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/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Test the logic of battery_get_params() to be sure it sets the correct flags
* when i2c reads fail.
*/
#include "battery.h"
#include "battery_smart.h"
#include "common.h"
#include "console.h"
#include "i2c.h"
#include "test_util.h"
#include "util.h"
/* Test state */
static int fail_on_first, fail_on_last;
static int read_count, write_count;
struct batt_params batt;
void battery_compensate_params(struct batt_params *batt)
{
}
void board_battery_compensate_params(struct batt_params *batt)
{
}
static void reset_and_fail_on(int first, int last)
{
/* We're not initializing the fake battery, so everything reads zero */
memset(&batt, 0, sizeof(typeof(batt)));
read_count = write_count = 0;
fail_on_first = first;
fail_on_last = last;
}
/* Mocked functions */
int sb_read(int cmd, int *param)
{
read_count++;
if (read_count >= fail_on_first && read_count <= fail_on_last)
return EC_ERROR_UNKNOWN;
return i2c_read16(I2C_PORT_BATTERY, BATTERY_ADDR_FLAGS,
cmd, param);
}
int sb_write(int cmd, int param)
{
write_count++;
return i2c_write16(I2C_PORT_BATTERY, BATTERY_ADDR_FLAGS,
cmd, param);
}
/* Tests */
static int test_param_failures(void)
{
int i, num_reads;
/* No failures */
reset_and_fail_on(0, 0);
battery_get_params(&batt);
TEST_ASSERT(batt.flags & BATT_FLAG_RESPONSIVE);
TEST_ASSERT(!(batt.flags & BATT_FLAG_BAD_ANY));
num_reads = read_count;
/* Just a single failure */
for (i = 1; i <= num_reads; i++) {
reset_and_fail_on(i, i);
battery_get_params(&batt);
TEST_ASSERT(batt.flags & BATT_FLAG_BAD_ANY);
TEST_ASSERT(batt.flags & BATT_FLAG_RESPONSIVE);
}
/* Once it fails, it keeps failing */
for (i = 1; i <= num_reads; i++) {
reset_and_fail_on(i, num_reads);
battery_get_params(&batt);
TEST_ASSERT(batt.flags & BATT_FLAG_BAD_ANY);
if (i == 1)
/* If every read fails, it's not responsive */
TEST_ASSERT(!(batt.flags & BATT_FLAG_RESPONSIVE));
else
TEST_ASSERT(batt.flags & BATT_FLAG_RESPONSIVE);
}
return EC_SUCCESS;
}
void run_test(void)
{
RUN_TEST(test_param_failures);
test_print_result();
}
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