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#include "test.h"
#include <string.h>
static int test_optimistic_case_call_counter = 0;
DEFINE_MAP_PAGES_IMPL(optimistic_case) {
++test_optimistic_case_call_counter;
if (test_optimistic_case_call_counter == 1) {
assert(location == PAGE_FIXED);
} else if (test_optimistic_case_call_counter == 2) {
assert(location == PAGE_ANYWHERE);
} else {
assert(false);
}
return platform_map_pages(addr, length, location);
}
// test with real HEAP_START and successful mmap MAP_FIXED
DEFINE_TEST(optimistic_case) {
USE_MAP_PAGES_IMPL(optimistic_case);
const struct region region = alloc_region(HEAP_START, 0);
assert(region.addr == HEAP_START);
assert(region.size == REGION_MIN_SIZE);
assert(region.extends);
assert(test_optimistic_case_call_counter == 1);
struct block_header * block = region.addr;
assert(block->next == NULL);
assert(block->capacity.bytes == REGION_MIN_SIZE - offsetof(struct block_header, contents));
assert(block->is_free);
memset(block->contents, 42, block->capacity.bytes);
unmap_pages(region.addr, region.size);
}
static int test_map_fixed_failed_mmap_counter = 0;
DEFINE_MAP_PAGES_IMPL(map_fixed_failed) {
++test_map_fixed_failed_mmap_counter;
if (test_map_fixed_failed_mmap_counter == 1) {
return MAP_PAGES_FAILURE;
}
return platform_map_pages(NULL, length, location);
}
// test with real HEAP_START and failing mmap MAP_FIXED
DEFINE_TEST(map_fixed_failed) {
USE_MAP_PAGES_IMPL(map_fixed_failed);
const struct region region = alloc_region(HEAP_START, 0);
assert(region.addr != HEAP_START);
assert(region.size == REGION_MIN_SIZE);
assert(!region.extends);
assert(test_map_fixed_failed_mmap_counter == 2);
struct block_header * block = region.addr;
assert(block->next == NULL);
assert(block->capacity.bytes == REGION_MIN_SIZE - offsetof(struct block_header, contents));
assert(block->is_free);
memset(block->contents, 42, block->capacity.bytes);
unmap_pages(region.addr, region.size);
}
static int test_pessimistic_case_mmap_counter = 0;
DEFINE_MAP_PAGES_IMPL(pessimistic_case) {
++test_pessimistic_case_mmap_counter;
return MAP_PAGES_FAILURE;
}
// test with real HEAP_START and failing mmap MAP_FIXED
DEFINE_TEST(pessimistic_case) {
USE_MAP_PAGES_IMPL(pessimistic_case);
const struct region region = alloc_region(HEAP_START, 0);
assert(region.addr == NULL);
assert(test_pessimistic_case_mmap_counter == 2);
}
DEFINE_MAP_PAGES_IMPL(query_is_small) {
assert(length == REGION_MIN_SIZE);
return MAP_PAGES_FAILURE;
}
// test with query = 0
DEFINE_TEST(query_is_zero) {
USE_MAP_PAGES_IMPL(query_is_small);
alloc_region(HEAP_START, 0);
}
// test with query > 0 and query < REGION_MIN_SIZE
DEFINE_TEST(query_is_small) {
USE_MAP_PAGES_IMPL(query_is_small);
alloc_region(HEAP_START, 42);
}
DEFINE_MAP_PAGES_IMPL(query_is_min_region_size) {
assert(length == (size_t) (REGION_MIN_SIZE + page_size()));
return platform_map_pages(addr, length, location);
}
// test with query == REGION_MIN_SIZE (to check is block header size counted in mmap length)
DEFINE_TEST(query_is_min_region_size) {
USE_MAP_PAGES_IMPL(query_is_min_region_size);
const struct region region = alloc_region(HEAP_START, REGION_MIN_SIZE);
assert(region.addr == HEAP_START);
assert(region.size == (size_t) (REGION_MIN_SIZE + page_size()));
assert(region.extends);
struct block_header * block = region.addr;
assert(block->next == NULL);
assert(block->capacity.bytes == region.size - offsetof(struct block_header, contents));
assert(block->is_free);
memset(block->contents, 42, block->capacity.bytes);
unmap_pages(region.addr, region.size);
}
DEFINE_TEST_GROUP(query) {
TEST_IN_GROUP(query_is_zero),
TEST_IN_GROUP(query_is_small),
TEST_IN_GROUP(query_is_min_region_size),
};
int main() {
RUN_SINGLE_TEST(optimistic_case);
RUN_SINGLE_TEST(map_fixed_failed);
RUN_SINGLE_TEST(pessimistic_case);
RUN_TEST_GROUP(query);
return 0;
}