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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2019 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 "array_tests.h"
#include <ucx/utils.h>

UCX_TEST(test_ucx_array_free) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    UCX_TEST_BEGIN
    ucx_array_free(&array);
    UCX_TEST_ASSERT(array.data == NULL, "data pointer not NULL after free");
    UCX_TEST_ASSERT(array.size == 0, "size not zero after free");
    UCX_TEST_ASSERT(array.capacity == 0, "capacity not zero after free");
    UCX_TEST_ASSERT(array.allocator == ucx_default_allocator(),
            "allocator corrupted during free");
    UCX_TEST_END
}

UCX_TEST(test_ucx_array_new) {
    UcxArray array = ucx_array_new(16, 47);
    
    UCX_TEST_BEGIN
    UCX_TEST_ASSERT(array.data, "no memory allocated");
    UCX_TEST_ASSERT(array.size == 0, "size not initially zero");
    UCX_TEST_ASSERT(array.capacity == 16, "capacity not as requested");
    UCX_TEST_ASSERT(array.elemsize == 47, "element size not as requested");
    UCX_TEST_ASSERT(array.allocator == ucx_default_allocator(),
            "array not using the default allocator");
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_append) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    int x = 42;
    ucx_array_append(&array, &x);
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 42, "failed");
    
    x = 13;
    ucx_array_append(&array, &x);
    
    UCX_TEST_ASSERT(array.size == 2, "incorrect size after append");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 1) == 13, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 42,
            "append corrupted previously inserted data");
    
    ucx_array_append(&array, NULL);
    
    UCX_TEST_ASSERT(array.size == 3, "incorrect size after NULL append");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 2) == 0, "element is not zeroed");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 42,
            "NULL append corrupted previously inserted data");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 1) == 13,
            "NULL append corrupted previously inserted data");
    
    UCX_TEST_END
    
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_prepend) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    int x = 42;
    ucx_array_prepend(&array, &x);
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 42, "failed");
    
    x = 13;
    ucx_array_prepend(&array, &x);
    
    UCX_TEST_ASSERT(array.size == 2, "incorrect size after prepend");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 13, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 1) == 42,
            "prepend corrupted previously inserted data");
    
    ucx_array_prepend(&array, NULL);
    
    UCX_TEST_ASSERT(array.size == 3, "incorrect size after NULL prepend");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 0, "element is not zeroed");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 1) == 13,
            "NULL prepend corrupted previously inserted data");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 2) == 42,
            "NULL prepend corrupted previously inserted data");
    
    UCX_TEST_END
    
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_set) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    int x = 42;

    UCX_TEST_BEGIN

    ucx_array_set(&array, 7, &x);
    UCX_TEST_ASSERT(ucx_array_at_int(array, 7) == 42, "failed");
    UCX_TEST_ASSERT(array.size >= 8, "array not resized on set");
    UCX_TEST_ASSERT(array.capacity == 16, "capacity changed unnecessarily");
    
    x = 13;
    ucx_array_set(&array, 27, &x);
    
    UCX_TEST_ASSERT(ucx_array_at_int(array, 27) == 13, "failed");
    UCX_TEST_ASSERT(array.size == 28, "array not resized on set");
    UCX_TEST_ASSERT(array.capacity == 28, "capacity not grown");
    
    ucx_array_set(&array, 7, NULL);
    
    UCX_TEST_ASSERT(ucx_array_at_int(array, 7) == 0, "not zeroed on NULL set");
    
    UCX_TEST_END
    
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_equals) {
    UcxArray a1 = ucx_array_new(16, sizeof(int));
    UcxArray a2 = ucx_array_new(16, sizeof(int));
    UcxArray a3 = ucx_array_new(16, sizeof(long int));
    UcxArray a4 = ucx_array_new(16, sizeof(int));
    
    a1.size = 5;
    ucx_array_at_int(a1, 0) = 47;
    ucx_array_at_int(a1, 1) = 11;
    ucx_array_at_int(a1, 2) = 0;
    ucx_array_at_int(a1, 3) = 8;
    ucx_array_at_int(a1, 4) = 15;
    a2.size = 5;
    ucx_array_at_int(a2, 0) = 47;
    ucx_array_at_int(a2, 1) = 11;
    ucx_array_at_int(a2, 2) = 0;
    ucx_array_at_int(a2, 3) = 8;
    ucx_array_at_int(a2, 4) = 15;
    a3.size = 5;
    ucx_array_at_longint(a3, 0) = 47;
    ucx_array_at_longint(a3, 1) = 11;
    ucx_array_at_longint(a3, 2) = 0;
    ucx_array_at_longint(a3, 3) = 8;
    ucx_array_at_longint(a3, 4) = 15;
    a4.size = 5;
    ucx_array_at_int(a4, 0) = 47;
    ucx_array_at_int(a4, 1) = 11;
    ucx_array_at_int(a4, 2) = -6;
    ucx_array_at_int(a4, 3) = 8;
    ucx_array_at_int(a4, 4) = 15;
    
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(ucx_array_equals(a1, a2, ucx_cmp_int, NULL), "failed");
    UCX_TEST_ASSERT(!ucx_array_equals(a1, a4, ucx_cmp_int, NULL), "failed");
    UCX_TEST_ASSERT(!ucx_array_equals(a4, a1, ucx_cmp_int, NULL), "failed");
    UCX_TEST_ASSERT(!ucx_array_equals(a1, a3, ucx_cmp_int, NULL),
            "comparing arrays of different element size shall fail");
    UCX_TEST_ASSERT(!ucx_array_equals(a3, a1, ucx_cmp_int, NULL),
            "comparing arrays of different element size shall fail");
    
    UCX_TEST_ASSERT(ucx_array_equals(a1, a2, NULL, NULL),
            "compare using memcmp() failed");
    UCX_TEST_ASSERT(!ucx_array_equals(a1, a4, NULL, NULL),
            "compare using memcmp() failed");
    
    UCX_TEST_END
    ucx_array_free(&a1);
    ucx_array_free(&a2);
    ucx_array_free(&a3);
    ucx_array_free(&a4);
}

UCX_TEST(test_ucx_array_concat) {
    UcxArray a1 = ucx_array_new(16, sizeof(int));
    UcxArray a2 = ucx_array_new(16, sizeof(int));
    
    a1.size = 2;
    ucx_array_at_int(a1, 0) = 47;
    ucx_array_at_int(a1, 1) = 11;
    a2.size = 3;
    ucx_array_at_int(a2, 0) = 0;
    ucx_array_at_int(a2, 1) = 8;
    ucx_array_at_int(a2, 2) = 15;
    
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(!ucx_array_concat(&a1, &a2), "failed");
    UCX_TEST_ASSERT(a1.size == 5, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(a1, 0) == 47, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(a1, 1) == 11, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(a1, 2) == 0, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(a1, 3) == 8, "failed");
    UCX_TEST_ASSERT(ucx_array_at_int(a1, 4) == 15, "failed");
    
    a1.elemsize *= 2;
    UCX_TEST_ASSERT(ucx_array_concat(&a1, &a2),
            "arrays of different element size must not be concatenated");
    UCX_TEST_ASSERT(a1.size == 5,
            "arrays of different element size must not be concatenated");
    
    UCX_TEST_END
    ucx_array_free(&a1);
    ucx_array_free(&a2);    
}

UCX_TEST(test_ucx_array_at) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    int x = 42;
    ucx_array_append(&array, &x);
    x = 13;
    ucx_array_append(&array, &x);
    x = 5;
    ucx_array_append(&array, &x);
    
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(ucx_array_at_int(array, 1) == 13, "failed");
    ucx_array_at_int(array, 1) = 80;
    UCX_TEST_ASSERT(ucx_array_at_int(array, 1) == 80, "assignment failed");
    
    
    UCX_TEST_ASSERT(ucx_array_at_int(array, 0) == 42, "corrupted data");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 2) == 5, "corrupted data");
    
    UCX_TEST_END
    
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_find) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    array.size = 5;
    ucx_array_at_int(array, 0) = 47;
    ucx_array_at_int(array, 1) = 11;
    ucx_array_at_int(array, 2) = 0;
    ucx_array_at_int(array, 3) = 8;
    ucx_array_at_int(array, 4) = 15;
    
    int x = 8;
    int y = 90;
    
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(ucx_array_find(array,(void*)&x,ucx_cmp_int,NULL) == 3,
        "doesn't find element");
    UCX_TEST_ASSERT(ucx_array_find(array,(void*)&y,ucx_cmp_int,NULL) == 5,
        "finds non-existing element");
    
    UCX_TEST_ASSERT(ucx_array_find(array,(void*)&x,NULL,NULL) == 3,
        "failed using memcmp()");
    UCX_TEST_ASSERT(ucx_array_find(array,(void*)&y,NULL,NULL) == 5,
        "failed using memcmp()");
    
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_contains) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    array.size = 5;
    ucx_array_at_int(array, 0) = 47;
    ucx_array_at_int(array, 1) = 11;
    ucx_array_at_int(array, 2) = 0;
    ucx_array_at_int(array, 3) = 8;
    ucx_array_at_int(array, 4) = 15;
    
    int x = 8;
    int y = 90;
    
    UCX_TEST_BEGIN
    
    UCX_TEST_ASSERT(ucx_array_contains(array,(void*)&x,ucx_cmp_int,NULL),
        "false negative");
    UCX_TEST_ASSERT(!ucx_array_contains(array,(void*)&y,ucx_cmp_int,NULL),
        "false positive");
    
    UCX_TEST_ASSERT(ucx_array_contains(array,(void*)&x,NULL,NULL),
        "false negative using memcmp()");
    UCX_TEST_ASSERT(!ucx_array_contains(array,(void*)&y,NULL,NULL),
        "false positive using memcmp()");
    
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_remove) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    array.size = 5;
    ucx_array_at_int(array, 0) = 47;
    ucx_array_at_int(array, 1) = 11;
    ucx_array_at_int(array, 2) = 0;
    ucx_array_at_int(array, 3) = 8;
    ucx_array_at_int(array, 4) = 15;
        
    UCX_TEST_BEGIN
    
    ucx_array_remove(&array, 2);
    UCX_TEST_ASSERT(
            ucx_array_at_int(array, 0) == 47 &&
            ucx_array_at_int(array, 1) == 11 &&
            ucx_array_at_int(array, 2) == 8 &&
            ucx_array_at_int(array, 3) == 15,
            "wrong contents after remove");
    UCX_TEST_ASSERT(array.size == 4, "wrong size after remove");
    
    ucx_array_remove_fast(&array, 1);
    UCX_TEST_ASSERT(
            ucx_array_at_int(array, 0) == 47 &&
            ucx_array_at_int(array, 1) == 15 &&
            ucx_array_at_int(array, 2) == 8,
            "wrong contents after fast remove");
    UCX_TEST_ASSERT(array.size == 3, "wrong size after fast remove");
    
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_clone) {
   
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    array.size = 5;
    ucx_array_at_int(array, 0) = 47;
    ucx_array_at_int(array, 1) = 11;
    ucx_array_at_int(array, 2) = 0;
    ucx_array_at_int(array, 3) = 8;
    ucx_array_at_int(array, 4) = 15;
    
    UcxArray copy = ucx_array_clone(array);
    UCX_TEST_BEGIN

    UCX_TEST_ASSERT(array.data != copy.data, "no true copy");
    UCX_TEST_ASSERT(array.size == copy.size, "size mismatch");
    UCX_TEST_ASSERT(array.capacity == copy.capacity, "capacity mismatch");
    UCX_TEST_ASSERT(array.elemsize == copy.elemsize, "element size mismatch");
    UCX_TEST_ASSERT(array.allocator == copy.allocator, "allocator mismatch");
    UCX_TEST_ASSERT(ucx_array_equals(array, copy, ucx_cmp_int, NULL), "failed");
    
    UCX_TEST_END

    ucx_array_free(&array);
    ucx_array_free(&copy);
}

UCX_TEST(test_ucx_array_sort) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    array.size = 5;
    ucx_array_at_int(array, 0) = 47;
    ucx_array_at_int(array, 1) = 11;
    ucx_array_at_int(array, 2) = 0;
    ucx_array_at_int(array, 3) = 8;
    ucx_array_at_int(array, 4) = 15;
    
    UcxArray expected = ucx_array_new(16, sizeof(int));
    expected.size = 5;
    ucx_array_at_int(expected, 0) = 0;
    ucx_array_at_int(expected, 1) = 8;
    ucx_array_at_int(expected, 2) = 11;
    ucx_array_at_int(expected, 3) = 15;
    ucx_array_at_int(expected, 4) = 47;
    

    UCX_TEST_BEGIN
    void* original_ptr = array.data;
    ucx_array_sort(array, ucx_cmp_int, NULL);
    UCX_TEST_ASSERT(ucx_array_equals(array, expected, NULL, NULL), "failed");
    UCX_TEST_ASSERT(array.size == 5, "size corrupted");
    UCX_TEST_ASSERT(array.data == original_ptr, "shall not reallocate");
                
    ucx_array_reserve(&array, 32);
    ucx_array_reserve(&expected, 32);
    array.size = expected.size = 32;
    for (size_t i = 0 ; i < 32 ; i++) {
        ucx_array_at_int(array, i) = ((i%2==0)?-1:1) * ((int) i);
        ucx_array_at_int(expected, i) = (-30+2*i) - (i > 15 ? 1 : 0);
    }
    
    ucx_array_sort(array, ucx_cmp_int, NULL);
    UCX_TEST_ASSERT(ucx_array_equals(array, expected, NULL, NULL),
            "failed for bigger arrays");
    UCX_TEST_END

    ucx_array_free(&expected);
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_autogrow) {
    UcxArray array = ucx_array_new(4, sizeof(int));
    array.size = 3;
    ucx_array_at_int(array, 0) = 47;
    ucx_array_at_int(array, 1) = 11;
    int x = 5;
    
    UCX_TEST_BEGIN

    void* oldptr = array.data;
    
    ucx_array_append(&array, &x);
    UCX_TEST_ASSERT(array.capacity == 4 && array.data == oldptr,
            "array should not grow too early");
    ucx_array_append(&array, &x);
    UCX_TEST_ASSERT(array.capacity == 8, "array did not grow");
    UCX_TEST_ASSERT(array.size == 5, "incorrect size after grow");
    UCX_TEST_ASSERT(ucx_array_at_int(array, 3) == 5 &&
        ucx_array_at_int(array, 3) == 5, "corrupt data");
    
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_shrink) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    array.size = 4;
    
    UCX_TEST_BEGIN
    UCX_TEST_ASSERT(!ucx_array_shrink(&array), "failed");
    UCX_TEST_ASSERT(array.capacity == 4, "incorrect capacity after shrink");
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_resize) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    array.size = 8;
    
    UCX_TEST_BEGIN

    UCX_TEST_ASSERT(!ucx_array_resize(&array, 32), "failed");
    UCX_TEST_ASSERT(array.capacity == 32, "incorrect capacity after resize");
    UCX_TEST_ASSERT(array.size == 8, "incorrect size after resize");
    
    UCX_TEST_ASSERT(!ucx_array_resize(&array, 4), "failed");
    UCX_TEST_ASSERT(array.capacity == 4, "incorrect capacity after resize");
    UCX_TEST_ASSERT(array.size == 4, "incorrect size after resize");
    
    UCX_TEST_END
    ucx_array_free(&array);
}

UCX_TEST(test_ucx_array_reserve) {
    UcxArray array = ucx_array_new(16, sizeof(int));
    
    UCX_TEST_BEGIN

    UCX_TEST_ASSERT(!ucx_array_reserve(&array, 4), "failed");
    UCX_TEST_ASSERT(array.capacity == 16, "reserve shall not shrink");
            
    UCX_TEST_ASSERT(!ucx_array_resize(&array, 32), "failed");
    UCX_TEST_ASSERT(array.capacity == 32, "incorrect capacity after reserve");    
    
    UCX_TEST_END
    ucx_array_free(&array);
}