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// Written by retoor@molodetz.nl
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// The program tests the "arena" memory allocation functionality
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// by constructing, initializing, and performing operations such as
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// allocation and validation of memory pointers within a dynamic memory arena.
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// Includes non-standard libraries "arena.h" for arena memory management
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// and "rtest.h" for testing assertions and outcomes.
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// MIT License
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#include "arena.h"
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#include "rtest.h"
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#include <stdio.h>
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#include <string.h>
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int main() {
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rtest_banner("testing arena");
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arena_t *arena = arena_construct();
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rtest_banner("Initial values");
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rtest_assert(arena->memory == NULL);
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rtest_assert(arena->size == 0);
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rtest_assert(arena->pointer == 0);
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arena_free(arena);
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rtest_banner("New instance defaults");
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arena = arena_new(1024);
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rtest_assert(arena->memory != NULL);
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rtest_assert(arena->size == 1024);
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rtest_assert(arena->pointer == 0);
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arena_free(arena);
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rtest_banner("Allocate");
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arena = arena_new(1024);
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int *int_one = (int *)arena_alloc(arena, sizeof(int));
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*int_one = 10;
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rtest_assert(*int_one == 10);
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rtest_assert(arena->pointer == sizeof(int));
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int *int_two = (int *)arena_alloc(arena, sizeof(int));
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*int_two = 20;
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rtest_assert(*int_two == 20);
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rtest_assert(arena->pointer == sizeof(int) * 2);
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arena_free(arena);
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return rtest_end("");
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} |