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.Wire;
  22 import era.mi.logic.wires.Wire.WireEnd;
  23
  24 class ComponentTest
  25 {
  26
  27         @Test
  28         void circuitExampleTest()
  29         {
  30                 Simulation.TIMELINE.reset();
  31                 Wire a = new Wire(1, 1), b = new Wire(1, 1), c = new Wire(1, 10), d = new Wire(2, 1),
  32                                 e = new Wire(1, 1), f = new Wire(1, 1), g = new Wire(1, 1), h = new Wire(2, 1), i = new Wire(2, 1),
  33                                 j = new Wire(1, 1), k = new Wire(1, 1);
  34                 new AndGate(1, f.createEnd(), a.createEnd(), b.createEnd());
  35                 new NotGate(1, f.createEnd(), g.createEnd());
  36                 new Merger(h.createEnd(), c.createEnd(), g.createEnd());
  37                 new Mux(1, i.createEnd(), e.createEnd(), h.createEnd(), d.createEnd());
  38                 new Splitter(i.createEnd(), k.createEnd(), j.createEnd());
  39
  40                 a.createEnd().feedSignals(Bit.ZERO);
  41                 b.createEnd().feedSignals(Bit.ONE);
  42                 c.createEnd().feedSignals(Bit.ZERO);
  43                 d.createEnd().feedSignals(Bit.ONE, Bit.ONE);
  44                 e.createEnd().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                 Wire a = new Wire(3, 1), b = new Wire(2, 1), c = new Wire(3, 1), in = new Wire(8, 1);
  57                 in.createEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
  58                 new Splitter(in.createEnd(), a.createEnd(), b.createEnd(), c.createEnd());
  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                 Wire a = new Wire(3, 1), b = new Wire(2, 1), c = new Wire(3, 1), out = new Wire(8, 1);
  72                 a.createEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
  73                 b.createEnd().feedSignals(Bit.ONE, Bit.ZERO);
  74                 c.createEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
  75
  76                 new Merger(out.createEnd(), a.createEnd(), b.createEnd(), c.createEnd());
  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                 Wire a = new Wire(1, 1), b = new Wire(1, 1), en = new Wire(1, 1), notEn = new Wire(1, 1);
  88                 new NotGate(1, en.createEnd(), notEn.createEnd());
  89                 new TriStateBuffer(1, a.createEnd(), b.createEnd(), en.createEnd());
  90                 new TriStateBuffer(1, b.createEnd(), a.createEnd(), notEn.createEnd());
  91
  92                 WireEnd enI = en.createEnd(), aI = a.createEnd(), bI = b.createEnd();
  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                 Wire a = new Wire(4, 3), b = new Wire(4, 6), c = new Wire(4, 4), select = new Wire(2, 5),
 121                                 out = new Wire(4, 1);
 122                 WireEnd selectIn = select.createEnd();
 123
 124                 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
 125                 a.createEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 126                 c.createEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
 127
 128                 new Mux(1, out.createEnd(), select.createEnd(), a.createEnd(), b.createEnd(), c.createEnd());
 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                 Wire a = new Wire(4, 3), b = new Wire(4, 6), c = new Wire(4, 4), select = new Wire(2, 5),
 149                                 in = new Wire(4, 1);
 150                 WireEnd selectIn = select.createEnd();
 151
 152                 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
 153                 in.createEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 154
 155                 new Demux(1, in.createEnd(), select.createEnd(), a.createEnd(), b.createEnd(), c.createEnd());
 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                 Wire a = new Wire(4, 1), b = new Wire(4, 3), c = new Wire(4, 1);
 182                 new AndGate(1, c.createEnd(), a.createEnd(), b.createEnd());
 183                 a.createEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
 184                 b.createEnd().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                 Wire a = new Wire(4, 1), b = new Wire(4, 3), c = new Wire(4, 1);
 196                 new OrGate(1, c.createEnd(), a.createEnd(), b.createEnd());
 197                 a.createEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
 198                 b.createEnd().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                 Wire a = new Wire(3, 1), b = new Wire(3, 2), c = new Wire(3, 1), d = new Wire(3, 1);
 210                 new XorGate(1, d.createEnd(), a.createEnd(), b.createEnd(), c.createEnd());
 211                 a.createEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
 212                 b.createEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
 213                 c.createEnd().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 notTest()
 222         {
 223                 Simulation.TIMELINE.reset();
 224                 Wire a = new Wire(3, 1), b = new Wire(3, 2);
 225                 new NotGate(1, a.createEnd(), b.createEnd());
 226                 a.createEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
 227
 228                 Simulation.TIMELINE.executeAll();
 229
 230                 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO, Bit.ZERO);
 231         }
 232
 233         @Test
 234         void rsLatchCircuitTest()
 235         {
 236                 Simulation.TIMELINE.reset();
 237                 Wire r = new Wire(1, 1), s = new Wire(1, 1), t1 = new Wire(1, 15), t2 = new Wire(1, 1),
 238                                 q = new Wire(1, 1), nq = new Wire(1, 1);
 239
 240                 new OrGate(1, t2.createEnd(), r.createEnd(), nq.createEnd());
 241                 new OrGate(1, t1.createEnd(), s.createEnd(), q.createEnd());
 242                 new NotGate(1, t2.createEnd(), q.createEnd());
 243                 new NotGate(1, t1.createEnd(), nq.createEnd());
 244
 245                 WireEnd sIn = s.createEnd(), rIn = r.createEnd();
 246
 247                 sIn.feedSignals(Bit.ONE);
 248                 rIn.feedSignals(Bit.ZERO);
 249
 250                 Simulation.TIMELINE.executeAll();
 251
 252                 assertEquals(Bit.ONE, q.getValue());
 253                 assertEquals(Bit.ZERO, nq.getValue());
 254
 255                 sIn.feedSignals(Bit.ZERO);
 256
 257                 Simulation.TIMELINE.executeAll();
 258                 assertEquals(Bit.ONE, q.getValue());
 259                 assertEquals(Bit.ZERO, nq.getValue());
 260
 261                 rIn.feedSignals(Bit.ONE);
 262
 263                 Simulation.TIMELINE.executeAll();
 264
 265                 assertEquals(Bit.ZERO, q.getValue());
 266                 assertEquals(Bit.ONE, nq.getValue());
 267         }
 268
 269         @Test
 270         void numericValueTest()
 271         {
 272                 Simulation.TIMELINE.reset();
 273
 274                 Wire a = new Wire(4, 1);
 275                 a.createEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
 276
 277                 Simulation.TIMELINE.executeAll();
 278
 279                 assertEquals(15, a.getUnsignedValue());
 280                 assertEquals(-1, a.getSignedValue());
 281         }
 282
 283         @Test
 284         void multipleInputs()
 285         {
 286                 Simulation.TIMELINE.reset();
 287                 Wire w = new Wire(2, 1);
 288                 WireEnd wI1 = w.createEnd(), wI2 = w.createEnd();
 289                 wI1.feedSignals(Bit.ONE, Bit.Z);
 290                 wI2.feedSignals(Bit.Z, Bit.X);
 291                 Simulation.TIMELINE.executeAll();
 292                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
 293
 294                 wI2.feedSignals(Bit.ZERO, Bit.Z);
 295                 Simulation.TIMELINE.executeAll();
 296                 assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
 297
 298                 wI2.feedSignals(Bit.Z, Bit.Z);
 299                 Simulation.TIMELINE.executeAll();
 300                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
 301
 302                 wI2.feedSignals(Bit.ONE, Bit.Z);
 303                 w.addObserver((i, oldValues) -> fail("WireArray notified observer, although value did not change."));
 304                 Simulation.TIMELINE.executeAll();
 305                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
 306         }
 307
 308 //      @Test
 309         void wireConnections()
 310         {
 311                 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
 312
 313                 Simulation.TIMELINE.reset();
 314
 315                 Wire a = new Wire(1, 2);
 316                 Wire b = new Wire(1, 2);
 317                 Wire c = new Wire(1, 2);
 318                 WireEnd aI = a.createEnd();
 319                 WireEnd bI = b.createEnd();
 320                 WireEnd cI = c.createEnd();
 321
 322                 TestBitDisplay test = new TestBitDisplay(c.createEnd());
 323                 TestBitDisplay test2 = new TestBitDisplay(a.createEnd());
 324                 LongConsumer print = time -> System.out.format("Time %2d\n   a: %s\n   b: %s\n   c: %s\n", time, a, b, c);
 325
 326                 cI.feedSignals(Bit.ONE);
 327                 test.assertAfterSimulationIs(print, Bit.ONE);
 328
 329                 cI.feedSignals(Bit.X);
 330                 test.assertAfterSimulationIs(print, Bit.X);
 331
 332                 cI.feedSignals(Bit.X);
 333                 cI.feedSignals(Bit.Z);
 334                 test.assertAfterSimulationIs(print, Bit.Z);
 335
 336                 new Connector(b, c);
 337                 test.assertAfterSimulationIs(print, Bit.Z);
 338                 System.err.println("ONE");
 339                 bI.feedSignals(Bit.ONE);
 340                 test.assertAfterSimulationIs(print, Bit.ONE);
 341                 System.err.println("ZERO");
 342                 bI.feedSignals(Bit.ZERO);
 343                 test.assertAfterSimulationIs(print, Bit.ZERO);
 344                 System.err.println("Z");
 345                 bI.feedSignals(Bit.Z);
 346                 test.assertAfterSimulationIs(print, Bit.Z);
 347
 348                 new Connector(a, b);
 349                 System.err.println("Z 2");
 350                 aI.feedSignals(Bit.Z);
 351                 test.assertAfterSimulationIs(print, Bit.Z);
 352                 test2.assertAfterSimulationIs(Bit.Z);
 353                 System.err.println("ONE 2");
 354                 aI.feedSignals(Bit.ONE);
 355                 test.assertAfterSimulationIs(print, Bit.ONE);
 356                 test2.assertAfterSimulationIs(Bit.ONE);
 357                 System.err.println("ZERO 2");
 358                 aI.feedSignals(Bit.ZERO);
 359                 test.assertAfterSimulationIs(print, Bit.ZERO);
 360                 test2.assertAfterSimulationIs(Bit.ZERO);
 361                 System.err.println("Z 2 II");
 362                 aI.feedSignals(Bit.Z);
 363                 test.assertAfterSimulationIs(print, Bit.Z);
 364                 test2.assertAfterSimulationIs(Bit.Z);
 365
 366                 System.err.println("No Conflict yet");
 367                 bI.feedSignals(Bit.ONE);
 368                 test.assertAfterSimulationIs(print, Bit.ONE);
 369                 test2.assertAfterSimulationIs(Bit.ONE);
 370                 aI.feedSignals(Bit.ONE);
 371                 test.assertAfterSimulationIs(print, Bit.ONE);
 372                 test2.assertAfterSimulationIs(Bit.ONE);
 373                 System.err.println("Conflict");
 374                 aI.feedSignals(Bit.ZERO);
 375                 test.assertAfterSimulationIs(print, Bit.X);
 376                 test2.assertAfterSimulationIs(Bit.X);
 377                 aI.feedSignals(Bit.ONE);
 378                 test.assertAfterSimulationIs(print, Bit.ONE);
 379                 test2.assertAfterSimulationIs(Bit.ONE);
 380         }
 381
 382         private static void assertBitArrayEquals(Bit[] actual, Bit... expected)
 383         {
 384                 assertArrayEquals(expected, actual);
 385         }
 386 }