Add test and remove code comments

test2.c

@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include "buddy.h"
+
+#define NUM_PAGES 16
+
+#define MIN_ALLOC_SIZE (1U << BUDDY_ALLOC_MIN_BLOCK_LOG2)
+#define PAGE_SIZE (1U << BUDDY_ALLOC_MAX_BLOCK_LOG2)
+#define POOL_SIZE (NUM_PAGES * PAGE_SIZE)
+#define MAX_ALLOCS (POOL_SIZE / MIN_ALLOC_SIZE)
+
+int main(void)
+{
+    _Alignas(PAGE_SIZE) char mem[POOL_SIZE];
+    struct page_info info[NUM_PAGES];
+    struct buddy_alloc alloc = buddy_startup(mem, POOL_SIZE, info, NUM_PAGES);
+
+    void *allocs[MAX_ALLOCS];
+
+    size_t performed = 0;
+    for (size_t i = 0; i < MAX_ALLOCS; i++) {
+        void *ptr = buddy_malloc(&alloc, MIN_ALLOC_SIZE);
+        if (ptr == NULL)
+            break;
+        
+        performed++;
+
+        allocs[i] = ptr;
+
+        *(size_t*) ptr = i;
+    }
+
+    if (performed == MAX_ALLOCS) {
+
+        for (size_t i = 0; i < MAX_ALLOCS; i++) {
+            if (*(size_t*) allocs[i] != i)
+                fprintf(stderr, "%p allocated twice!\n", allocs[i]);
+        }
+
+        for (size_t i = 0; i < MAX_ALLOCS; i++) {
+            buddy_free(&alloc, MIN_ALLOC_SIZE, allocs[MAX_ALLOCS-i-1]);
+        }
+
+        performed = 0;
+        for (size_t i = 0; i < MAX_ALLOCS; i++) {
+            void *ptr = buddy_malloc(&alloc, MIN_ALLOC_SIZE);
+            performed++;
+
+            allocs[i] = ptr;
+
+            *(size_t*) ptr = i + MAX_ALLOCS;
+        }
+
+        for (size_t i = 0; i < MAX_ALLOCS; i++) {
+            if (*(size_t*) allocs[i] != MAX_ALLOCS + i)
+                fprintf(stderr, "%p reallocation error!\n", allocs[i]);
+        }
+    }
+
+    fprintf(stderr, "performed=%lu, expected=%u\n", performed, MAX_ALLOCS);
+
+    buddy_cleanup(&alloc);
+    return 0;
+}