1 files changed, 80 insertions, 0 deletions
diff --git a/tests/com/jsyn/unitgen/TestUnitGate.java b/tests/com/jsyn/unitgen/TestUnitGate.java
new file mode 100644
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+++ b/tests/com/jsyn/unitgen/TestUnitGate.java
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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 TestUnitGate extends TestCase {
+
+    protected SynthesisEngine synthesisEngine;
+    protected double time;
+
+    public void checkAutoDisable(LinearRamp ramp, UnitGate envelope) throws InterruptedException {
+        double tolerance = 0.01;
+        Add adder = new Add();
+        synthesisEngine.add(adder);
+
+        envelope.output.connect(adder.inputA);
+        if (ramp.getCircuit() != null) {
+            ramp.output.connect(adder.inputB);
+        }
+
+        envelope.input.setAutoDisableEnabled(true);
+        envelope.setEnabled(false);
+
+        // set up so ramp value should equal time
+        ramp.current.set(0.0);
+        ramp.input.set(1.0);
+        ramp.time.set(1.0);
+
+        synthesisEngine.start();
+        // pull from final adder
+        adder.start();
+
+        time = synthesisEngine.getCurrentTime();
+        time += 0.1;
+        synthesisEngine.sleepUntil(time);
+        assertEquals("still idling", 0.0, envelope.output.getValue());
+        assertEquals("ramp frozen at beginning", 0.0, ramp.output.getValue(), tolerance);
+
+        // run multiple times to make sure we can retrigger the envelope.
+        for (int i = 0; i < 3; i++) {
+            double level = ramp.output.getValue();
+            // Trigger the envelope using trigger()
+            envelope.input.on();
+            time += 0.1;
+            level += 0.1;
+            synthesisEngine.sleepUntil(time);
+            assertEquals("ramp going up " + i, level, ramp.output.getValue(), tolerance);
+            assertTrue("enabled at peak", envelope.isEnabled());
+
+            envelope.input.off();
+            time += 0.1;
+            level += 0.1;
+            synthesisEngine.sleepUntil(time);
+            assertEquals("ramp going up more " + i, level, ramp.output.getValue(), tolerance);
+            assertEquals("at bottom", 0.0, envelope.output.getValue(), 0.1);
+
+            time += 0.2;
+            synthesisEngine.sleepUntil(time);
+            assertEquals("ramp frozen " + i, level, ramp.output.getValue(), tolerance);
+        }
+    }
+
+}