-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.Demux;
-import era.mi.logic.components.Merger;
-import era.mi.logic.components.Mux;
-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;
-
-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, 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);
-
- WireArrayInput 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(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4),
- select = new WireArray(2, 5), out = new WireArray(4, 1);
- WireArrayInput 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);
- WireArrayInput 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.Z, Bit.Z, Bit.Z, Bit.Z);
- assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
- selectIn.feedSignals(Bit.ZERO, Bit.ONE);
- Simulation.TIMELINE.executeAll();
-
- assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
- assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
- 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.Z, Bit.Z, Bit.Z, Bit.Z);
- assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-
- }
-
- @Test
- void andTest()
- {
- Simulation.TIMELINE.reset();
- 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();
- 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, 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();
-
- sIn.feedSignals(Bit.ONE);
- rIn.feedSignals(Bit.ZERO);
-
- Simulation.TIMELINE.executeAll();
-
- assertEquals(Bit.ONE, q.getValue());
- assertEquals(Bit.ZERO, nq.getValue());
-
- sIn.feedSignals(Bit.ZERO);
-
- Simulation.TIMELINE.executeAll();
- assertEquals(Bit.ONE, q.getValue());
- assertEquals(Bit.ZERO, nq.getValue());
-
- rIn.feedSignals(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);
-
- 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();
- wI1.feedSignals(Bit.ONE, Bit.Z);
- wI2.feedSignals(Bit.Z, Bit.X);
- Simulation.TIMELINE.executeAll();
- assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
-
- wI2.feedSignals(Bit.ZERO, Bit.Z);
- Simulation.TIMELINE.executeAll();
- assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
-
- wI2.feedSignals(Bit.Z, Bit.Z);
- Simulation.TIMELINE.executeAll();
- assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
-
- wI2.feedSignals(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);
- WireArrayInput aI = a.createInput();
- WireArrayInput bI = b.createInput();
- WireArrayInput 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);
- }
-}