Function test_region

tests/commonlib/region-test.c:11–42

#define VAL(v) ((size_t)(v##ULL << (sizeof(size_t) * 8 - 4)))

static void test_region(void **state)
{
	/* Self-test: make sure VAL() overflow works as intended. */
	assert_true(VAL(5) + VAL(10) > VAL(10));
	assert_true(VAL(7) + VAL(10) < VAL(10));

	struct region outer = {.offset = VAL(2), .size = VAL(4)};
	assert_int_equal(region_offset(&outer), VAL(2));
	assert_int_equal(region_sz(&outer), VAL(4));
	assert_int_equal(region_last(&outer), VAL(6) - 1);

	struct region inner = {.offset = VAL(3), .size = VAL(2)};
	assert_true(region_is_subregion(&outer, &inner));

	struct region touching_bottom = {.offset = VAL(2), .size = VAL(1)};
	assert_true(region_is_subregion(&outer, &touching_bottom));

	struct region touching_top = {.offset = VAL(5), .size = VAL(1)};
	assert_true(region_is_subregion(&outer, &touching_top));

	struct region overlap_bottom = {.offset = VAL(1), .size = VAL(2)};
	assert_false(region_is_subregion(&outer, &overlap_bottom));

	struct region overlap_top = {.offset = VAL(5), .size = VAL(2)};
	assert_false(region_is_subregion(&outer, &overlap_top));

	struct region below = {.offset = 0, .size = VAL(1)};
	assert_false(region_is_subregion(&outer, &below));

	struct region above = {.offset = VAL(0xf), .size = VAL(1)};
	assert_false(region_is_subregion(&outer, &above));
}

static void *mock_mmap(const struct region_device *rdev, size_t offset, size_t size)
{