Function test_rdev_chain

tests/commonlib/region-test.c:231–279

}

static void test_rdev_chain(void **state)
{
	struct region_device child;
	const size_t child_offs = VAL(2);
	const size_t child_size = VAL(4);
	const size_t offs = VAL(1);
	const size_t ovrflw_size = child_size - offs + 1;

	/* The mock_size test is the only one that will go through to underlying rdev_ops. */
	expect_value(mock_mmap, offset, child_offs + offs);
	expect_value(mock_readat, offset, child_offs + offs);
	expect_value(mock_writeat, offset, child_offs + offs);
	expect_value(mock_eraseat, offset, child_offs + offs);

	rdev_mock_defaults();

	/* First a quick test for rdev_chain_full(). */
	assert_int_equal(rdev_chain_full(&child, &mock_rdev), 0);
	assert_int_equal(region_device_sz(&child), region_device_sz(&mock_rdev));
	assert_int_equal(region_device_offset(&child), region_device_offset(&mock_rdev));
	assert_int_equal(rdev_relative_offset(&mock_rdev, &child), 0);

	/* Remaining tests use rdev chained to [child_offs:child_size) subregion. */
	assert_int_equal(rdev_chain(&child, &mock_rdev, child_offs, child_size), 0);
	assert_int_equal(region_device_sz(&child), child_size);
	assert_int_equal(region_device_offset(&child), child_offs);
	assert_int_equal(region_device_last(&child), child_offs + child_size - 1);
	assert_int_equal(rdev_relative_offset(&mock_rdev, &child), child_offs);
	assert_int_equal(rdev_relative_offset(&child, &mock_rdev), -1);

	/* offs + mock_size < child_size, so will succeed. */
	assert_ptr_equal(rdev_mmap(&child, offs, mock_size), mmap_result);
	assert_int_equal(rdev_munmap(&child, mmap_result), 0);
	assert_int_equal(rdev_readat(&child, mock_buffer, offs, mock_size), mock_size);
	assert_int_equal(rdev_writeat(&child, mock_buffer, offs, mock_size), mock_size);
	assert_int_equal(rdev_eraseat(&child, offs, mock_size), mock_size);

	/* offs + ovrflw_size > child_size, so will fail. */
	assert_null(rdev_mmap(&child, offs, ovrflw_size));
	assert_int_equal(rdev_readat(&child, mock_buffer, offs, ovrflw_size), -1);
	assert_int_equal(rdev_writeat(&child, mock_buffer, offs, ovrflw_size), -1);
	assert_int_equal(rdev_eraseat(&child, offs, ovrflw_size), -1);

	/* Using child_size as offset, the start of the area will already be out of range. */
	assert_null(rdev_mmap(&child, child_size, mock_size));
	assert_int_equal(rdev_readat(&child, mock_buffer, child_size, mock_size), -1);
	assert_int_equal(rdev_writeat(&child, mock_buffer, child_size, mock_size), -1);
	assert_int_equal(rdev_eraseat(&child, child_size, mock_size), -1);
}

static void test_rdev_double_chain(void **state)
{