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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 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 "map_tests.h"

UCX_TEST_IMPLEMENT(test_ucx_map_new) {
    UcxMap *map = ucx_map_new(16);
    UCX_TEST_BEGIN
    UCX_TEST_ASSERT(map->size == 16, "wrong size");
    UCX_TEST_ASSERT(map->map != NULL, "failed");
    
    UCX_TEST_END
    ucx_map_free(map);
}

UCX_TEST_IMPLEMENT(test_ucx_key) {
    UcxKey key = ucx_key((void*)"This is a text.", 15);
    UCX_TEST_BEGIN
    UCX_TEST_ASSERT(strncmp((const char*)key.data, "This is a text.", 15) == 0,
            "failed");
    UCX_TEST_ASSERT(key.len == 15, "failed");
    UCX_TEST_ASSERT(key.hash == 1261186027, "hash failed");
    
    UCX_TEST_END
}

UCX_TEST_IMPLEMENT(test_ucx_map_put) {
    
    UcxMap *map = ucx_map_new(4);
    
    int td[5];
    td[0] = 10; td[1] = 42; td[2] = 70; td[3] = 11200; td[4] = 80000;

    UCX_TEST_BEGIN
    ucx_map_cstr_put(map, "Key2", &td[2]); /* 3.2 */
    ucx_map_cstr_put(map, "Key0", &td[0]); /* 0.0 */
    ucx_map_cstr_put(map, "Key1", &td[1]); /* 3.0 */
    ucx_map_cstr_put(map, "KeY3", &td[3]); /* 3.1 */
    ucx_map_cstr_put(map, "KEY4", &td[4]); /* 1.0 */
    
    UCX_TEST_ASSERT(*((int*)map->map[0]->data) == td[0], "failed Key0");
    UCX_TEST_ASSERT(*((int*)map->map[1]->data) == td[4], "failed KEY4");
    UCX_TEST_ASSERT(*((int*)map->map[3]->data) == td[1], "failed Key1");
    
    UCX_TEST_ASSERT(map->map[3]->next != NULL, "no list at slot 3");
    UCX_TEST_ASSERT(map->map[3]->next->next != NULL, "list corrupt at slot 3");
    UCX_TEST_ASSERT(*((int*)map->map[3]->next->data) == td[3],
            "failed KeY3")
    UCX_TEST_ASSERT(*((int*)map->map[3]->next->next->data) == td[2],
            "failed KeY2");

    UCX_TEST_ASSERT(map->map[0]->next == NULL, "slot 0 not terminated");
    UCX_TEST_ASSERT(map->map[1]->next == NULL, "slot 1 not terminated");
    UCX_TEST_ASSERT(map->map[2] == NULL, "slot 2 not empty");
    UCX_TEST_ASSERT(map->map[3]->next->next->next == NULL,
            "slot 3 not terminated")

    ucx_map_cstr_put(map, "KeY3", &td[4]); /* replace 3.1 */
    
    UCX_TEST_ASSERT(*((int*)map->map[3]->data) == td[1],
            "overwrite failed")
    UCX_TEST_ASSERT(*((int*)map->map[3]->next->data) == td[4],
            "overwrite failed");
    UCX_TEST_ASSERT(*((int*)map->map[3]->next->next->data) == td[2], 
            "overwrite failed")
    UCX_TEST_ASSERT(map->map[3]->next->next->next == NULL, "overwrite failed");
    
    UCX_TEST_END
    ucx_map_free(map);
}

UCX_TEST_IMPLEMENT(test_ucx_map_get) {
    UcxMap *map = ucx_map_new(4);

    int td[5];
    td[0] = 10; td[1] = 42; td[2] = 70; td[3] = 11200; td[4] = 80000;

    ucx_map_cstr_put(map, "Key2", &td[2]);
    ucx_map_cstr_put(map, "Key0", &td[0]);
    ucx_map_cstr_put(map, "Key1", &td[1]);
    ucx_map_cstr_put(map, "KeY3", &td[3]);
    ucx_map_cstr_put(map, "KEY4", &td[4]);
    UCX_TEST_BEGIN

    td[0] = *((int*)ucx_map_cstr_get(map, "Key0"));
    td[1] = *((int*)ucx_map_cstr_get(map, "Key1"));
    td[2] = *((int*)ucx_map_cstr_get(map, "Key2"));
    td[3] = *((int*)ucx_map_cstr_get(map, "KeY3"));
    td[4] = *((int*)ucx_map_cstr_get(map, "KEY4"));
    UCX_TEST_ASSERT(td[0] == 10, "failed key 0");
    UCX_TEST_ASSERT(td[1] == 42, "failed key 1");
    UCX_TEST_ASSERT(td[2] == 70, "failed key 2");
    UCX_TEST_ASSERT(td[3] == 11200, "failed key 3");
    UCX_TEST_ASSERT(td[4] == 80000, "failed key 4");

    UCX_TEST_ASSERT(map->count == 5, "expected 5 remaining values");
    UCX_TEST_ASSERT(ucx_map_cstr_get(map, "Key0") != NULL, "element removed");

    UCX_TEST_END
    ucx_map_free(map);
}

UCX_TEST_IMPLEMENT(test_ucx_map_remove) {
    UcxMap *map = ucx_map_new(4);

    int td[5];
    td[0] = 10; td[1] = 42; td[2] = 70; td[3] = 11200; td[4] = 80000;

    ucx_map_cstr_put(map, "Key2", &td[2]); /* 0 */
    ucx_map_cstr_put(map, "Key0", &td[0]); /* 0 */
    ucx_map_cstr_put(map, "Key1", &td[1]); /* 3 */
    ucx_map_cstr_put(map, "KeY3", &td[3]); /* 2 */
    ucx_map_cstr_put(map, "KEY4", &td[4]); /* 0 */
    UCX_TEST_BEGIN

    td[0] = *((int*)ucx_map_cstr_remove(map, "Key0"));
    td[1] = *((int*)ucx_map_cstr_get(map, "Key1"));
    td[2] = *((int*)ucx_map_cstr_remove(map, "Key2"));
    td[3] = *((int*)ucx_map_cstr_get(map, "KeY3"));
    td[4] = *((int*)ucx_map_cstr_get(map, "KEY4"));
    UCX_TEST_ASSERT(td[0] == 10, "failed key 0");
    UCX_TEST_ASSERT(td[1] == 42, "failed key 1");
    UCX_TEST_ASSERT(td[2] == 70, "failed key 2");
    UCX_TEST_ASSERT(td[3] == 11200, "failed key 3");
    UCX_TEST_ASSERT(td[4] == 80000, "failed key 4");

    UCX_TEST_ASSERT(map->count == 3, "expected 3 remaining values");
    UCX_TEST_ASSERT(ucx_map_cstr_get(map, "Key0")==NULL, "element not removed");
    UCX_TEST_ASSERT(ucx_map_cstr_get(map, "Key1")!=NULL, "element removed");
    UCX_TEST_ASSERT(ucx_map_cstr_get(map, "Key2")==NULL, "element not removed");
    UCX_TEST_ASSERT(ucx_map_cstr_get(map, "KeY3")!=NULL, "element removed");
    UCX_TEST_ASSERT(ucx_map_cstr_get(map, "KEY4")!=NULL, "element removed");

    UCX_TEST_ASSERT(ucx_map_cstr_remove(map, "Key2") == NULL,
            "subsequent remove call shall return NULL");

    UCX_TEST_END
    ucx_map_free(map);
}

UCX_TEST_SUBROUTINE(test_ucx_map_itersrt, UcxMap *map) {
    int v1 = 10;
    int v2 = 15;
    int v3 = 7;
    int v4 = 9;

    ucx_map_cstr_put(map, "v1", &v1);
    ucx_map_cstr_put(map, "v2", &v2);
    ucx_map_cstr_put(map, "v3", &v3);
    ucx_map_cstr_put(map, "v4", &v4);

    UcxMapIterator i = ucx_map_iterator(map);
    int check = 0;
    int hit = 0;

    int* v;
    UCX_MAP_FOREACH(v, i) {
        check += *v;
        hit++;
    }

    UCX_TEST_ASSERT(hit == 4, "test1: wrong number of hits");
    UCX_TEST_ASSERT(check == v1+v2+v3+v4, "test1: wrong result");
}

UCX_TEST_IMPLEMENT(test_ucx_map_iterator) {
    UcxMap *map = ucx_map_new(16);
    UCX_TEST_BEGIN
    UCX_TEST_CALL_SUBROUTINE(test_ucx_map_itersrt, map)
    UCX_TEST_END
    ucx_map_free(map);
}

UCX_TEST_IMPLEMENT(test_ucx_map_iterator_chain) {
    UcxMap *map = ucx_map_new(1);
    UCX_TEST_BEGIN
    UCX_TEST_CALL_SUBROUTINE(test_ucx_map_itersrt, map)
    UCX_TEST_END
    ucx_map_free(map);
}

void* test_ucx_map_store_load_encdec(void *value, void *data, size_t *size) {
    const char *string = (const char*) value;
    size_t n = strlen(string);
    char *encoded = (char*) malloc(n+1);
    for (size_t i = 0 ; i < n ; i++) {
        encoded[i] = string[n-1-i];
    }
    encoded[n] = 0;
    *size = n+1;
    return encoded;
}

UCX_TEST_IMPLEMENT(test_ucx_map_store_load) {
    UcxMap *map = ucx_map_new(4);

    ucx_map_cstr_put(map, "test", (void*)"test");
    ucx_map_cstr_put(map, "key", (void*)"value");
    ucx_map_cstr_put(map, "other.very.long.key", (void*)"value");
    ucx_map_cstr_put(map, "testkey", (void*)"testvalue");
    ucx_map_cstr_put(map, "simple", (void*)"not a key but an extremely long "
            "value to test if the buffer extension works as designed");

    UCX_TEST_BEGIN
    FILE *f = tmpfile();
    UCX_TEST_ASSERT(f, "test file cannot be opened, test aborted")
    int r;

    fwrite(" # comment test\n", 1, 16, f);
    r = ucx_map_store_enc(map, f, test_ucx_map_store_load_encdec, NULL);
    fwrite("!discard this", 1, 13, f);
    fflush(f);

    ucx_map_free(map);
    map = ucx_map_new(1);
    fseek(f, 0, SEEK_SET);
    UcxAllocator allocator = UCX_ALLOCATOR_DEFAULT;
    r += ucx_map_load_enc(map, f, allocator,
            test_ucx_map_store_load_encdec, NULL);
    fclose(f);

    const char *value;
    UCX_TEST_ASSERT(r == 0, "IO errors, test cannot be performed");

    value = (const char *) ucx_map_cstr_get(map, "test");
    UCX_TEST_ASSERT(value != NULL, "value not found for key: test");
    UCX_TEST_ASSERT(strcmp(value, "test") == 0, "value error for key: test");

    value = (const char *) ucx_map_cstr_get(map, "key");
    UCX_TEST_ASSERT(value != NULL, "value not found for key: key");
    UCX_TEST_ASSERT(strcmp(value, "value") == 0, "value error for key: key");

    value = (const char *) ucx_map_cstr_get(map, "other.very.long.key");
    UCX_TEST_ASSERT(value != NULL,
            "value not found for key: other.very.long.key");
    UCX_TEST_ASSERT(strcmp(value, "value") == 0,
            "value error for key: other.very.long.key");

    value = (const char *) ucx_map_cstr_get(map, "testkey");
    UCX_TEST_ASSERT(value != NULL, "value not found for key: testkey");
    UCX_TEST_ASSERT(strcmp(value, "testvalue") == 0,
            "value error for key: testkey");

    value = (const char *) ucx_map_cstr_get(map, "simple");
    UCX_TEST_ASSERT(value != NULL, "value not found for key: simple");
    UCX_TEST_ASSERT(strcmp(value, "not a key but an extremely long value "
            "to test if the buffer extension works as designed") == 0,
            "value error for key: simple");

    void *d;
    UcxMapIterator iter = ucx_map_iterator(map);
    UCX_MAP_FOREACH(d, iter) {
        free(d);
    }
    ucx_map_free(map);
    UCX_TEST_END
}

UCX_TEST_IMPLEMENT(test_ucx_map_store_load_with_mempool) {
    UcxMap *map = ucx_map_new(4);

    ucx_map_cstr_put(map, "test", (void*)"test");
    ucx_map_cstr_put(map, "key", (void*)"value");
    ucx_map_cstr_put(map, "testkey", (void*)"testvalue");
    ucx_map_cstr_put(map, "simple", (void*)"a simple value");

    UCX_TEST_BEGIN
    FILE *f = tmpfile();
    UCX_TEST_ASSERT(f, "test file cannot be opened, test aborted");
    int r;
    r = ucx_map_store_enc(map, f, NULL, NULL);
    ucx_map_free(map);
    fflush(f);

    UcxMempool *pool = ucx_mempool_new(4);
    map = ucx_map_new(4);
    fseek(f, 0, SEEK_SET);
    UcxAllocator allocator = UCX_ALLOCATOR_MEMPOOL(pool);
    r += ucx_map_load_enc(map, f, allocator,
            test_ucx_map_store_load_encdec, NULL);
    fclose(f);

    UCX_TEST_ASSERT(r == 0, "IO errors, test cannot be performed");
    UcxMapIterator iter = ucx_map_iterator(map);
    const char *value; size_t n;
    UCX_MAP_FOREACH(value, iter) {
        n = strlen(value);
        UCX_TEST_ASSERT(strncmp((const char*) pool->data[iter.index], value, n),
                "values of map does not match pooled values");
    }

    ucx_mempool_free(pool);
    ucx_map_free(map);
    UCX_TEST_END
}

UCX_TEST_IMPLEMENT(test_ucx_map_clone) {
    UcxMap *map = ucx_map_new(4);
    
    ucx_map_cstr_put(map, "key1", (void*)"value1");
    ucx_map_cstr_put(map, "key2", (void*)"value2");
    ucx_map_cstr_put(map, "key3", (void*)"value3");
    
    UcxMap *clone = ucx_map_clone(map, NULL, NULL);
    
    const char *v1 = (const char *) ucx_map_cstr_get(map, "key1");
    const char *v2 = (const char *) ucx_map_cstr_get(map, "key2");
    const char *v3 = (const char *) ucx_map_cstr_get(map, "key3");
    
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(v1 != NULL, "failed key 1");
    UCX_TEST_ASSERT(v2 != NULL, "failed key 2");
    UCX_TEST_ASSERT(v3 != NULL, "failed key 3");
    
    const char *c1 = (const char *) ucx_map_cstr_get(clone, "key1");
    const char *c2 = (const char *) ucx_map_cstr_get(clone, "key2");
    const char *c3 = (const char *) ucx_map_cstr_get(clone, "key3");
    
    UCX_TEST_ASSERT(c1 != NULL, "failed key 1 (clone)");
    UCX_TEST_ASSERT(c2 != NULL, "failed key 2 (clone)");
    UCX_TEST_ASSERT(c3 != NULL, "failed key 3 (clone)");
    
    UCX_TEST_ASSERT(strcmp(c1, v1) == 0, "value error for key1");
    UCX_TEST_ASSERT(strcmp(c2, v2) == 0, "value error for key2");
    UCX_TEST_ASSERT(strcmp(c3, v3) == 0, "value error for key3");
    
    UCX_TEST_END
    
    ucx_map_free(map);
    ucx_map_free(clone);
}

UCX_TEST_IMPLEMENT(test_ucx_map_rehash) {
    UcxMap *map = ucx_map_new(4);

    char keys[10][5];
    char values[10][7];
    for (int i = 0 ; i < 10 ; i++) {
        strcpy(keys[i], "key");
        keys[i][3] = 48+i; keys[i][4] = 0;
        strcpy(values[i], "value");
        values[i][5] = 48+i; values[i][6] = 0;

        ucx_map_cstr_put(map, keys[i], values[i]);
    }

    ucx_map_rehash(map);

    UCX_TEST_BEGIN
    UCX_TEST_ASSERT(map->size == 25, "new capacity shall be 2.5 * count");
    UCX_TEST_ASSERT(map->count == 10, "new map element count incorrect");
    for (int i = 0 ; i < 10 ; i++) {
        const char *value = (const char *) ucx_map_cstr_get(map, keys[i]);
        UCX_TEST_ASSERT(value != NULL, "new map is missing old keys");
        UCX_TEST_ASSERT(strncmp(value, values[i], 6) == 0,
                "new map contains incorrect values");
    }
    ucx_map_rehash(map);
    UCX_TEST_ASSERT(map->size == 25,
            "subsequent rehashing call shall not change size");
    UCX_TEST_END

    ucx_map_free(map);
}