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/*
* Copyright 2009 Phil Burk, Mobileer Inc
*
* 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 com.jsyn.unitgen;
import junit.framework.TestCase;
import com.jsyn.engine.SynthesisEngine;
public class TestEnable extends TestCase {
SynthesisEngine synthesisEngine;
@Override
protected void setUp() throws Exception {
super.setUp();
synthesisEngine = new SynthesisEngine();
synthesisEngine.setRealTime(false);
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
synthesisEngine.stop();
}
public void testEnablingGate() throws InterruptedException {
LinearRamp ramp = new LinearRamp();
synthesisEngine.add(ramp);
EnablingGate enabler = new EnablingGate();
synthesisEngine.add(enabler);
Add adder = new Add();
synthesisEngine.add(adder);
ramp.output.connect(enabler.input);
enabler.output.connect(adder.inputA);
// set up so ramp should equal time
ramp.current.set(0.0);
ramp.input.set(1.0);
ramp.time.set(1.0);
enabler.gate.set(1.0);
synthesisEngine.start();
double startTime = synthesisEngine.getCurrentTime();
// pull from final adder
adder.start();
synthesisEngine.sleepUntil(startTime + 0.1);
double tolerance = 0.002;
assertEquals("ramp going up", 0.1, ramp.output.getValue(), tolerance);
assertEquals("enabler going up", 0.1, enabler.output.getValue(), tolerance);
assertEquals("adder going up", 0.1, adder.output.getValue(), tolerance);
synthesisEngine.sleepUntil(startTime + 0.2);
assertEquals("start enabled", 0.2, adder.output.getValue(), tolerance);
// disable everything upstream
enabler.gate.set(0.0);
synthesisEngine.sleepUntil(startTime + 0.3);
assertEquals("should not be pulled", 0.2, ramp.output.getValue(), tolerance);
assertEquals("should be disabled", false, enabler.isEnabled());
assertEquals("should be zero", 0.0, enabler.output.getValue(), tolerance);
assertEquals("zero", 0.0, adder.output.getValue(), tolerance);
}
}
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