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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <string.h>
#include <zephyr/fff.h>
#include <zephyr/kernel.h>
#include <zephyr/ztest.h>
#include <zephyr/ztest_assert.h>
#include "charger.h"
#include "test/drivers/charger_utils.h"
#include "test/drivers/test_state.h"
/* This test suite only works if the chg_chips array is not const. */
BUILD_ASSERT(IS_ENABLED(CONFIG_PLATFORM_EC_CHARGER_RUNTIME_CONFIG),
"chg_chips array cannot be const.");
/** Index of the charger chip we are overriding / working with. */
#define CHG_NUM (0)
/* FFF fakes for driver functions. These get assigned to members of the
* charger_drv struct
*/
FAKE_VALUE_FUNC(enum ec_error_list, enable_otg_power, int, int);
FAKE_VALUE_FUNC(enum ec_error_list, set_otg_current_voltage, int, int, int);
FAKE_VALUE_FUNC(int, is_sourcing_otg_power, int, int);
struct common_charger_mocked_driver_fixture {
/* The original driver pointer that gets restored after the tests */
const struct charger_drv *saved_driver_ptr;
/* Mock driver that gets substituted */
struct charger_drv mock_driver;
};
ZTEST(common_charger_mocked_driver, test_charger_enable_otg_power__invalid)
{
/* charger number out of bounds */
zassert_equal(EC_ERROR_INVAL, charger_enable_otg_power(-1, 0));
zassert_equal(EC_ERROR_INVAL, charger_enable_otg_power(INT_MAX, 0));
}
ZTEST(common_charger_mocked_driver, test_charger_enable_otg_power__unimpl)
{
/* enable_otg_power is NULL */
zassert_equal(EC_ERROR_UNIMPLEMENTED,
charger_enable_otg_power(CHG_NUM, 1));
}
ZTEST_F(common_charger_mocked_driver, test_charger_enable_otg_power)
{
fixture->mock_driver.enable_otg_power = enable_otg_power;
enable_otg_power_fake.return_val = 123;
zassert_equal(enable_otg_power_fake.return_val,
charger_enable_otg_power(CHG_NUM, 1));
zassert_equal(1, enable_otg_power_fake.call_count);
zassert_equal(CHG_NUM, enable_otg_power_fake.arg0_history[0]);
zassert_equal(1, enable_otg_power_fake.arg1_history[0]);
}
ZTEST(common_charger_mocked_driver,
test_charger_set_otg_current_voltage__invalid)
{
/* charger number out of bounds */
zassert_equal(EC_ERROR_INVAL,
charger_set_otg_current_voltage(-1, 0, 0));
zassert_equal(EC_ERROR_INVAL,
charger_set_otg_current_voltage(INT_MAX, 0, 0));
}
ZTEST(common_charger_mocked_driver,
test_charger_set_otg_current_voltage__unimpl)
{
/* set_otg_current_voltage is NULL */
zassert_equal(EC_ERROR_UNIMPLEMENTED,
charger_set_otg_current_voltage(CHG_NUM, 0, 0));
}
ZTEST_F(common_charger_mocked_driver, test_charger_set_otg_current_voltage)
{
fixture->mock_driver.set_otg_current_voltage = set_otg_current_voltage;
set_otg_current_voltage_fake.return_val = 123;
zassert_equal(set_otg_current_voltage_fake.return_val,
charger_set_otg_current_voltage(CHG_NUM, 10, 20));
zassert_equal(1, set_otg_current_voltage_fake.call_count);
zassert_equal(CHG_NUM, set_otg_current_voltage_fake.arg0_history[0]);
zassert_equal(10, set_otg_current_voltage_fake.arg1_history[0]);
zassert_equal(20, set_otg_current_voltage_fake.arg2_history[0]);
}
ZTEST(common_charger_mocked_driver, test_charger_is_sourcing_otg_power__invalid)
{
/* is_sourcing_otg_power is NULL */
zassert_equal(0, charger_is_sourcing_otg_power(0));
}
ZTEST_F(common_charger_mocked_driver, test_charger_is_sourcing_otg_power)
{
fixture->mock_driver.is_sourcing_otg_power = is_sourcing_otg_power;
is_sourcing_otg_power_fake.return_val = 123;
zassert_equal(is_sourcing_otg_power_fake.return_val,
charger_is_sourcing_otg_power(0));
zassert_equal(1, is_sourcing_otg_power_fake.call_count);
}
static void *setup(void)
{
static struct common_charger_mocked_driver_fixture f;
zassert_true(board_get_charger_chip_count() > 0,
"Need at least one charger chip present.");
/* Back up the current charger driver and substitute our own */
f.saved_driver_ptr = chg_chips[CHG_NUM].drv;
chg_chips[CHG_NUM].drv = &f.mock_driver;
return &f;
}
static void reset(void *data)
{
struct common_charger_mocked_driver_fixture *f = data;
/* Reset the mock driver's function pointer table. Each tests adds these
* as-needed
*/
f->mock_driver = (struct charger_drv){ 0 };
/* Reset fakes */
RESET_FAKE(enable_otg_power);
RESET_FAKE(set_otg_current_voltage);
RESET_FAKE(is_sourcing_otg_power);
}
static void teardown(void *data)
{
struct common_charger_mocked_driver_fixture *f = data;
/* Restore the original driver */
chg_chips[CHG_NUM].drv = f->saved_driver_ptr;
}
ZTEST_SUITE(common_charger_mocked_driver, drivers_predicate_post_main, setup,
reset, reset, teardown);
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