net.mograsim.logic.core/src/net/mograsim/logic/core/tests/ComponentTest.java

   1 package net.mograsim.logic.core.tests;\r
   2 \r
   3 import static org.junit.jupiter.api.Assertions.assertArrayEquals;\r
   4 import static org.junit.jupiter.api.Assertions.assertEquals;\r
   5 import static org.junit.jupiter.api.Assertions.fail;\r
   6 \r
   7 import java.util.function.LongConsumer;\r
   8 \r
   9 import org.junit.jupiter.api.Test;\r
  10 \r
  11 import net.mograsim.logic.core.components.Connector;\r
  12 import net.mograsim.logic.core.components.Demux;\r
  13 import net.mograsim.logic.core.components.Merger;\r
  14 import net.mograsim.logic.core.components.Mux;\r
  15 import net.mograsim.logic.core.components.Splitter;\r
  16 import net.mograsim.logic.core.components.TriStateBuffer;\r
  17 import net.mograsim.logic.core.components.gates.AndGate;\r
  18 import net.mograsim.logic.core.components.gates.NandGate;\r
  19 import net.mograsim.logic.core.components.gates.NorGate;\r
  20 import net.mograsim.logic.core.components.gates.NotGate;\r
  21 import net.mograsim.logic.core.components.gates.OrGate;\r
  22 import net.mograsim.logic.core.components.gates.XorGate;\r
  23 import net.mograsim.logic.core.timeline.Timeline;\r
  24 import net.mograsim.logic.core.types.Bit;\r
  25 import net.mograsim.logic.core.types.BitVector;\r
  26 import net.mograsim.logic.core.wires.Wire;\r
  27 import net.mograsim.logic.core.wires.Wire.ReadEnd;\r
  28 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;\r
  29 \r
  30 @SuppressWarnings("unused")\r
  31 class ComponentTest\r
  32 {\r
  33         private Timeline t = new Timeline(11);\r
  34 \r
  35         @Test\r
  36         void circuitExampleTest()\r
  37         {\r
  38                 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),\r
  39                                 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),\r
  40                                 k = new Wire(t, 1, 1);\r
  41                 new AndGate(t, 1, f.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());\r
  42                 new NotGate(t, 1, f.createReadOnlyEnd(), g.createReadWriteEnd());\r
  43                 new Merger(t, h.createReadWriteEnd(), c.createReadOnlyEnd(), g.createReadOnlyEnd());\r
  44                 new Mux(t, 1, i.createReadWriteEnd(), e.createReadOnlyEnd(), h.createReadOnlyEnd(), d.createReadOnlyEnd());\r
  45                 new Splitter(t, i.createReadOnlyEnd(), k.createReadWriteEnd(), j.createReadWriteEnd());\r
  46 \r
  47                 a.createReadWriteEnd().feedSignals(Bit.ZERO);\r
  48                 b.createReadWriteEnd().feedSignals(Bit.ONE);\r
  49                 c.createReadWriteEnd().feedSignals(Bit.ZERO);\r
  50                 d.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE);\r
  51                 e.createReadWriteEnd().feedSignals(Bit.ZERO);\r
  52 \r
  53                 t.executeAll();\r
  54 \r
  55                 assertEquals(Bit.ONE, j.getValue());\r
  56                 assertEquals(Bit.ZERO, k.getValue());\r
  57         }\r
  58 \r
  59         @Test\r
  60         void splitterTest()\r
  61         {\r
  62                 t.reset();\r
  63                 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);\r
  64                 in.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
  65                 new Splitter(t, in.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(), c.createReadWriteEnd());\r
  66 \r
  67                 t.executeAll();\r
  68 \r
  69                 assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);\r
  70                 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);\r
  71                 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);\r
  72         }\r
  73 \r
  74         @Test\r
  75         void mergerTest()\r
  76         {\r
  77                 t.reset();\r
  78                 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);\r
  79                 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);\r
  80                 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO);\r
  81                 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);\r
  82 \r
  83                 new Merger(t, out.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());\r
  84 \r
  85                 t.executeAll();\r
  86 \r
  87                 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
  88         }\r
  89 \r
  90         @Test\r
  91         void fusionTest()\r
  92         {\r
  93                 t.reset();\r
  94                 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);\r
  95                 Wire.fuse(a, out, 0, 0, a.length);\r
  96                 Wire.fuse(b, out, 0, a.length, b.length);\r
  97                 Wire.fuse(c, out, 0, a.length + b.length, c.length);\r
  98                 ReadWriteEnd rA = a.createReadWriteEnd();\r
  99                 rA.feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 100                 ReadWriteEnd rB = b.createReadWriteEnd();\r
 101                 rB.feedSignals(Bit.ONE, Bit.ZERO);\r
 102                 ReadWriteEnd rC = c.createReadWriteEnd();\r
 103                 rC.feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);\r
 104                 t.executeAll();\r
 105                 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 106                 out.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 107                 t.executeAll();\r
 108                 assertBitArrayEquals(rA.getValues(), Bit.X, Bit.X, Bit.X);\r
 109                 assertBitArrayEquals(rB.getValues(), Bit.X, Bit.X);\r
 110                 assertBitArrayEquals(rC.getValues(), Bit.X, Bit.X, Bit.X);\r
 111                 rA.clearSignals();\r
 112                 rB.clearSignals();\r
 113                 rC.clearSignals();\r
 114                 t.executeAll();\r
 115                 assertBitArrayEquals(rA.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);\r
 116                 assertBitArrayEquals(rB.getValues(), Bit.ZERO, Bit.ONE);\r
 117                 assertBitArrayEquals(rC.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 118         }\r
 119 \r
 120         @Test\r
 121         void triStateBufferTest()\r
 122         {\r
 123                 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);\r
 124                 new NotGate(t, 1, en.createReadOnlyEnd(), notEn.createReadWriteEnd());\r
 125                 new TriStateBuffer(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd(), en.createReadOnlyEnd());\r
 126                 new TriStateBuffer(t, 1, b.createReadOnlyEnd(), a.createReadWriteEnd(), notEn.createReadOnlyEnd());\r
 127 \r
 128                 ReadWriteEnd enI = en.createReadWriteEnd(), aI = a.createReadWriteEnd(), bI = b.createReadWriteEnd();\r
 129                 enI.feedSignals(Bit.ONE);\r
 130                 aI.feedSignals(Bit.ONE);\r
 131                 bI.feedSignals(Bit.Z);\r
 132 \r
 133                 t.executeAll();\r
 134 \r
 135                 assertEquals(Bit.ONE, b.getValue());\r
 136 \r
 137                 bI.feedSignals(Bit.ZERO);\r
 138 \r
 139                 t.executeAll();\r
 140 \r
 141                 assertEquals(Bit.X, b.getValue());\r
 142                 assertEquals(Bit.ONE, a.getValue());\r
 143 \r
 144                 aI.clearSignals();\r
 145                 enI.feedSignals(Bit.ZERO);\r
 146 \r
 147                 t.executeAll();\r
 148 \r
 149                 assertEquals(Bit.ZERO, a.getValue());\r
 150 \r
 151         }\r
 152 \r
 153         @Test\r
 154         void muxTest()\r
 155         {\r
 156                 t.reset();\r
 157                 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);\r
 158                 ReadWriteEnd selectIn = select.createReadWriteEnd();\r
 159 \r
 160                 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);\r
 161                 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 162                 c.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 163 \r
 164                 new Mux(t, 1, out.createReadWriteEnd(), select.createReadOnlyEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(),\r
 165                                 c.createReadOnlyEnd());\r
 166                 t.executeAll();\r
 167 \r
 168                 assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 169                 selectIn.feedSignals(Bit.ZERO, Bit.ONE);\r
 170                 t.executeAll();\r
 171 \r
 172                 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 173 \r
 174                 selectIn.feedSignals(Bit.ONE, Bit.ONE);\r
 175                 t.executeAll();\r
 176 \r
 177                 assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);\r
 178 \r
 179         }\r
 180 \r
 181         @Test\r
 182         void demuxTest()\r
 183         {\r
 184                 t.reset();\r
 185                 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);\r
 186                 ReadWriteEnd selectIn = select.createReadWriteEnd();\r
 187 \r
 188                 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);\r
 189                 in.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 190 \r
 191                 new Demux(t, 1, in.createReadOnlyEnd(), select.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(),\r
 192                                 c.createReadWriteEnd());\r
 193                 t.executeAll();\r
 194 \r
 195                 assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 196                 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);\r
 197                 assertBitArrayEquals(c.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);\r
 198                 selectIn.feedSignals(Bit.ZERO, Bit.ONE);\r
 199                 t.executeAll();\r
 200 \r
 201                 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);\r
 202                 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);\r
 203                 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 204 \r
 205                 selectIn.feedSignals(Bit.ONE, Bit.ONE);\r
 206                 t.executeAll();\r
 207 \r
 208                 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);\r
 209                 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);\r
 210                 assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);\r
 211 \r
 212         }\r
 213 \r
 214         @Test\r
 215         void andTest()\r
 216         {\r
 217                 t.reset();\r
 218                 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);\r
 219                 new AndGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());\r
 220                 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 221                 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 222 \r
 223                 t.executeAll();\r
 224 \r
 225                 assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 226         }\r
 227 \r
 228         @Test\r
 229         void orTest()\r
 230         {\r
 231                 t.reset();\r
 232                 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);\r
 233                 new OrGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());\r
 234                 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 235                 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 236 \r
 237                 t.executeAll();\r
 238 \r
 239                 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 240         }\r
 241 \r
 242         @Test\r
 243         void nandTest()\r
 244         {\r
 245                 t.reset();\r
 246                 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1), d = new Wire(t, 4, 1);\r
 247                 new NandGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());\r
 248                 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 249                 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 250                 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 251 \r
 252                 t.executeAll();\r
 253 \r
 254                 assertBitArrayEquals(d.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ONE);\r
 255         }\r
 256 \r
 257         @Test\r
 258         void norTest()\r
 259         {\r
 260                 t.reset();\r
 261                 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1), d = new Wire(t, 4, 1);\r
 262                 new NorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());\r
 263                 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 264                 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 265                 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 266 \r
 267                 t.executeAll();\r
 268 \r
 269                 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 270         }\r
 271 \r
 272         @Test\r
 273         void xorTest()\r
 274         {\r
 275                 t.reset();\r
 276                 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);\r
 277                 new XorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());\r
 278                 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);\r
 279                 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);\r
 280                 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);\r
 281 \r
 282                 t.executeAll();\r
 283 \r
 284                 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);\r
 285         }\r
 286 \r
 287         @Test\r
 288         void notTest()\r
 289         {\r
 290                 t.reset();\r
 291                 Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 2);\r
 292                 new NotGate(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd());\r
 293                 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);\r
 294 \r
 295                 t.executeAll();\r
 296 \r
 297                 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 298         }\r
 299 \r
 300         @Test\r
 301         void rsLatchCircuitTest()\r
 302         {\r
 303                 t.reset();\r
 304                 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),\r
 305                                 nq = new Wire(t, 1, 1);\r
 306 \r
 307                 new OrGate(t, 1, t2.createReadWriteEnd(), r.createReadOnlyEnd(), nq.createReadOnlyEnd());\r
 308                 new OrGate(t, 1, t1.createReadWriteEnd(), s.createReadOnlyEnd(), q.createReadOnlyEnd());\r
 309                 new NotGate(t, 1, t2.createReadOnlyEnd(), q.createReadWriteEnd());\r
 310                 new NotGate(t, 1, t1.createReadOnlyEnd(), nq.createReadWriteEnd());\r
 311 \r
 312                 ReadWriteEnd sIn = s.createReadWriteEnd(), rIn = r.createReadWriteEnd();\r
 313 \r
 314                 sIn.feedSignals(Bit.ONE);\r
 315                 rIn.feedSignals(Bit.ZERO);\r
 316 \r
 317                 t.executeAll();\r
 318 \r
 319                 assertEquals(Bit.ONE, q.getValue());\r
 320                 assertEquals(Bit.ZERO, nq.getValue());\r
 321 \r
 322                 sIn.feedSignals(Bit.ZERO);\r
 323 \r
 324                 t.executeAll();\r
 325                 assertEquals(Bit.ONE, q.getValue());\r
 326                 assertEquals(Bit.ZERO, nq.getValue());\r
 327 \r
 328                 rIn.feedSignals(Bit.ONE);\r
 329 \r
 330                 t.executeAll();\r
 331 \r
 332                 assertEquals(Bit.ZERO, q.getValue());\r
 333                 assertEquals(Bit.ONE, nq.getValue());\r
 334         }\r
 335 \r
 336         @Test\r
 337         void numericValueTest()\r
 338         {\r
 339                 t.reset();\r
 340 \r
 341                 Wire a = new Wire(t, 4, 1);\r
 342                 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);\r
 343 \r
 344                 t.executeAll();\r
 345 \r
 346                 assertEquals(15, a.getUnsignedValue());\r
 347                 assertEquals(-1, a.getSignedValue());\r
 348         }\r
 349 \r
 350         boolean flag = false;\r
 351 \r
 352         @Test\r
 353         void simpleTimelineTest()\r
 354         {\r
 355                 Timeline t = new Timeline(3);\r
 356                 flag = false;\r
 357                 t.addEvent((e) ->\r
 358                 {\r
 359                         if (!flag)\r
 360                                 fail("Events executed out of order!");\r
 361                         flag = false;\r
 362                 }, 15);\r
 363                 t.addEvent((e) ->\r
 364                 {\r
 365                         if (flag)\r
 366                                 fail("Events executed out of order!");\r
 367                         flag = true;\r
 368                 }, 10);\r
 369                 t.addEvent((e) ->\r
 370                 {\r
 371                         if (flag)\r
 372                                 fail("Events executed out of order!");\r
 373                         flag = true;\r
 374                 }, 20);\r
 375                 t.addEvent((e) ->\r
 376                 {\r
 377                         fail("Only supposed to execute until timestamp 20, not 25");\r
 378                 }, 25);\r
 379 \r
 380                 t.executeUntil(t.laterThan(20), 100);\r
 381 \r
 382                 if (!flag)\r
 383                         fail("Not all events were executed in order!");\r
 384         }\r
 385 \r
 386         @Test\r
 387         void multipleInputs()\r
 388         {\r
 389                 t.reset();\r
 390                 Wire w = new Wire(t, 2, 1);\r
 391                 ReadWriteEnd wI1 = w.createReadWriteEnd(), wI2 = w.createReadWriteEnd();\r
 392                 wI1.feedSignals(Bit.ONE, Bit.Z);\r
 393                 wI2.feedSignals(Bit.Z, Bit.X);\r
 394                 t.executeAll();\r
 395                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);\r
 396 \r
 397                 wI2.feedSignals(Bit.ZERO, Bit.Z);\r
 398                 t.executeAll();\r
 399                 assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);\r
 400 \r
 401                 wI2.feedSignals(Bit.Z, Bit.Z);\r
 402                 t.executeAll();\r
 403                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);\r
 404 \r
 405                 wI2.feedSignals(Bit.ONE, Bit.Z);\r
 406                 ReadEnd rE = w.createReadOnlyEnd();\r
 407                 rE.registerObserver((i) -> fail("WireEnd notified observer, although value did not change."));\r
 408                 t.executeAll();\r
 409                 rE.close();\r
 410                 wI1.feedSignals(Bit.X, Bit.X);\r
 411                 t.executeAll();\r
 412                 wI1.registerObserver((i) -> fail("WireEnd notified observer, although it was closed."));\r
 413                 wI1.close();\r
 414                 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);\r
 415         }\r
 416 \r
 417         @Test\r
 418         void wireConnections()\r
 419         {\r
 420                 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde\r
 421 \r
 422                 t.reset();\r
 423 \r
 424                 Wire a = new Wire(t, 1, 2);\r
 425                 Wire b = new Wire(t, 1, 2);\r
 426                 Wire c = new Wire(t, 1, 2);\r
 427                 ReadWriteEnd aI = a.createReadWriteEnd();\r
 428                 ReadWriteEnd bI = b.createReadWriteEnd();\r
 429                 ReadWriteEnd cI = c.createReadWriteEnd();\r
 430 \r
 431                 TestBitDisplay test = new TestBitDisplay(t, c.createReadOnlyEnd());\r
 432                 TestBitDisplay test2 = new TestBitDisplay(t, a.createReadOnlyEnd());\r
 433                 LongConsumer print = time -> System.out.format("Time %2d\n   a: %s\n   b: %s\n   c: %s\n", time, a, b, c);\r
 434 \r
 435                 cI.feedSignals(Bit.ONE);\r
 436                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 437 \r
 438                 cI.feedSignals(Bit.X);\r
 439                 test.assertAfterSimulationIs(print, Bit.X);\r
 440 \r
 441                 cI.feedSignals(Bit.X);\r
 442                 cI.feedSignals(Bit.Z);\r
 443                 test.assertAfterSimulationIs(print, Bit.Z);\r
 444 \r
 445                 new Connector(t, b.createReadWriteEnd(), c.createReadWriteEnd()).connect();\r
 446                 test.assertAfterSimulationIs(print, Bit.Z);\r
 447                 System.err.println("ONE");\r
 448                 bI.feedSignals(Bit.ONE);\r
 449                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 450                 System.err.println("ZERO");\r
 451                 bI.feedSignals(Bit.ZERO);\r
 452                 test.assertAfterSimulationIs(print, Bit.ZERO);\r
 453                 System.err.println("Z");\r
 454                 bI.feedSignals(Bit.Z);\r
 455                 test.assertAfterSimulationIs(print, Bit.Z);\r
 456 \r
 457                 new Connector(t, a.createReadWriteEnd(), b.createReadWriteEnd()).connect();\r
 458                 System.err.println("Z 2");\r
 459                 aI.feedSignals(Bit.Z);\r
 460                 test.assertAfterSimulationIs(print, Bit.Z);\r
 461                 test2.assertAfterSimulationIs(Bit.Z);\r
 462                 System.err.println("ONE 2");\r
 463                 aI.feedSignals(Bit.ONE);\r
 464                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 465                 test2.assertAfterSimulationIs(Bit.ONE);\r
 466                 System.err.println("ZERO 2");\r
 467                 aI.feedSignals(Bit.ZERO);\r
 468                 test.assertAfterSimulationIs(print, Bit.ZERO);\r
 469                 test2.assertAfterSimulationIs(Bit.ZERO);\r
 470                 System.err.println("Z 2 II");\r
 471                 aI.feedSignals(Bit.Z);\r
 472                 test.assertAfterSimulationIs(print, Bit.Z);\r
 473                 test2.assertAfterSimulationIs(Bit.Z);\r
 474 \r
 475                 System.err.println("No Conflict yet");\r
 476                 bI.feedSignals(Bit.ONE);\r
 477                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 478                 test2.assertAfterSimulationIs(Bit.ONE);\r
 479                 aI.feedSignals(Bit.ONE);\r
 480                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 481                 test2.assertAfterSimulationIs(Bit.ONE);\r
 482                 System.err.println("Conflict");\r
 483                 aI.feedSignals(Bit.ZERO);\r
 484                 test.assertAfterSimulationIs(print, Bit.X);\r
 485                 test2.assertAfterSimulationIs(Bit.X);\r
 486                 aI.feedSignals(Bit.ONE);\r
 487                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 488                 test2.assertAfterSimulationIs(Bit.ONE);\r
 489         }\r
 490 \r
 491         private static void assertBitArrayEquals(BitVector actual, Bit... expected)\r
 492         {\r
 493                 assertArrayEquals(expected, actual.getBits());\r
 494         }\r
 495 }\r