ucx: tests/test_map.cpp@56c62780582e (annotated)

tests/test_map.cpp@56c62780582e (annotated)

tests/test_map.cpp

Thu, 23 Feb 2023 18:58:15 +0100

author: Mike Becker <universe@uap-core.de>
date: Thu, 23 Feb 2023 18:58:15 +0100
changeset 658: 56c62780582e
parent 653: e081643aae2a
child 659: 4a06fd63909a
permissions: -rw-r--r--

make hashmap store objects instead of pointers by default - fixes #239

 /*
  * 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 "cx/string.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(CxHashKey*, elem, keyiter) {
             keys.insert(std::string(elem->data.cstr, elem->len));
         }
         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(entry->key->data.cstr, entry->key->len)] = 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, 1, 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->itemsize, 1);
     EXPECT_EQ(map->size, 0);
     EXPECT_EQ(map->allocator, &allocator);
     EXPECT_FALSE(map->store_pointers);
     cxMapStorePointers(map);
     EXPECT_TRUE(map->store_pointers);
     EXPECT_EQ(map->itemsize, sizeof(void *));
     cxMapStoreObjects(map);
     EXPECT_FALSE(map->store_pointers);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, BasicOperations) {
     // create the map
     CxTestingAllocator allocator;
     auto map = cxHashMapCreateForPointers(&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) {
         CxHashKey key = cx_hash_key_str(op.key);
         key.hash = 0; // force the hash map to compute the hash
         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 = cxHashMapCreateForPointers(&allocator, 4);
     cxMapPut(map, cx_hash_key_str("key 1"), (void *) "val 1");
     cxMapPut(map, cx_hash_key_str("key 2"), (void *) "val 2");
     cxMapPut(map, cx_hash_key_str("key 3"), (void *) "val 3");
     cxMapPut(map, cx_hash_key_str("key 4"), (void *) "val 4");
     cxMapPut(map, cx_hash_key_str("key 5"), (void *) "val 5");
     cxMapPut(map, cx_hash_key_str("key 6"), (void *) "val 6");
     auto iter = cxMapMutIterator(map);
     cx_foreach(CxMapEntry*, entry, iter) {
         if (entry->key->data.cstr[4] % 2 == 1) cxIteratorFlagRemoval(iter);
     }
     EXPECT_EQ(map->size, 3);
     EXPECT_EQ(iter.index, map->size);
     EXPECT_EQ(cxMapGet(map, cx_hash_key_str("key 1")), nullptr);
     EXPECT_NE(cxMapGet(map, cx_hash_key_str("key 2")), nullptr);
     EXPECT_EQ(cxMapGet(map, cx_hash_key_str("key 3")), nullptr);
     EXPECT_NE(cxMapGet(map, cx_hash_key_str("key 4")), nullptr);
     EXPECT_EQ(cxMapGet(map, cx_hash_key_str("key 5")), nullptr);
     EXPECT_NE(cxMapGet(map, cx_hash_key_str("key 6")), nullptr);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, RehashNotRequired) {
     CxTestingAllocator allocator;
     auto map = cxHashMapCreateForPointers(&allocator, 8);
     cxMapPut(map, cx_hash_key_str("key 1"), (void *) "val 1");
     cxMapPut(map, cx_hash_key_str("key 2"), (void *) "val 2");
     cxMapPut(map, cx_hash_key_str("key 3"), (void *) "val 3");
     cxMapPut(map, cx_hash_key_str("key 4"), (void *) "val 4");
     cxMapPut(map, cx_hash_key_str("key 5"), (void *) "val 5");
     cxMapPut(map, cx_hash_key_str("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 = cxHashMapCreateForPointers(&allocator, 8);
     cxMapPut(map, cx_hash_key_str("key 1"), (void *) "val 1");
     cxMapPut(map, cx_hash_key_str("key 2"), (void *) "val 2");
     cxMapPut(map, cx_hash_key_str("key 3"), (void *) "val 3");
     cxMapPut(map, cx_hash_key_str("key 4"), (void *) "val 4");
     cxMapPut(map, cx_hash_key_str("key 5"), (void *) "val 5");
     cxMapPut(map, cx_hash_key_str("key 6"), (void *) "val 6");
     cxMapPut(map, cx_hash_key_str("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, cx_hash_key_str("key 1")), "val 1"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cx_hash_key_str("key 2")), "val 2"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cx_hash_key_str("key 3")), "val 3"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cx_hash_key_str("key 4")), "val 4"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cx_hash_key_str("key 5")), "val 5"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cx_hash_key_str("key 6")), "val 6"), 0);
     EXPECT_EQ(strcmp((char *) cxMapGet(map, cx_hash_key_str("key 7")), "val 7"), 0);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, Clear) {
     CxTestingAllocator allocator;
     auto map = cxHashMapCreateForPointers(&allocator, 0);
     cxMapPut(map, cx_hash_key_str("key 1"), (void *) "val 1");
     cxMapPut(map, cx_hash_key_str("key 2"), (void *) "val 2");
     cxMapPut(map, cx_hash_key_str("key 3"), (void *) "val 3");
     EXPECT_EQ(map->size, 3);
     cxMapClear(map);
     EXPECT_EQ(map->size, 0);
     EXPECT_EQ(cxMapGet(map, cx_hash_key_str("key 1")), nullptr);
     EXPECT_EQ(cxMapGet(map, cx_hash_key_str("key 2")), nullptr);
     EXPECT_EQ(cxMapGet(map, cx_hash_key_str("key 3")), nullptr);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(CxHashMap, StoreUcxStrings) {
     // create the map
     CxTestingAllocator allocator;
     auto map = cxHashMapCreate(&allocator, sizeof(cxstring), 8);
     // define some strings
     cxstring s1 = CX_STR("this");
     cxstring s2 = CX_STR("is");
     cxstring s3 = CX_STR("a");
     cxstring s4 = CX_STR("test");
     cxstring s5 = CX_STR("setup");
     // put them into the map
     cxMapPut(map, cx_hash_key_str("s1"), &s1);
     cxMapPut(map, cx_hash_key_str("s2"), &s2);
     cxMapPut(map, cx_hash_key_str("s3"), &s3);
     cxMapPut(map, cx_hash_key_str("s4"), &s4);
     // overwrite a value
     cxMapPut(map, cx_hash_key_str("s1"), &s5);
     // look up a string
     auto s3p = reinterpret_cast<cxstring *>(cxMapGet(map, cx_hash_key_str("s3")));
     EXPECT_EQ(s3p->length, s3.length);
     EXPECT_EQ(s3p->ptr, s3.ptr);
     EXPECT_NE(s3p, &s3);
     // remove a string
     auto r = cxMapRemove(map, cx_hash_key_str("s2"));
     EXPECT_EQ(r, nullptr);
     // iterate
     auto ref = std::vector{s5.ptr, s3.ptr, s4.ptr};
     auto iter = cxMapIteratorValues(map);
     cx_foreach(cxstring*, s, iter) {
         auto found = std::find(ref.begin(), ref.end(), s->ptr);
         ASSERT_NE(found, ref.end());
         ref.erase(found);
     }
     EXPECT_EQ(ref.size(), 0);
     cxMapDestroy(map);
     EXPECT_TRUE(allocator.verify());
 }

Mercurial > hg > ucx / annotate

tests/test_map.cpp@56c62780582e (annotated)

tests/test_map.cpp