/*
 set_altcap.c - Probes set.h with a non-default DLIBC_SET_INITIAL_CAPACITY.

 The macro is read at include time, so exercising it needs a translation unit of
 its own. Every function in set.h is static inline, so this TU gets its own
 copies built around the smaller constant while the set_t layout stays identical
 to the one in test_set.c. That means a set created here is a perfectly ordinary
 set to the rest of the program.

 @attention This TU deliberately does not include dtest.h. The harness counters
 are file-scope statics, so an assertion made here would be tallied separately
 and never reach the summary. The probes below only gather observations, and
 test_set.c does the asserting.
*/

#define DLIBC_SET_INITIAL_CAPACITY 1
#include "../set.h"

/*
 @brief Records the set's capacity after each of count successive insert() calls of distinct values, starting from a freshly created set.
 @param out A buffer of at least count size_t values, filled with the capacity observed after each insert.
 @param count The number of inserts to perform.
 @return 0 on success, -1 if out is NULL, count is 0, or any insert fails.
 @attention With DLIBC_SET_INITIAL_CAPACITY at 1, the expected sequence is 1, 2, 4, 4, 8, 8, 8, 8, ...
*/
int set_altcap_growth_sequence(size_t* out, size_t count) {
    if (!out || count == 0) {
        return -1;
    }

    set_t* set = set_create(sizeof(int));
    if (!set) {
        return -1;
    }

    for (size_t i = 0; i < count; ++i) {
        int value = (int)i;
        if (set_insert(set, &value) != 0) {
            set_destroy(&set);
            return -1;
        }

        out[i] = set_capacity(set);
    }

    set_destroy(&set);
    return 0;
}

/*
 @brief Reports the capacity of a freshly created set in this translation unit.
 @return The initial capacity, or 0 if creation failed.
*/
size_t set_altcap_initial_capacity(void) {
    set_t* set = set_create(sizeof(int));
    if (!set) {
        return 0;
    }

    size_t capacity = set_capacity(set);
    set_destroy(&set);
    return capacity;
}