+
+ assertTrue(Arrays.equals(new Bit[] { Bit.Z, Bit.Z, Bit.Z, Bit.Z }, out.getValues()));
+
+ }
+
+ @Test
+ void andTest()
+ {
+ Simulation.TIMELINE.reset();
+ AndGate gate = new AndGate(1, new WireArray(4, 1), new WireArray(4, 1), new WireArray(4, 1));
+ gate.getA().createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+ gate.getB().createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+ assertTrue(Arrays.equals(gate.getOut().getValues(), new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO }));
+ }
+
+ @Test
+ void orTest()
+ {
+ Simulation.TIMELINE.reset();
+ OrGate gate = new OrGate(1, new WireArray(4, 1), new WireArray(4, 1), new WireArray(4, 1));
+ gate.getA().createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+ gate.getB().createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+
+ assertTrue(Arrays.equals(gate.getOut().getValues(), new Bit[] { Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE }));
+ }
+
+ @Test
+ void rsLatchCircuitTest()
+ {
+ Simulation.TIMELINE.reset();
+ WireArray r = new WireArray(1, 1), s = new WireArray(1, 1), t1 = new WireArray(1, 15), t2 = new WireArray(1, 1),
+ q = new WireArray(1, 1), nq = new WireArray(1, 1);
+
+ new OrGate(1, r, nq, t2);
+ new OrGate(1, s, q, t1);
+ new NotGate(1, t2, q);
+ new NotGate(1, t1, nq);
+
+ WireArrayInput sIn = s.createInput(), rIn = r.createInput();
+
+ sIn.feedSignals(Bit.ONE);
+ rIn.feedSignals(Bit.ZERO);
+
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+
+ assertEquals(q.getValue(), Bit.ONE);
+ assertEquals(nq.getValue(), Bit.ZERO);
+
+ sIn.feedSignals(Bit.ZERO);
+
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+
+ assertEquals(q.getValue(), Bit.ONE);
+ assertEquals(nq.getValue(), Bit.ZERO);
+
+ rIn.feedSignals(Bit.ONE);
+
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+
+ assertEquals(q.getValue(), Bit.ZERO);
+ assertEquals(nq.getValue(), Bit.ONE);
+ }
+
+ @Test
+ void numericValueTest()
+ {
+ Simulation.TIMELINE.reset();
+
+ WireArray a = new WireArray(4, 1);
+ a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
+
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+
+ assertEquals(a.getUnsignedValue(), 15);
+ assertEquals(a.getSignedValue(), -1);
+ }
+
+ @Test
+ void multipleInputs()
+ {
+ Simulation.TIMELINE.reset();
+ WireArray w = new WireArray(2, 1);
+ WireArrayInput wI1 = w.createInput(), wI2 = w.createInput();
+ wI1.feedSignals(Bit.ONE, Bit.Z);
+ wI2.feedSignals(Bit.Z, Bit.X);
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+ assertTrue(Arrays.equals(w.getValues(), new Bit[] { Bit.ONE, Bit.X }));
+
+ wI2.feedSignals(Bit.ZERO, Bit.Z);
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+ assertTrue(Arrays.equals(w.getValues(), new Bit[] { Bit.X, Bit.Z }));
+
+ wI2.feedSignals(Bit.Z, Bit.Z);
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+ assertTrue(Arrays.equals(w.getValues(), new Bit[] { Bit.ONE, Bit.Z }));
+
+ wI2.feedSignals(Bit.ONE, Bit.Z);
+ w.addObserver((i) -> fail("WireArray notified observer, although value did not change."));
+ while (Simulation.TIMELINE.hasNext())
+ {
+ Simulation.TIMELINE.executeNext();
+ }
+ assertTrue(Arrays.equals(w.getValues(), new Bit[] { Bit.ONE, Bit.Z }));
+ }
+
+// @Test
+// void wireConnections()
+// {
+// // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
+//
+// Simulation.TIMELINE.reset();
+//
+// WireArray a = new WireArray(1, 2);
+// WireArray b = new WireArray(1, 2);
+// WireArray c = new WireArray(1, 2);
+// WireArrayInput aI = a.createInput();
+// WireArrayInput bI = b.createInput();
+// WireArrayInput cI = c.createInput();
+//
+// TestBitDisplay test = new TestBitDisplay(c);
+// LongConsumer print = time -> System.out.format("Time %2d\n %s\n %s\n %s\n", time, a, b, c);
+//
+// cI.feedSignals(Bit.ONE);
+// test.assertAfterSimulationIs(print, Bit.ONE);
+//
+// cI.feedSignals(Bit.X);
+// test.assertAfterSimulationIs(print, Bit.X);
+//
+// cI.feedSignals(Bit.X);
+// cI.feedSignals(Bit.Z);
+// test.assertAfterSimulationIs(print, Bit.Z);
+//
+// Connector c1 = new Connector(b, c);
+// test.assertAfterSimulationIs(print, Bit.Z);
+// System.out.println("ONE");
+// bI.feedSignals(Bit.ONE);
+// test.assertAfterSimulationIs(print, Bit.ONE);
+// System.out.println("ZERO");
+// bI.feedSignals(Bit.ZERO);
+// test.assertAfterSimulationIs(print, Bit.ZERO);
+// System.out.println("Z");
+// bI.feedSignals(Bit.Z);
+// test.assertAfterSimulationIs(Bit.Z);
+// }
+
+ private static void assertBitArrayEquals(Bit[] actual, Bit... expected)
+ {
+ assertArrayEquals(expected, actual);
+ }