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hysteresis: we needed different hysteresis

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Sometimes, we only need a histeresis in one direction.
This commit is contained in:
Julian Oes
2016-07-30 12:26:56 +02:00
parent 401d807261
commit f365832c0b
3 changed files with 67 additions and 18 deletions
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unittests/hysteresis_test.cpp
+48 -9
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@@ -2,23 +2,23 @@
#include "gtest/gtest.h"
const static unsigned hysteresis_time_us = 5000;
TEST(HysteresisTest, InitFalse)
{
systemlib::Hysteresis hysteresis(hysteresis_time_us, false);
systemlib::Hysteresis hysteresis(false);
ASSERT_FALSE(hysteresis.get_state());
}
TEST(HysteresisTest, InitTrue)
{
systemlib::Hysteresis hysteresis(hysteresis_time_us, true);
systemlib::Hysteresis hysteresis(true);
ASSERT_TRUE(hysteresis.get_state());
}
TEST(HysteresisTest, ZeroCase)
{
systemlib::Hysteresis hysteresis(0, false);
// Default is 0 hysteresis.
systemlib::Hysteresis hysteresis(false);
ASSERT_FALSE(hysteresis.get_state());
// Change and see result immediately.
@@ -37,7 +37,36 @@ TEST(HysteresisTest, ZeroCase)
TEST(HysteresisTest, ChangeAfterTime)
{
systemlib::Hysteresis hysteresis(hysteresis_time_us, false);
systemlib::Hysteresis hysteresis(false);
hysteresis.set_hysteresis_time_from(false, 5000);
hysteresis.set_hysteresis_time_from(true, 3000);
// Change to true.
hysteresis.set_state_and_update(true);
ASSERT_FALSE(hysteresis.get_state());
usleep(4000);
hysteresis.update();
ASSERT_FALSE(hysteresis.get_state());
usleep(2000);
hysteresis.update();
ASSERT_TRUE(hysteresis.get_state());
// Change back to false.
hysteresis.set_state_and_update(false);
ASSERT_TRUE(hysteresis.get_state());
usleep(1000);
hysteresis.update();
ASSERT_TRUE(hysteresis.get_state());
usleep(3000);
hysteresis.update();
ASSERT_FALSE(hysteresis.get_state());
}
TEST(HysteresisTest, HysteresisChanged)
{
systemlib::Hysteresis hysteresis(false);
hysteresis.set_hysteresis_time_from(true, 2000);
hysteresis.set_hysteresis_time_from(false, 5000);
// Change to true.
hysteresis.set_state_and_update(true);
@@ -49,20 +78,25 @@ TEST(HysteresisTest, ChangeAfterTime)
hysteresis.update();
ASSERT_TRUE(hysteresis.get_state());
// Change hysteresis time.
hysteresis.set_hysteresis_time_from(true, 10000);
// Change back to false.
hysteresis.set_state_and_update(false);
ASSERT_TRUE(hysteresis.get_state());
usleep(3000);
usleep(7000);
hysteresis.update();
ASSERT_TRUE(hysteresis.get_state());
usleep(3000);
usleep(5000);
hysteresis.update();
ASSERT_FALSE(hysteresis.get_state());
}
TEST(HysteresisTest, ChangeAfterTimeMultipleSets)
{
systemlib::Hysteresis hysteresis(hysteresis_time_us, false);
systemlib::Hysteresis hysteresis(false);
hysteresis.set_hysteresis_time_from(true, 5000);
hysteresis.set_hysteresis_time_from(false, 5000);
// Change to true.
hysteresis.set_state_and_update(true);
@@ -87,7 +121,8 @@ TEST(HysteresisTest, ChangeAfterTimeMultipleSets)
TEST(HysteresisTest, TakeChangeBack)
{
systemlib::Hysteresis hysteresis(hysteresis_time_us, false);
systemlib::Hysteresis hysteresis(false);
hysteresis.set_hysteresis_time_from(false, 5000);
// Change to true.
hysteresis.set_state_and_update(true);
@@ -111,4 +146,8 @@ TEST(HysteresisTest, TakeChangeBack)
usleep(3000);
hysteresis.update();
ASSERT_TRUE(hysteresis.get_state());
// The other directory is immediate.
hysteresis.set_state_and_update(false);
ASSERT_FALSE(hysteresis.get_state());
}