test/test_map.cpp@fd3368c20413 (annotated)

test/test_map.cpp

Fri, 27 May 2022 17:40:27 +0200

author: Mike Becker <universe@uap-core.de>
date: Fri, 27 May 2022 17:40:27 +0200
changeset 562: fd3368c20413
parent 561: bb17790af41e
child 563: 69a83fad8a35
permissions: -rw-r--r--

#189 #199 implement and test map rehash

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *   1. Redistributions of source code must retain the above copyright
  *      notice, this list of conditions and the following disclaimer.
  *
  *   2. Redistributions in binary form must reproduce the above copyright
  *      notice, this list of conditions and the following disclaimer in the
  *      documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include "cx/hash_map.h"
 #include "cx/utils.h"
 #include "util_allocator.h"
 #include <gtest/gtest.h>
 #include <unordered_map>
 #include <unordered_set>
 struct map_operation {
     enum {
         put, rm
     } op;
     char const *key;
     char const *value;
 };
 auto generate_map_operations() -> std::vector<map_operation> {
     return {
             {map_operation::put, "key 1",          "test"},
             {map_operation::put, "key 2",          "blub"},
             {map_operation::put, "key 3",          "hallo"},
             {map_operation::put, "key 2",          "foobar"},
             {map_operation::put, "key 4",          "value 4"},
             {map_operation::put, "key 5",          "value 5"},
             {map_operation::put, "key 6",          "value 6"},
             {map_operation::rm,  "key 4",          nullptr},
             {map_operation::put, "key 7",          "value 7"},
             {map_operation::put, "key 8",          "value 8"},
             {map_operation::rm,  "does not exist", nullptr},
             {map_operation::put, "key 9",          "value 9"},
             {map_operation::put, "key 6",          "other value"},
             {map_operation::put, "key 7",          "something else"},
             {map_operation::rm,  "key 8",          nullptr},
             {map_operation::rm,  "key 2",          nullptr},
             {map_operation::put, "key 8",          "new value"},
     };
 }
 static void verify_map_contents(
         CxMap *map,
         std::unordered_map<std::string, std::string> const &refmap
 ) {
     // verify key iterator
     {
         auto keyiter = cxMapIteratorKeys(map);
         std::unordered_set<std::string> keys;
         cx_foreach(CxDataPtr*, elem, keyiter) {
             // we use that our test keys contain NULL-terminated strings
             keys.insert(std::string(reinterpret_cast<const char *>(elem->data)));
         }
         EXPECT_EQ(keyiter.index, map->size);
         ASSERT_EQ(keys.size(), map->size);
         for (auto &&k: keys) {
             EXPECT_NE(refmap.find(k), refmap.end());
         }
     }
     // verify value iterator
     {
         auto valiter = cxMapIteratorValues(map);
         std::unordered_set<std::string> values; // we use that the values in our test data are unique strings
         cx_foreach(char const*, elem, valiter) {
             values.insert(std::string(elem));
         }
         EXPECT_EQ(valiter.index, map->size);
         ASSERT_EQ(values.size(), map->size);
         for (auto &&v: values) {
             EXPECT_NE(std::find_if(refmap.begin(), refmap.end(),
                                    [v](auto const &e) { return e.second == v; }), refmap.end());
         }
     }
     // verify pair iterator
     {
         auto pairiter = cxMapIterator(map);
         std::unordered_map<std::string, std::string> pairs;
         cx_foreach(CxMapEntry*, entry, pairiter) {
             pairs[std::string((char const *) entry->key->data)] = std::string((char *) entry->value);
         }
         EXPECT_EQ(pairiter.index, map->size);
         ASSERT_EQ(pairs.size(), refmap.size());
         for (auto &&p: pairs) {
             ASSERT_EQ(p.second, refmap.at(p.first));
         }
     }
 }
 TEST(CxHashMap, Create) {
     CxTestingAllocator allocator;
     auto map = cxHashMapCreate(&allocator, 0);
     auto hmap = reinterpret_cast<struct cx_hash_map_s *>(map);
     EXPECT_GT(hmap->bucket_count, 0);
     cx_for_n(i, hmap->bucket_count) {
         EXPECT_EQ(hmap->buckets[i], nullptr);
     }
     EXPECT_EQ(map->size, 0);
     EXPECT_EQ(map->allocator, &allocator);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, BasicOperations) {
     // create the map
     CxTestingAllocator allocator;
     auto map = cxHashMapCreate(&allocator, 8);
     // create a reference map
     std::unordered_map<std::string, std::string> refmap;
     // generate operations
     auto ops = generate_map_operations();
     // verify iterators for empty map
     verify_map_contents(map, refmap);
     // execute operations and verify results
     for (auto &&op: ops) {
         CxDataPtr key = cxMapKeyStr(op.key);
         if (op.op == map_operation::put) {
             // execute a put operation and verify that the exact value can be read back
             refmap[std::string(op.key)] = std::string(op.value);
             int result = cxMapPut(map, key, (void *) op.value);
             EXPECT_EQ(result, 0);
             auto added = cxMapGet(map, key);
             EXPECT_EQ(memcmp(op.value, added, strlen(op.value)), 0);
         } else {
             // execute a remove and verify that the removed element was returned (or nullptr)
             auto found = refmap.find(op.key);
             auto removed = cxMapRemove(map, key);
             if (found == refmap.end()) {
                 EXPECT_EQ(removed, nullptr);
             } else {
                 EXPECT_EQ(std::string((char *) removed), found->second);
                 refmap.erase(found);
             }
         }
         // compare the current map state with the reference map
         verify_map_contents(map, refmap);
     }
     // destroy the map and verify the memory (de)allocations
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, RemoveViaIterator) {
     CxTestingAllocator allocator;
     auto map = cxHashMapCreate(&allocator, 4);
     cxMapPut(map, cxMapKeyStr("key 1"), (void *) "val 1");
     cxMapPut(map, cxMapKeyStr("key 2"), (void *) "val 2");
     cxMapPut(map, cxMapKeyStr("key 3"), (void *) "val 3");
     cxMapPut(map, cxMapKeyStr("key 4"), (void *) "val 4");
     cxMapPut(map, cxMapKeyStr("key 5"), (void *) "val 5");
     cxMapPut(map, cxMapKeyStr("key 6"), (void *) "val 6");
     auto iter = cxMapIterator(map);
     cx_foreach(CxMapEntry*, entry, iter) {
         if (entry->key->data[4] % 2 == 1) iter.remove = true;
     }
     EXPECT_EQ(map->size, 3);
     EXPECT_EQ(iter.index, map->size);
     EXPECT_EQ(cxMapGet(map, cxMapKeyStr("key 1")), nullptr);
     EXPECT_NE(cxMapGet(map, cxMapKeyStr("key 2")), nullptr);
     EXPECT_EQ(cxMapGet(map, cxMapKeyStr("key 3")), nullptr);
     EXPECT_NE(cxMapGet(map, cxMapKeyStr("key 4")), nullptr);
     EXPECT_EQ(cxMapGet(map, cxMapKeyStr("key 5")), nullptr);
     EXPECT_NE(cxMapGet(map, cxMapKeyStr("key 6")), nullptr);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, RehashNotRequired) {
     CxTestingAllocator allocator;
     auto map = cxHashMapCreate(&allocator, 8);
     cxMapPut(map, cxMapKeyStr("key 1"), (void *) "val 1");
     cxMapPut(map, cxMapKeyStr("key 2"), (void *) "val 2");
     cxMapPut(map, cxMapKeyStr("key 3"), (void *) "val 3");
     cxMapPut(map, cxMapKeyStr("key 4"), (void *) "val 4");
     cxMapPut(map, cxMapKeyStr("key 5"), (void *) "val 5");
     cxMapPut(map, cxMapKeyStr("key 6"), (void *) "val 6");
     // 6/8 does not exceed 0.75, therefore the function should not rehash
     int result = cxMapRehash(map);
     EXPECT_EQ(result, 0);
     EXPECT_EQ(reinterpret_cast<struct cx_hash_map_s *>(map)->bucket_count, 8);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, Rehash) {
     CxTestingAllocator allocator;
     auto map = cxHashMapCreate(&allocator, 8);
     cxMapPut(map, cxMapKeyStr("key 1"), (void *) "val 1");
     cxMapPut(map, cxMapKeyStr("key 2"), (void *) "val 2");
     cxMapPut(map, cxMapKeyStr("key 3"), (void *) "val 3");
     cxMapPut(map, cxMapKeyStr("key 4"), (void *) "val 4");
     cxMapPut(map, cxMapKeyStr("key 5"), (void *) "val 5");
     cxMapPut(map, cxMapKeyStr("key 6"), (void *) "val 6");
     cxMapPut(map, cxMapKeyStr("key 7"), (void *) "val 7");
     int result = cxMapRehash(map);
     EXPECT_EQ(result, 0);
     EXPECT_EQ(reinterpret_cast<struct cx_hash_map_s *>(map)->bucket_count, 17);
     EXPECT_EQ(map->size, 7);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 1")), "val 1"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 2")), "val 2"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 3")), "val 3"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 4")), "val 4"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 5")), "val 5"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 6")), "val 6"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cxMapKeyStr("key 7")), "val 7"), 0);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }

Mercurial > hg > ucx / annotate

test/test_map.cpp@fd3368c20413 (annotated)

test/test_map.cpp