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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2017 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 <inttypes.h>

#include "mpool_tests.h"

UCX_TEST(test_ucx_mempool_new) {
    UcxMempool *pool = ucx_mempool_new(16);
    UCX_TEST_BEGIN
    UCX_TEST_ASSERT(pool->size == 16, "wrong size");
    UCX_TEST_ASSERT(pool->ndata == 0, "uninitialized counter");
    UCX_TEST_ASSERT(pool->data != NULL, "no memory addressed");
    UCX_TEST_END
    ucx_mempool_destroy(pool);
}

UCX_TEST(test_ucx_mempool_malloc) {
    
    UcxMempool *pool = ucx_mempool_new(1);
    UCX_TEST_BEGIN
    intptr_t *test = (intptr_t*) ucx_mempool_malloc(pool, sizeof(intptr_t));
    
    UCX_TEST_ASSERT(pool->ndata == 1, "counter not incremented");
    UCX_TEST_ASSERT(pool->size == 1, "chcap called");
    
    intptr_t *pooladdr =
            (intptr_t*)((char*)pool->data[0] + sizeof(ucx_destructor));
    *pooladdr = 5;
    
    UCX_TEST_ASSERT(*test == 5, "wrong pointer");
    
    UCX_TEST_END
    ucx_mempool_destroy(pool);
}

UCX_TEST(test_ucx_mempool_malloc_with_chcap) {
    
    UcxMempool *pool = ucx_mempool_new(1);
    UCX_TEST_BEGIN
    ucx_mempool_malloc(pool, sizeof(int));
    intptr_t *test = (intptr_t*) ucx_mempool_malloc(pool, sizeof(intptr_t));
    
    UCX_TEST_ASSERT(pool->ndata == 2, "counter not incremented");
    UCX_TEST_ASSERT(pool->size == 2, "chcap not called");
    
    intptr_t *pooladdr =
            (intptr_t*)((char*)pool->data[1] + sizeof(ucx_destructor));
    *pooladdr = 5;
    
    UCX_TEST_ASSERT(*test == 5, "wrong pointer");
    
    // overflow test
    void *n0 = ucx_mempool_malloc(pool, (size_t)-1);
    void *n1 = ucx_mempool_malloc(pool, ((size_t)-1) - sizeof(void*)/2);
    
    UCX_TEST_ASSERT(n0 == NULL, "should not allocate SIZE_MAX bytes");
    UCX_TEST_ASSERT(n1 == NULL, "should detect integer overflow");
    
    UCX_TEST_END
    ucx_mempool_destroy(pool);
}

UCX_TEST(test_ucx_mempool_calloc) {
    
    UcxMempool *pool = ucx_mempool_new(1);
    UCX_TEST_BEGIN
    
    intptr_t *test = (intptr_t*) ucx_mempool_calloc(pool, 2, sizeof(intptr_t));
    
    UCX_TEST_ASSERT(test != NULL, "no memory for test data");
    UCX_TEST_ASSERT(test[0] == 0 && test[1] == 0, "failed");
    
    // overflow test
    void *n0 = ucx_mempool_calloc(pool, (size_t)-1, 1);
    void *n1 = ucx_mempool_calloc(pool, ((size_t)-1)/2, 3);
    
    UCX_TEST_ASSERT(n0 == NULL, "should not allocate SIZE_MAX bytes");
    UCX_TEST_ASSERT(n1 == NULL, "should detect integer overflow");
    
    UCX_TEST_END
    ucx_mempool_destroy(pool);
}

UCX_TEST(test_ucx_mempool_free) {
    UcxMempool *pool = ucx_mempool_new(16);
    void *mem1;
    void *mem2;
    
    UCX_TEST_BEGIN
    
    mem1 = ucx_mempool_malloc(pool, 16);
    ucx_mempool_free(pool, mem1);
    
    UCX_TEST_ASSERT(pool->ndata == 0, "mempool not empty");
    
    ucx_mempool_malloc(pool, 16);
    ucx_mempool_malloc(pool, 16);
    mem1 = ucx_mempool_malloc(pool, 16);
    ucx_mempool_malloc(pool, 16);
    mem2 = ucx_mempool_malloc(pool, 16);
    
    ucx_mempool_free(pool, mem1);
    
    UCX_TEST_ASSERT(pool->ndata == 4, "wrong mempool size");
    
    ucx_mempool_free(pool, mem2);
    
    UCX_TEST_ASSERT(pool->ndata == 3, "wrong mempool size");
    
    UCX_TEST_END
    ucx_mempool_destroy(pool);
}

#ifdef __cplusplus
extern "C"
#endif
void test_setdestr(void* elem) {
    intptr_t *cb = (intptr_t*) ((intptr_t*) elem)[1];
    *cb = 42;
}

UCX_TEST(test_ucx_mempool_set_destr) {
    
    intptr_t *cb = (intptr_t*) malloc(sizeof(intptr_t));
    UCX_TEST_BEGIN
    UcxMempool *pool = ucx_mempool_new(2);
    
    ucx_mempool_malloc(pool, sizeof(intptr_t));
    intptr_t *test = (intptr_t*) ucx_mempool_calloc(pool, 2, sizeof(intptr_t));
    
    UCX_TEST_ASSERT(cb != NULL && test != NULL, "no memory for test data");
    
    test[0] = 5; test[1] = (intptr_t) cb;
    *cb = 13;
    
    ucx_mempool_set_destr(test, test_setdestr);
    UCX_TEST_ASSERT(
            *(ucx_destructor*)(pool->data[1]) == test_setdestr, "failed")
    UCX_TEST_ASSERT(
            test[0] == 5 && test[1] == (intptr_t) cb, "setdestr destroyed data")
    
    ucx_mempool_destroy(pool);
    
    UCX_TEST_ASSERT(*cb == 42, "destructor not called");
    
    UCX_TEST_END
    if (cb != NULL) free(cb);
}


UCX_TEST(test_ucx_mempool_reg_destr) {
    
    intptr_t *test = (intptr_t*) calloc(2, sizeof(intptr_t));
    intptr_t *cb = (intptr_t*) malloc(sizeof(intptr_t));
    UCX_TEST_BEGIN
    UcxMempool *pool = ucx_mempool_new(1);
    
    UCX_TEST_ASSERT(cb != NULL && test != NULL, "no memory for test data");
    
    test[0] = 5; test[1] = (intptr_t) cb;
    *cb = 13;
    
    ucx_mempool_reg_destr(pool, test, test_setdestr);
    
    ucx_destructor *pooladdr = (ucx_destructor*)
            ((char*)pool->data[0] + sizeof(ucx_destructor));
    
    UCX_TEST_ASSERT(*pooladdr == test_setdestr, "failed");
    
    ucx_mempool_destroy(pool);
    UCX_TEST_ASSERT(*cb == 42, "destructor not called");
    UCX_TEST_END

    if (test != NULL) free(test);
    if (cb != NULL) free(cb);
}

UCX_TEST(test_ucx_mempool_realloc) {

    intptr_t *cb = (intptr_t*) malloc(sizeof(intptr_t));
    UCX_TEST_BEGIN
    UcxMempool *pool = ucx_mempool_new(2);
    
    ucx_mempool_malloc(pool, sizeof(intptr_t));
    intptr_t *test = (intptr_t*) ucx_mempool_calloc(pool, 2, sizeof(intptr_t));

    UCX_TEST_ASSERT(cb != NULL && test != NULL, "no memory for test data");
    
    test[0] = 5; test[1] = (intptr_t) cb;
    *cb = 13;
    
    ucx_mempool_set_destr(test, test_setdestr);
    
    intptr_t *rtest, n = 2;
    do {
        n *= 2;
        UCX_TEST_ASSERT(n < 65536, "test corrupt - no movement for realloc");
        rtest = (intptr_t*) ucx_mempool_realloc(pool, test, n*sizeof(intptr_t));
    } while (rtest == test);
    test = rtest;
    
    UCX_TEST_ASSERT(*(ucx_destructor*)(pool->data[1]) == test_setdestr,
            "realloc killed destructor")
    UCX_TEST_ASSERT(
            test[0] == 5 && test[1] == (intptr_t) cb, "realloc destroyed data")
    
    ucx_mempool_destroy(pool);
    
    UCX_TEST_ASSERT(*cb == 42, "destructor not called");
    
    UCX_TEST_END
    if (cb != NULL) free(cb);
}