diff options
Diffstat (limited to 'test/fan.c')
| -rw-r--r-- | test/fan.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/test/fan.c b/test/fan.c new file mode 100644 index 0000000000..9a0fa0d225 --- /dev/null +++ b/test/fan.c @@ -0,0 +1,108 @@ +/* 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 thermal engine. + */ + +#include "common.h" +#include "console.h" +#include "fan.h" +#include "hooks.h" +#include "host_command.h" +#include "printf.h" +#include "temp_sensor.h" +#include "test_util.h" +#include "thermal.h" +#include "timer.h" +#include "util.h" + + +/*****************************************************************************/ +/* Tests */ + +static int test_fan(void) +{ + /* "actual" fan speed from board/host/fan.c */ + extern int mock_rpm; + + sleep(2); + + /* With nothing else to do, fans default to full-on */ + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_max); + + /* + * fan_set_percent_needed() is normally called once a second by the + * thermal task, but we're not using a thermal test in this test so + * we can dink around with the fans without having to wait. The host + * implementation just sets mock_rpm to whatever it's asked for. + */ + + /* Off */ + fan_set_percent_needed(0, 0); + TEST_ASSERT(fan_get_rpm_actual(0) == 0); + fan_set_percent_needed(0, 0); + TEST_ASSERT(fan_get_rpm_actual(0) == 0); + + /* On, but just barely */ + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_start); + /* fan is above min speed now, so should be set to min */ + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_min); + + /* Full speed */ + fan_set_percent_needed(0, 100); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_max); + fan_set_percent_needed(0, 100); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_max); + + /* Slow again */ + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_min); + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_min); + + /* Off */ + fan_set_percent_needed(0, 0); + TEST_ASSERT(fan_get_rpm_actual(0) == 0); + fan_set_percent_needed(0, 0); + TEST_ASSERT(fan_get_rpm_actual(0) == 0); + + /* On, but just barely */ + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_start); + /* Force the mock_rpm to be slow, to simulate dragging */ + mock_rpm = fans[0].rpm_min - 105; + /* It should keep trying for the start speed */ + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_start); + /* But we have to keep forcing the mock_rpm back down */ + mock_rpm = fans[0].rpm_min - 105; + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_start); + /* Now let it turn just under rpm_min. Should be okay there. */ + mock_rpm = fans[0].rpm_min - 10; + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_min); + /* Let it go a little faster, still okay */ + mock_rpm = fans[0].rpm_min + 10; + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_min); + /* But if it drops too low, it should go back to the start speed */ + mock_rpm = fans[0].rpm_min - 105; + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_start); + /* And then relax */ + fan_set_percent_needed(0, 1); + TEST_ASSERT(fan_get_rpm_actual(0) == fans[0].rpm_min); + + return EC_SUCCESS; +} + +void run_test(void) +{ + RUN_TEST(test_fan); + + test_print_result(); +} |