/*
* Copyright 2013 Martin Smock <smock.martin@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package li.strolch.model.timevalue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.util.Collection;
import java.util.SortedSet;
import li.strolch.model.timevalue.impl.FloatValue;
import li.strolch.model.timevalue.impl.TimeVariable;
import li.strolch.model.timevalue.impl.ValueChange;
import org.junit.Before;
import org.junit.Test;
/**
* Basic tests for a {@link TimeVariable} with {@link FloatValue}.
*
* @author Martin Smock <smock.martin@gmail.com>
*/
public class FloatTimeVariableTest {
private static final Long MAX = 100L;
private static final Long STEP = 10L;
private static final Long PICK = 50L;
private TimeVariable<FloatValue> timeVariable;
/**
* set the values ascending with a difference of STEP
*/
@Before
public void init() {
this.timeVariable = new TimeVariable<>();
for (long i = 0; i < MAX; i += STEP) {
this.timeVariable.setValueAt(Long.valueOf(i), new FloatValue(i));
}
}
@Test
public void testGetValueAt() {
ITimeValue<FloatValue> valueAt = this.timeVariable.getValueAt(PICK);
assertEquals(PICK.doubleValue(), valueAt.getValue().getValue(), 0.0001);
}
/**
* test, that the future values start with the PICK time and are ascending
*/
@Test
public void testGetFutureValues() {
Collection<ITimeValue<FloatValue>> futureValues = this.timeVariable.getFutureValues(PICK);
Long expectedTime = PICK;
Double expectedValue = PICK.doubleValue();
for (ITimeValue<FloatValue> value : futureValues) {
assertEquals(expectedTime, value.getTime());
assertTrue(value.getValue().matches(new FloatValue(expectedValue)));
expectedTime += STEP;
expectedValue += STEP.doubleValue();
}
}
/**
* test, that the past values time fields start with 0 and are strictly smaller than PICK
*/
@Test
public void testGetPastValues() {
Collection<ITimeValue<FloatValue>> pastValues = this.timeVariable.getPastValues(MAX);
Long expectedTime = 0L;
Double expectedValue = expectedTime.doubleValue();
for (ITimeValue<FloatValue> value : pastValues) {
assertEquals(expectedTime, value.getTime());
assertTrue(value.getValue().matches(new FloatValue(expectedValue)));
expectedTime += STEP;
expectedValue += STEP.doubleValue();
}
}
/**
* apply a change and check that the future values are all changed
*/
@Test
public void testApplyChange() {
FloatValue doubleValue = new FloatValue(STEP.doubleValue());
IValueChange<FloatValue> change = new ValueChange<>(PICK, doubleValue);
this.timeVariable.applyChange(change);
Collection<ITimeValue<FloatValue>> futureValues = this.timeVariable.getFutureValues(PICK);
Long expectedTime = PICK;
IValue<Double> expectedValue = new FloatValue(PICK.doubleValue() + change.getValue().getValue());
for (ITimeValue<FloatValue> value : futureValues) {
assertEquals(expectedTime, value.getTime());
assertTrue(expectedValue.matches(value.getValue()));
expectedTime += STEP;
expectedValue = expectedValue.add(STEP.doubleValue());
}
}
/**
* apply a change to an empty time variable
*/
@Test
public void testApply2Change() {
this.timeVariable = new TimeVariable<>();
FloatValue doubleValue = new FloatValue(STEP.doubleValue());
IValueChange<FloatValue> change = new ValueChange<>(PICK, doubleValue);
this.timeVariable.applyChange(change);
ITimeValue<FloatValue> actual = this.timeVariable.getValueAt(PICK);
assertNotNull(actual);
IValue<Double> expectedValue = new FloatValue(STEP.doubleValue());
assertEquals(true, actual.getValue().matches(expectedValue));
}
/**
* test that successors matching the values of their predecessors are removed
*/
@Test
public void testCompact() {
this.timeVariable = new TimeVariable<>();
for (Long i = 0L; i < MAX; i += STEP) {
this.timeVariable.setValueAt(i, new FloatValue(STEP.doubleValue()));
}
// call
this.timeVariable.compact();
// check
SortedSet<ITimeValue<FloatValue>> futureValues = this.timeVariable.getFutureValues(0L);
assertEquals(1, futureValues.size());
}
}