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

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