era.mi/src/era/mi/logic/tests/ComponentTest.java

   1 package era.mi.logic.tests;
   2
   3 import static org.junit.jupiter.api.Assertions.*;
   4
   5 import java.util.Arrays;
   6 import java.util.function.LongConsumer;
   7
   8 import org.junit.jupiter.api.Test;
   9
  10 import era.mi.logic.Bit;
  11 import era.mi.logic.Simulation;
  12 import era.mi.logic.components.Demux;
  13 import era.mi.logic.components.Merger;
  14 import era.mi.logic.components.Mux;
  15 import era.mi.logic.components.Splitter;
  16 import era.mi.logic.components.TriStateBuffer;
  17 import era.mi.logic.components.gates.AndGate;
  18 import era.mi.logic.components.gates.NotGate;
  19 import era.mi.logic.components.gates.OrGate;
  20 import era.mi.logic.components.gates.XorGate;
  21 import era.mi.logic.wires.WireArray;
  22 import era.mi.logic.wires.WireArray.WireArrayEnd;
  23
  24 class ComponentTest
  25 {
  26
  27         @Test
  28         void circuitExampleTest()
  29         {
  30                 Simulation.TIMELINE.reset();
  31                 WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), c = new WireArray(1, 10), d = new WireArray(2, 1),
  32                                 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),
  33                                 j = new WireArray(1, 1), k = new WireArray(1, 1);
  34                 new AndGate(1, f, a, b);
  35                 new NotGate(1, f, g);
  36                 new Merger(h, c, g);
  37                 new Mux(1, i, e, h, d);
  38                 new Splitter(i, k, j);
  39
  40                 a.createInput().feedSignals(Bit.ZERO);
  41                 b.createInput().feedSignals(Bit.ONE);
  42                 c.createInput().feedSignals(Bit.ZERO);
  43                 d.createInput().feedSignals(Bit.ONE, Bit.ONE);
  44                 e.createInput().feedSignals(Bit.ZERO);
  45
  46                 Simulation.TIMELINE.executeAll();
  47
  48                 assertEquals(Bit.ONE, j.getValue());
  49                 assertEquals(Bit.ZERO, k.getValue());
  50         }
  51
  52         @Test
  53         void splitterTest()
  54         {
  55                 Simulation.TIMELINE.reset();
  56                 WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), in = new WireArray(8, 1);
  57                 in.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
  58                 new Splitter(in, a, b, c);
  59
  60                 Simulation.TIMELINE.executeAll();
  61
  62                 assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
  63                 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);
  64                 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
  65         }
  66
  67         @Test
  68         void mergerTest()
  69         {
  70                 Simulation.TIMELINE.reset();
  71                 WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), out = new WireArray(8, 1);
  72                 a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
  73                 b.createInput().feedSignals(Bit.ONE, Bit.ZERO);
  74                 c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
  75
  76                 new Merger(out, a, b, c);
  77
  78                 Simulation.TIMELINE.executeAll();
  79
  80                 assertTrue(
  81                                 Arrays.equals(out.getValues(), new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE }));
  82         }
  83
  84         @Test
  85         void triStateBufferTest()
  86         {
  87                 WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), en = new WireArray(1, 1), notEn = new WireArray(1, 1);
  88                 new NotGate(1, en, notEn);
  89                 new TriStateBuffer(1, a, b, en);
  90                 new TriStateBuffer(1, b, a, notEn);
  91
  92                 WireArrayEnd enI = en.createInput(), aI = a.createInput(), bI = b.createInput();
  93                 enI.feedSignals(Bit.ONE);
  94                 aI.feedSignals(Bit.ONE);
  95
  96                 Simulation.TIMELINE.executeAll();
  97
  98                 assertEquals(Bit.ONE, b.getValue());
  99
 100                 bI.feedSignals(Bit.ZERO);
 101
 102                 Simulation.TIMELINE.executeAll();
 103
 104                 assertEquals(Bit.X, b.getValue());
 105                 assertEquals(Bit.ONE, a.getValue());
 106
 107                 aI.clearSignals();
 108                 enI.feedSignals(Bit.ZERO);
 109
 110                 Simulation.TIMELINE.executeAll();
 111
 112                 assertEquals(Bit.ZERO, a.getValue());
 113
 114         }
 115
 116         @Test
 117         void muxTest()
 118         {
 119                 Simulation.TIMELINE.reset();
 120                 WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4), select = new WireArray(2, 5),
 121                                 out = new WireArray(4, 1);
 122                 WireArrayEnd selectIn = select.createInput();
 123
 124                 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
 125                 a.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 126                 c.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
 127
 128                 new Mux(1, out, select, a, b, c);
 129                 Simulation.TIMELINE.executeAll();
 130
 131                 assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 132                 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
 133                 Simulation.TIMELINE.executeAll();
 134
 135                 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
 136
 137                 selectIn.feedSignals(Bit.ONE, Bit.ONE);
 138                 Simulation.TIMELINE.executeAll();
 139
 140                 assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
 141
 142         }
 143
 144         @Test
 145         void demuxTest()
 146         {
 147                 Simulation.TIMELINE.reset();
 148                 WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4), select = new WireArray(2, 5),
 149                                 in = new WireArray(4, 1);
 150                 WireArrayEnd selectIn = select.createInput();
 151
 152                 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
 153                 in.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 154
 155                 new Demux(1, in, select, a, b, c);
 156                 Simulation.TIMELINE.executeAll();
 157
 158                 assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 159                 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
 160                 assertBitArrayEquals(c.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
 161                 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
 162                 Simulation.TIMELINE.executeAll();
 163
 164                 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
 165                 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
 166                 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 167
 168                 selectIn.feedSignals(Bit.ONE, Bit.ONE);
 169                 Simulation.TIMELINE.executeAll();
 170
 171                 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
 172                 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
 173                 assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
 174
 175         }
 176
 177         @Test
 178         void andTest()
 179         {
 180                 Simulation.TIMELINE.reset();
 181                 WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
 182                 new AndGate(1, c, a, b);
 183                 a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
 184                 b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
 185
 186                 Simulation.TIMELINE.executeAll();
 187
 188                 assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
 189         }
 190
 191         @Test
 192         void orTest()
 193         {
 194                 Simulation.TIMELINE.reset();
 195                 WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
 196                 new OrGate(1, c, a, b);
 197                 a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
 198                 b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
 199
 200                 Simulation.TIMELINE.executeAll();
 201
 202                 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
 203         }
 204
 205         @Test
 206         void xorTest()
 207         {
 208                 Simulation.TIMELINE.reset();
 209                 WireArray a = new WireArray(3, 1), b = new WireArray(3, 2), c = new WireArray(3, 1), d = new WireArray(3, 1);
 210                 new XorGate(1, d, a, b, c);
 211                 a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
 212                 b.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
 213                 c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
 214
 215                 Simulation.TIMELINE.executeAll();
 216
 217                 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
 218         }
 219
 220         @Test
 221         void rsLatchCircuitTest()
 222         {
 223                 Simulation.TIMELINE.reset();
 224                 WireArray r = new WireArray(1, 1), s = new WireArray(1, 1), t1 = new WireArray(1, 15), t2 = new WireArray(1, 1),
 225                                 q = new WireArray(1, 1), nq = new WireArray(1, 1);
 226
 227                 new OrGate(1, t2, r, nq);
 228                 new OrGate(1, t1, s, q);
 229                 new NotGate(1, t2, q);
 230                 new NotGate(1, t1, nq);
 231
 232                 WireArrayEnd sIn = s.createInput(), rIn = r.createInput();
 233
 234                 sIn.feedSignals(Bit.ONE);
 235                 rIn.feedSignals(Bit.ZERO);
 236
 237                 Simulation.TIMELINE.executeAll();
 238
 239                 assertEquals(Bit.ONE, q.getValue());
 240                 assertEquals(Bit.ZERO, nq.getValue());
 241
 242                 sIn.feedSignals(Bit.ZERO);
 243
 244                 Simulation.TIMELINE.executeAll();
 245                 assertEquals(Bit.ONE, q.getValue());
 246                 assertEquals(Bit.ZERO, nq.getValue());
 247
 248                 rIn.feedSignals(Bit.ONE);
 249
 250                 Simulation.TIMELINE.executeAll();
 251
 252                 assertEquals(Bit.ZERO, q.getValue());
 253                 assertEquals(Bit.ONE, nq.getValue());
 254         }
 255
 256         @Test
 257         void numericValueTest()
 258         {
 259                 Simulation.TIMELINE.reset();
 260
 261                 WireArray a = new WireArray(4, 1);
 262                 a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
 263
 264                 Simulation.TIMELINE.executeAll();
 265
 266                 assertEquals(15, a.getUnsignedValue());
 267                 assertEquals(-1, a.getSignedValue());
 268         }
 269
 270         @Test
 271         void multipleInputs()
 272         {
 273                 Simulation.TIMELINE.reset();
 274                 WireArray w = new WireArray(2, 1);
 275                 WireArrayEnd wI1 = w.createInput(), wI2 = w.createInput();
 276                 wI1.feedSignals(Bit.ONE, Bit.Z);
 277                 wI2.feedSignals(Bit.Z, Bit.X);
 278                 Simulation.TIMELINE.executeAll();
 279                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
 280
 281                 wI2.feedSignals(Bit.ZERO, Bit.Z);
 282                 Simulation.TIMELINE.executeAll();
 283                 assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
 284
 285                 wI2.feedSignals(Bit.Z, Bit.Z);
 286                 Simulation.TIMELINE.executeAll();
 287                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
 288
 289                 wI2.feedSignals(Bit.ONE, Bit.Z);
 290                 w.addObserver((i, oldValues) -> fail("WireArray notified observer, although value did not change."));
 291                 Simulation.TIMELINE.executeAll();
 292                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
 293         }
 294
 295 //      @Test
 296         void wireConnections()
 297         {
 298                 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
 299
 300                 Simulation.TIMELINE.reset();
 301
 302                 WireArray a = new WireArray(1, 2);
 303                 WireArray b = new WireArray(1, 2);
 304                 WireArray c = new WireArray(1, 2);
 305                 WireArrayEnd aI = a.createInput();
 306                 WireArrayEnd bI = b.createInput();
 307                 WireArrayEnd cI = c.createInput();
 308
 309                 TestBitDisplay test = new TestBitDisplay(c);
 310                 TestBitDisplay test2 = new TestBitDisplay(a);
 311                 LongConsumer print = time -> System.out.format("Time %2d\n   a: %s\n   b: %s\n   c: %s\n", time, a, b, c);
 312
 313                 cI.feedSignals(Bit.ONE);
 314                 test.assertAfterSimulationIs(print, Bit.ONE);
 315
 316                 cI.feedSignals(Bit.X);
 317                 test.assertAfterSimulationIs(print, Bit.X);
 318
 319                 cI.feedSignals(Bit.X);
 320                 cI.feedSignals(Bit.Z);
 321                 test.assertAfterSimulationIs(print, Bit.Z);
 322
 323                 new Connector(b, c);
 324                 test.assertAfterSimulationIs(print, Bit.Z);
 325                 System.err.println("ONE");
 326                 bI.feedSignals(Bit.ONE);
 327                 test.assertAfterSimulationIs(print, Bit.ONE);
 328                 System.err.println("ZERO");
 329                 bI.feedSignals(Bit.ZERO);
 330                 test.assertAfterSimulationIs(print, Bit.ZERO);
 331                 System.err.println("Z");
 332                 bI.feedSignals(Bit.Z);
 333                 test.assertAfterSimulationIs(print, Bit.Z);
 334
 335                 new Connector(a, b);
 336                 System.err.println("Z 2");
 337                 aI.feedSignals(Bit.Z);
 338                 test.assertAfterSimulationIs(print, Bit.Z);
 339                 test2.assertAfterSimulationIs(Bit.Z);
 340                 System.err.println("ONE 2");
 341                 aI.feedSignals(Bit.ONE);
 342                 test.assertAfterSimulationIs(print, Bit.ONE);
 343                 test2.assertAfterSimulationIs(Bit.ONE);
 344                 System.err.println("ZERO 2");
 345                 aI.feedSignals(Bit.ZERO);
 346                 test.assertAfterSimulationIs(print, Bit.ZERO);
 347                 test2.assertAfterSimulationIs(Bit.ZERO);
 348                 System.err.println("Z 2 II");
 349                 aI.feedSignals(Bit.Z);
 350                 test.assertAfterSimulationIs(print, Bit.Z);
 351                 test2.assertAfterSimulationIs(Bit.Z);
 352
 353                 System.err.println("No Conflict yet");
 354                 bI.feedSignals(Bit.ONE);
 355                 test.assertAfterSimulationIs(print, Bit.ONE);
 356                 test2.assertAfterSimulationIs(Bit.ONE);
 357                 aI.feedSignals(Bit.ONE);
 358                 test.assertAfterSimulationIs(print, Bit.ONE);
 359                 test2.assertAfterSimulationIs(Bit.ONE);
 360                 System.err.println("Conflict");
 361                 aI.feedSignals(Bit.ZERO);
 362                 test.assertAfterSimulationIs(print, Bit.X);
 363                 test2.assertAfterSimulationIs(Bit.X);
 364                 aI.feedSignals(Bit.ONE);
 365                 test.assertAfterSimulationIs(print, Bit.ONE);
 366                 test2.assertAfterSimulationIs(Bit.ONE);
 367         }
 368
 369         private static void assertBitArrayEquals(Bit[] actual, Bit... expected)
 370         {
 371                 assertArrayEquals(expected, actual);
 372         }
 373 }