X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2Ftests%2FComponentTest.java;h=47c28e3f69eee301255ed093cbd42677c2e73345;hb=4712d3e6ee08461b7754dbfba1c9e82372bb474d;hp=0638cf8a22a8c5c9cd363f7bb61b2eec805cd6ff;hpb=ebe86d1517aea138ffb6485b7bd2dff31fdb1253;p=Mograsim.git

diff --git a/era.mi/src/era/mi/logic/tests/ComponentTest.java b/era.mi/src/era/mi/logic/tests/ComponentTest.java
index 0638cf8a..47c28e3f 100644
--- a/era.mi/src/era/mi/logic/tests/ComponentTest.java
+++ b/era.mi/src/era/mi/logic/tests/ComponentTest.java
@@ -3,246 +3,371 @@ package era.mi.logic.tests;
 import static org.junit.jupiter.api.Assertions.*;
 
 import java.util.Arrays;
+import java.util.function.LongConsumer;
 
 import org.junit.jupiter.api.Test;
 
 import era.mi.logic.Bit;
 import era.mi.logic.Simulation;
-import era.mi.logic.components.Merger2;
+import era.mi.logic.components.Demux;
+import era.mi.logic.components.Merger;
 import era.mi.logic.components.Mux;
-import era.mi.logic.components.Mux2;
 import era.mi.logic.components.Splitter;
+import era.mi.logic.components.TriStateBuffer;
 import era.mi.logic.components.gates.AndGate;
 import era.mi.logic.components.gates.NotGate;
 import era.mi.logic.components.gates.OrGate;
+import era.mi.logic.components.gates.XorGate;
 import era.mi.logic.wires.WireArray;
-import era.mi.logic.wires.WireArray.WireArrayInput;
+import era.mi.logic.wires.WireArray.WireArrayEnd;
 
 class ComponentTest
 {
 
-//	@Test
-//	void circuitExampleTest()
-//	{
-//		Simulation.TIMELINE.reset();
-//		WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), c = new WireArray(1, 10), d = new WireArray(2, 1), e = new WireArray(1, 1),
-//				f = new WireArray(1, 1), g = new WireArray(1, 1), h = new WireArray(2, 1), i = new WireArray(2, 1), j = new WireArray(1, 1), k = new WireArray(1, 1);
-//		new AndGate(1, a, b, f);
-//		new NotGate(1, f, g);
-//		new Merger2(h, c, g);
-//		new Mux(1, h, d, e, i);
-//		new Splitter(i, k, j);
-//		
-//		a.createInput().feedSignals(Bit.ZERO);
-//		b.createInput().feedSignals(Bit.ONE);
-//		c.createInput().feedSignals(Bit.ZERO);
-//		d.createInput().feedSignals(Bit.ONE, Bit.ONE);
-//		e.createInput().feedSignals(Bit.ONE);
-//		
-//		while(Simulation.TIMELINE.hasNext())
-//		{
-//			Simulation.TIMELINE.executeNext();
-//		}
-//		
-//		assertEquals(Simulation.TIMELINE.getSimulationTime(), 14);
-//		assertEquals(Bit.ONE, j.getValue());
-//		assertEquals(Bit.ZERO, k.getValue());
-//	}
-//
-//	@Test
-//	void splitterTest()
-//	{
-//		Simulation.TIMELINE.reset();
-//		WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), in = new WireArray(8, 1);
-//		in.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO,Bit.ONE, Bit.ZERO, Bit.ONE);
-//		new Splitter(in, a, b, c);
-//		
-//		while(Simulation.TIMELINE.hasNext())
-//		{
-//			Simulation.TIMELINE.executeNext();
-//		}
-//		
-//		assertTrue(Arrays.equals(a.getValues(), new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO }));
-//		assertTrue(Arrays.equals(b.getValues(), new Bit[] { Bit.ONE, Bit.ZERO }));
-//		assertTrue(Arrays.equals(c.getValues(), new Bit[] { Bit.ONE, Bit.ZERO, Bit.ONE }));
-//	}
-//	
-//	@Test
-//	void mergerTest()
-//	{
-//		Simulation.TIMELINE.reset();
-//		WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), out = new WireArray(8, 1);
-//		a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
-//		b.createInput().feedSignals(Bit.ONE, Bit.ZERO);
-//		c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
-//		
-//		new Merger2(out, a, b, c);
-//		
-//		while(Simulation.TIMELINE.hasNext())
-//		{
-//			Simulation.TIMELINE.executeNext();
-//		}
-//		
-//		assertTrue(Arrays.equals(out.getValues(), new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE }));
-//	}
-	
+	@Test
+	void circuitExampleTest()
+	{
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), c = new WireArray(1, 10), d = new WireArray(2, 1),
+				e = new WireArray(1, 1), f = new WireArray(1, 1), g = new WireArray(1, 1), h = new WireArray(2, 1), i = new WireArray(2, 1),
+				j = new WireArray(1, 1), k = new WireArray(1, 1);
+		new AndGate(1, f, a, b);
+		new NotGate(1, f, g);
+		new Merger(h, c, g);
+		new Mux(1, i, e, h, d);
+		new Splitter(i, k, j);
+
+		a.createInput().feedSignals(Bit.ZERO);
+		b.createInput().feedSignals(Bit.ONE);
+		c.createInput().feedSignals(Bit.ZERO);
+		d.createInput().feedSignals(Bit.ONE, Bit.ONE);
+		e.createInput().feedSignals(Bit.ZERO);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ONE, j.getValue());
+		assertEquals(Bit.ZERO, k.getValue());
+	}
+
+	@Test
+	void splitterTest()
+	{
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), in = new WireArray(8, 1);
+		in.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+		new Splitter(in, a, b, c);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
+		assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);
+		assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
+	}
+
+	@Test
+	void mergerTest()
+	{
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), out = new WireArray(8, 1);
+		a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
+		b.createInput().feedSignals(Bit.ONE, Bit.ZERO);
+		c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		new Merger(out, a, b, c);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertTrue(
+				Arrays.equals(out.getValues(), new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE }));
+	}
+
+	@Test
+	void triStateBufferTest()
+	{
+		WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), en = new WireArray(1, 1), notEn = new WireArray(1, 1);
+		new NotGate(1, en, notEn);
+		new TriStateBuffer(1, a, b, en);
+		new TriStateBuffer(1, b, a, notEn);
+
+		WireArrayEnd enI = en.createInput(), aI = a.createInput(), bI = b.createInput();
+		enI.feedSignals(Bit.ONE);
+		aI.feedSignals(Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ONE, b.getValue());
+
+		bI.feedSignals(Bit.ZERO);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.X, b.getValue());
+		assertEquals(Bit.ONE, a.getValue());
+
+		aI.clearSignals();
+		enI.feedSignals(Bit.ZERO);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ZERO, a.getValue());
+
+	}
+
 	@Test
 	void muxTest()
 	{
 		Simulation.TIMELINE.reset();
-		WireArray a = new WireArray(1, 3), b = new WireArray(1, 2), select = new WireArray(1, 1), out = new WireArray(1, 1);
-		WireArrayInput selectIn = select.createInput();
-		
-		selectIn.feedSignals(Bit.ZERO);
-		a.createInput().feedSignals(Bit.ONE);
-		b.createInput().feedSignals(Bit.ZERO);
-		
-		new Mux2(1, out, select, a, b);
-		assertEquals(Bit.Z, out.getValue());
-		while(Simulation.TIMELINE.hasNext())
-		{
-			Simulation.TIMELINE.executeNext();
-		}
-
-		assertEquals(Bit.ONE, out.getValue());
-		selectIn.feedSignals(Bit.ONE);
-		while(Simulation.TIMELINE.hasNext())
-		{
-			Simulation.TIMELINE.executeNext();
-		}
-		
-		assertEquals(out.getValue(), Bit.ZERO);
+		WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4), select = new WireArray(2, 5),
+				out = new WireArray(4, 1);
+		WireArrayEnd selectIn = select.createInput();
+
+		selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
+		a.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		c.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		new Mux(1, out, select, a, b, c);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		selectIn.feedSignals(Bit.ZERO, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		selectIn.feedSignals(Bit.ONE, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+
+	}
+
+	@Test
+	void demuxTest()
+	{
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4), select = new WireArray(2, 5),
+				in = new WireArray(4, 1);
+		WireArrayEnd selectIn = select.createInput();
+
+		selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
+		in.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+
+		new Demux(1, in, select, a, b, c);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
+		assertBitArrayEquals(c.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
+		selectIn.feedSignals(Bit.ZERO, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
+		assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+
+		selectIn.feedSignals(Bit.ONE, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
+		assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+
 	}
 
 	@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 }));
+		WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
+		new AndGate(1, c, a, b);
+		a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+		b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(c.getValues(), 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 }));
+		WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
+		new OrGate(1, c, a, b);
+		a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+		b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
 	}
-	
+
+	@Test
+	void xorTest()
+	{
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(3, 1), b = new WireArray(3, 2), c = new WireArray(3, 1), d = new WireArray(3, 1);
+		new XorGate(1, d, a, b, c);
+		a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
+		b.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+		c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, 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);
+		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, t2, r, nq);
+		new OrGate(1, t1, s, q);
 		new NotGate(1, t2, q);
 		new NotGate(1, t1, nq);
-	
-		WireArrayInput sIn = s.createInput(), rIn = r.createInput();
-		
+
+		WireArrayEnd 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);
-		
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ONE, q.getValue());
+		assertEquals(Bit.ZERO, nq.getValue());
+
 		sIn.feedSignals(Bit.ZERO);
-		
-		while(Simulation.TIMELINE.hasNext())
-		{
-			Simulation.TIMELINE.executeNext();
-		}
-		
-		assertEquals(q.getValue(), Bit.ONE);
-		assertEquals(nq.getValue(), Bit.ZERO);
-		
+
+		Simulation.TIMELINE.executeAll();
+		assertEquals(Bit.ONE, q.getValue());
+		assertEquals(Bit.ZERO, nq.getValue());
+
 		rIn.feedSignals(Bit.ONE);
-		
-		while(Simulation.TIMELINE.hasNext())
-		{
-			Simulation.TIMELINE.executeNext();
-		}
-		
-		assertEquals(q.getValue(), Bit.ZERO);
-		assertEquals(nq.getValue(), Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ZERO, q.getValue());
+		assertEquals(Bit.ONE, nq.getValue());
 	}
-	
+
 	@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);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(15, a.getUnsignedValue());
+		assertEquals(-1, a.getSignedValue());
 	}
-	
+
 	@Test
 	void multipleInputs()
 	{
 		Simulation.TIMELINE.reset();
 		WireArray w = new WireArray(2, 1);
-		WireArrayInput wI1 = w.createInput(), wI2 = w.createInput();
+		WireArrayEnd 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 }));
-		
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), 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 }));
-		
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), 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 }));
-		
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), 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 }));
+		w.addObserver((i, oldValues) -> fail("WireArray notified observer, although value did not change."));
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), 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);
+		WireArrayEnd aI = a.createInput();
+		WireArrayEnd bI = b.createInput();
+		WireArrayEnd cI = c.createInput();
+
+		TestBitDisplay test = new TestBitDisplay(c);
+		TestBitDisplay test2 = new TestBitDisplay(a);
+		LongConsumer print = time -> System.out.format("Time %2d\n   a: %s\n   b: %s\n   c: %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);
+
+		new Connector(b, c);
+		test.assertAfterSimulationIs(print, Bit.Z);
+		System.err.println("ONE");
+		bI.feedSignals(Bit.ONE);
+		test.assertAfterSimulationIs(print, Bit.ONE);
+		System.err.println("ZERO");
+		bI.feedSignals(Bit.ZERO);
+		test.assertAfterSimulationIs(print, Bit.ZERO);
+		System.err.println("Z");
+		bI.feedSignals(Bit.Z);
+		test.assertAfterSimulationIs(print, Bit.Z);
+
+		new Connector(a, b);
+		System.err.println("Z 2");
+		aI.feedSignals(Bit.Z);
+		test.assertAfterSimulationIs(print, Bit.Z);
+		test2.assertAfterSimulationIs(Bit.Z);
+		System.err.println("ONE 2");
+		aI.feedSignals(Bit.ONE);
+		test.assertAfterSimulationIs(print, Bit.ONE);
+		test2.assertAfterSimulationIs(Bit.ONE);
+		System.err.println("ZERO 2");
+		aI.feedSignals(Bit.ZERO);
+		test.assertAfterSimulationIs(print, Bit.ZERO);
+		test2.assertAfterSimulationIs(Bit.ZERO);
+		System.err.println("Z 2 II");
+		aI.feedSignals(Bit.Z);
+		test.assertAfterSimulationIs(print, Bit.Z);
+		test2.assertAfterSimulationIs(Bit.Z);
+
+		System.err.println("No Conflict yet");
+		bI.feedSignals(Bit.ONE);
+		test.assertAfterSimulationIs(print, Bit.ONE);
+		test2.assertAfterSimulationIs(Bit.ONE);
+		aI.feedSignals(Bit.ONE);
+		test.assertAfterSimulationIs(print, Bit.ONE);
+		test2.assertAfterSimulationIs(Bit.ONE);
+		System.err.println("Conflict");
+		aI.feedSignals(Bit.ZERO);
+		test.assertAfterSimulationIs(print, Bit.X);
+		test2.assertAfterSimulationIs(Bit.X);
+		aI.feedSignals(Bit.ONE);
+		test.assertAfterSimulationIs(print, Bit.ONE);
+		test2.assertAfterSimulationIs(Bit.ONE);
+	}
+
+	private static void assertBitArrayEquals(Bit[] actual, Bit... expected)
+	{
+		assertArrayEquals(expected, actual);
 	}
 }