--- /dev/null
+package mograsim.logic.core.tests;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import java.util.function.LongConsumer;
+
+import org.junit.jupiter.api.Test;
+
+import mograsim.logic.core.components.Connector;
+import mograsim.logic.core.components.Demux;
+import mograsim.logic.core.components.Merger;
+import mograsim.logic.core.components.Mux;
+import mograsim.logic.core.components.Splitter;
+import mograsim.logic.core.components.TriStateBuffer;
+import mograsim.logic.core.components.gates.AndGate;
+import mograsim.logic.core.components.gates.NotGate;
+import mograsim.logic.core.components.gates.OrGate;
+import mograsim.logic.core.components.gates.XorGate;
+import mograsim.logic.core.timeline.Timeline;
+import mograsim.logic.core.types.Bit;
+import mograsim.logic.core.types.BitVector;
+import mograsim.logic.core.wires.Wire;
+import mograsim.logic.core.wires.Wire.ReadEnd;
+import mograsim.logic.core.wires.Wire.ReadWriteEnd;
+
+class ComponentTest
+{
+ private Timeline t = new Timeline(11);
+
+ @Test
+ void circuitExampleTest()
+ {
+ Wire a = new Wire(t, 1, 1), b = new Wire(t, 1, 1), c = new Wire(t, 1, 10), d = new Wire(t, 2, 1), e = new Wire(t, 1, 1),
+ f = new Wire(t, 1, 1), g = new Wire(t, 1, 1), h = new Wire(t, 2, 1), i = new Wire(t, 2, 1), j = new Wire(t, 1, 1),
+ k = new Wire(t, 1, 1);
+ new AndGate(t, 1, f.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
+ new NotGate(t, 1, f.createReadOnlyEnd(), g.createReadWriteEnd());
+ new Merger(t, h.createReadWriteEnd(), c.createReadOnlyEnd(), g.createReadOnlyEnd());
+ new Mux(t, 1, i.createReadWriteEnd(), e.createReadOnlyEnd(), h.createReadOnlyEnd(), d.createReadOnlyEnd());
+ new Splitter(t, i.createReadOnlyEnd(), k.createReadWriteEnd(), j.createReadWriteEnd());
+
+ a.createReadWriteEnd().feedSignals(Bit.ZERO);
+ b.createReadWriteEnd().feedSignals(Bit.ONE);
+ c.createReadWriteEnd().feedSignals(Bit.ZERO);
+ d.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE);
+ e.createReadWriteEnd().feedSignals(Bit.ZERO);
+
+ t.executeAll();
+
+ assertEquals(Bit.ONE, j.getValue());
+ assertEquals(Bit.ZERO, k.getValue());
+ }
+
+ @Test
+ void splitterTest()
+ {
+ t.reset();
+ Wire a = new Wire(t, 3, 1), b = new Wire(t, 2, 1), c = new Wire(t, 3, 1), in = new Wire(t, 8, 1);
+ in.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+ new Splitter(t, in.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(), c.createReadWriteEnd());
+
+ t.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()
+ {
+ t.reset();
+ Wire a = new Wire(t, 3, 1), b = new Wire(t, 2, 1), c = new Wire(t, 3, 1), out = new Wire(t, 8, 1);
+ a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
+ b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO);
+ c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ new Merger(t, out.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
+
+ t.executeAll();
+
+ assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+ }
+
+ @Test
+ void triStateBufferTest()
+ {
+ Wire a = new Wire(t, 1, 1), b = new Wire(t, 1, 1), en = new Wire(t, 1, 1), notEn = new Wire(t, 1, 1);
+ new NotGate(t, 1, en.createReadOnlyEnd(), notEn.createReadWriteEnd());
+ new TriStateBuffer(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd(), en.createReadOnlyEnd());
+ new TriStateBuffer(t, 1, b.createReadOnlyEnd(), a.createReadWriteEnd(), notEn.createReadOnlyEnd());
+
+ ReadWriteEnd enI = en.createReadWriteEnd(), aI = a.createReadWriteEnd(), bI = b.createReadWriteEnd();
+ enI.feedSignals(Bit.ONE);
+ aI.feedSignals(Bit.ONE);
+ bI.feedSignals(Bit.Z);
+
+ t.executeAll();
+
+ assertEquals(Bit.ONE, b.getValue());
+
+ bI.feedSignals(Bit.ZERO);
+
+ t.executeAll();
+
+ assertEquals(Bit.X, b.getValue());
+ assertEquals(Bit.ONE, a.getValue());
+
+ aI.clearSignals();
+ enI.feedSignals(Bit.ZERO);
+
+ t.executeAll();
+
+ assertEquals(Bit.ZERO, a.getValue());
+
+ }
+
+ @Test
+ void muxTest()
+ {
+ t.reset();
+ Wire a = new Wire(t, 4, 3), b = new Wire(t, 4, 6), c = new Wire(t, 4, 4), select = new Wire(t, 2, 5), out = new Wire(t, 4, 1);
+ ReadWriteEnd selectIn = select.createReadWriteEnd();
+
+ selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
+ a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+ c.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ new Mux(t, 1, out.createReadWriteEnd(), select.createReadOnlyEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(),
+ c.createReadOnlyEnd());
+ t.executeAll();
+
+ assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+ selectIn.feedSignals(Bit.ZERO, Bit.ONE);
+ t.executeAll();
+
+ assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ selectIn.feedSignals(Bit.ONE, Bit.ONE);
+ t.executeAll();
+
+ assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+
+ }
+
+ @Test
+ void demuxTest()
+ {
+ t.reset();
+ Wire a = new Wire(t, 4, 3), b = new Wire(t, 4, 6), c = new Wire(t, 4, 4), select = new Wire(t, 2, 5), in = new Wire(t, 4, 1);
+ ReadWriteEnd selectIn = select.createReadWriteEnd();
+
+ selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
+ in.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+
+ new Demux(t, 1, in.createReadOnlyEnd(), select.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(),
+ c.createReadWriteEnd());
+ t.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);
+ t.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);
+ t.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()
+ {
+ t.reset();
+ Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
+ new AndGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
+ a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+ b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ t.executeAll();
+
+ assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
+ }
+
+ @Test
+ void orTest()
+ {
+ t.reset();
+ Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
+ new OrGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
+ a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+ b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ t.executeAll();
+
+ assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
+ }
+
+ @Test
+ void xorTest()
+ {
+ t.reset();
+ Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 2), c = new Wire(t, 3, 1), d = new Wire(t, 3, 1);
+ new XorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
+ a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
+ b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+ c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+
+ t.executeAll();
+
+ assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
+ }
+
+ @Test
+ void notTest()
+ {
+ t.reset();
+ Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 2);
+ new NotGate(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd());
+ a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
+
+ t.executeAll();
+
+ assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO, Bit.ZERO);
+ }
+
+ @Test
+ void rsLatchCircuitTest()
+ {
+ t.reset();
+ Wire r = new Wire(t, 1, 1), s = new Wire(t, 1, 1), t1 = new Wire(t, 1, 15), t2 = new Wire(t, 1, 1), q = new Wire(t, 1, 1),
+ nq = new Wire(t, 1, 1);
+
+ new OrGate(t, 1, t2.createReadWriteEnd(), r.createReadOnlyEnd(), nq.createReadOnlyEnd());
+ new OrGate(t, 1, t1.createReadWriteEnd(), s.createReadOnlyEnd(), q.createReadOnlyEnd());
+ new NotGate(t, 1, t2.createReadOnlyEnd(), q.createReadWriteEnd());
+ new NotGate(t, 1, t1.createReadOnlyEnd(), nq.createReadWriteEnd());
+
+ ReadWriteEnd sIn = s.createReadWriteEnd(), rIn = r.createReadWriteEnd();
+
+ sIn.feedSignals(Bit.ONE);
+ rIn.feedSignals(Bit.ZERO);
+
+ t.executeAll();
+
+ assertEquals(Bit.ONE, q.getValue());
+ assertEquals(Bit.ZERO, nq.getValue());
+
+ sIn.feedSignals(Bit.ZERO);
+
+ t.executeAll();
+ assertEquals(Bit.ONE, q.getValue());
+ assertEquals(Bit.ZERO, nq.getValue());
+
+ rIn.feedSignals(Bit.ONE);
+
+ t.executeAll();
+
+ assertEquals(Bit.ZERO, q.getValue());
+ assertEquals(Bit.ONE, nq.getValue());
+ }
+
+ @Test
+ void numericValueTest()
+ {
+ t.reset();
+
+ Wire a = new Wire(t, 4, 1);
+ a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
+
+ t.executeAll();
+
+ assertEquals(15, a.getUnsignedValue());
+ assertEquals(-1, a.getSignedValue());
+ }
+
+ boolean flag = false;
+
+ @Test
+ void simpleTimelineTest()
+ {
+ Timeline t = new Timeline(3);
+ flag = false;
+ t.addEvent((e) ->
+ {
+ if (!flag)
+ fail();
+ flag = false;
+ }, 15);
+ t.addEvent((e) ->
+ {
+ if (flag)
+ fail();
+ flag = true;
+ }, 10);
+ t.addEvent((e) ->
+ {
+ if (flag)
+ fail();
+ flag = true;
+ }, 20);
+ t.addEvent((e) ->
+ {
+ fail("Only supposed to execute until timestamp 20, not 25");
+ }, 25);
+
+ t.executeUntil(t.laterThan(20), 100);
+
+ if (!flag)
+ fail();
+ }
+
+ @Test
+ void multipleInputs()
+ {
+ t.reset();
+ Wire w = new Wire(t, 2, 1);
+ ReadWriteEnd wI1 = w.createReadWriteEnd(), wI2 = w.createReadWriteEnd();
+ wI1.feedSignals(Bit.ONE, Bit.Z);
+ wI2.feedSignals(Bit.Z, Bit.X);
+ t.executeAll();
+ assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
+
+ wI2.feedSignals(Bit.ZERO, Bit.Z);
+ t.executeAll();
+ assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
+
+ wI2.feedSignals(Bit.Z, Bit.Z);
+ t.executeAll();
+ assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
+
+ wI2.feedSignals(Bit.ONE, Bit.Z);
+ ReadEnd rE = w.createReadOnlyEnd();
+ rE.addObserver((i, oldValues) -> fail("WireEnd notified observer, although value did not change."));
+ t.executeAll();
+ rE.close();
+ wI1.feedSignals(Bit.X, Bit.X);
+ t.executeAll();
+ wI1.addObserver((i, oldValues) -> fail("WireEnd notified observer, although it was closed."));
+ wI1.close();
+ assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
+ }
+
+ @Test
+ void wireConnections()
+ {
+ // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
+
+ t.reset();
+
+ Wire a = new Wire(t, 1, 2);
+ Wire b = new Wire(t, 1, 2);
+ Wire c = new Wire(t, 1, 2);
+ ReadWriteEnd aI = a.createReadWriteEnd();
+ ReadWriteEnd bI = b.createReadWriteEnd();
+ ReadWriteEnd cI = c.createReadWriteEnd();
+
+ TestBitDisplay test = new TestBitDisplay(t, c.createReadOnlyEnd());
+ TestBitDisplay test2 = new TestBitDisplay(t, a.createReadOnlyEnd());
+ 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(t, b.createReadWriteEnd(), c.createReadWriteEnd()).connect();
+ 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(t, a.createReadWriteEnd(), b.createReadWriteEnd()).connect();
+ 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(BitVector actual, Bit... expected)
+ {
+ assertArrayEquals(expected, actual.getBits());
+ }
+}
projects / Mograsim.git / blobdiff