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.Bit;\r
  11 import era.mi.logic.Simulation;\r
  12 import era.mi.logic.components.Merger;\r
  13 import era.mi.logic.components.Mux;\r
  14 import era.mi.logic.components.Splitter;\r
  15 import era.mi.logic.components.TriStateBuffer;\r
  16 import era.mi.logic.components.gates.AndGate;\r
  17 import era.mi.logic.components.gates.NotGate;\r
  18 import era.mi.logic.components.gates.OrGate;\r
  19 import era.mi.logic.wires.WireArray;\r
  20 import era.mi.logic.wires.WireArray.WireArrayInput;\r
  21 \r
  22 class ComponentTest\r
  23 {\r
  24     \r
  25         @Test\r
  26         void circuitExampleTest()\r
  27         {\r
  28                 Simulation.TIMELINE.reset();\r
  29                 WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), c = new WireArray(1, 10), d = new WireArray(2, 1), e = new WireArray(1, 1),\r
  30                                 f = new WireArray(1, 1), g = new WireArray(1, 1), h = new WireArray(2, 1), i = new WireArray(2, 1), j = new WireArray(1, 1), k = new WireArray(1, 1);\r
  31                 new AndGate(1, a, b, f);\r
  32                 new NotGate(1, f, g);\r
  33                 new Merger(h, c, g);\r
  34                 new Mux(1, i, e, h, d);\r
  35                 new Splitter(i, k, j);\r
  36                 \r
  37                 a.createInput().feedSignals(Bit.ZERO);\r
  38                 b.createInput().feedSignals(Bit.ONE);\r
  39                 c.createInput().feedSignals(Bit.ZERO);\r
  40                 d.createInput().feedSignals(Bit.ONE, Bit.ONE);\r
  41                 e.createInput().feedSignals(Bit.ZERO);\r
  42                 \r
  43                 Simulation.TIMELINE.executeAll();\r
  44                 \r
  45                 assertEquals(Bit.ONE, j.getValue());\r
  46                 assertEquals(Bit.ZERO, k.getValue());\r
  47         }\r
  48 \r
  49     @Test\r
  50     void splitterTest()\r
  51     {\r
  52         Simulation.TIMELINE.reset();\r
  53         WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), in = new WireArray(8, 1);\r
  54         in.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
  55         new Splitter(in, a, b, c);\r
  56 \r
  57         Simulation.TIMELINE.executeAll();\r
  58 \r
  59         assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);\r
  60         assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);\r
  61         assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);\r
  62     }\r
  63 \r
  64     @Test\r
  65     void mergerTest()\r
  66     {\r
  67         Simulation.TIMELINE.reset();\r
  68         WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), out = new WireArray(8, 1);\r
  69         a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);\r
  70         b.createInput().feedSignals(Bit.ONE, Bit.ZERO);\r
  71         c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);\r
  72 \r
  73         new Merger(out, a, b, c);\r
  74 \r
  75         Simulation.TIMELINE.executeAll();\r
  76 \r
  77         assertTrue(Arrays.equals(out.getValues(),\r
  78                 new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE }));\r
  79     }\r
  80 \r
  81     @Test\r
  82     void triStateBufferTest()\r
  83     {\r
  84         WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), en = new WireArray(1, 1),\r
  85                 notEn = new WireArray(1, 1);\r
  86         new NotGate(1, en, notEn);\r
  87         new TriStateBuffer(1, a, b, en);\r
  88         new TriStateBuffer(1, b, a, notEn);\r
  89 \r
  90         WireArrayInput enI = en.createInput(), aI = a.createInput(), bI = b.createInput();\r
  91         enI.feedSignals(Bit.ONE);\r
  92         aI.feedSignals(Bit.ONE);\r
  93 \r
  94         Simulation.TIMELINE.executeAll();\r
  95 \r
  96         assertEquals(Bit.ONE, b.getValue());\r
  97 \r
  98         bI.feedSignals(Bit.ZERO);\r
  99 \r
 100         Simulation.TIMELINE.executeAll();\r
 101 \r
 102         assertEquals(Bit.X, b.getValue());\r
 103         assertEquals(Bit.ONE, a.getValue());\r
 104 \r
 105         aI.clearSignals();\r
 106         enI.feedSignals(Bit.ZERO);\r
 107 \r
 108         Simulation.TIMELINE.executeAll();\r
 109 \r
 110         assertEquals(Bit.ZERO, a.getValue());\r
 111 \r
 112     }\r
 113 \r
 114     @Test\r
 115     void muxTest()\r
 116     {\r
 117         Simulation.TIMELINE.reset();\r
 118         WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4),\r
 119                 select = new WireArray(2, 5), out = new WireArray(4, 1);\r
 120         WireArrayInput selectIn = select.createInput();\r
 121 \r
 122         selectIn.feedSignals(Bit.ZERO, Bit.ZERO);\r
 123         a.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 124         c.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 125 \r
 126         new Mux(1, out, select, a, b, c);\r
 127         Simulation.TIMELINE.executeAll();\r
 128 \r
 129         assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);\r
 130         selectIn.feedSignals(Bit.ZERO, Bit.ONE);\r
 131         Simulation.TIMELINE.executeAll();\r
 132 \r
 133         assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 134 \r
 135         selectIn.feedSignals(Bit.ONE, Bit.ONE);\r
 136         Simulation.TIMELINE.executeAll();\r
 137 \r
 138         assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);\r
 139 \r
 140     }\r
 141 \r
 142     @Test\r
 143     void andTest()\r
 144     {\r
 145         Simulation.TIMELINE.reset();\r
 146         AndGate gate = new AndGate(1, new WireArray(4, 1), new WireArray(4, 1), new WireArray(4, 1));\r
 147         gate.getA().createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 148         gate.getB().createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 149 \r
 150         Simulation.TIMELINE.executeAll();\r
 151         assertBitArrayEquals(gate.getOut().getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 152     }\r
 153 \r
 154     @Test\r
 155     void orTest()\r
 156     {\r
 157         Simulation.TIMELINE.reset();\r
 158         OrGate gate = new OrGate(1, new WireArray(4, 1), new WireArray(4, 1), new WireArray(4, 1));\r
 159         gate.getA().createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);\r
 160         gate.getB().createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 161 \r
 162         Simulation.TIMELINE.executeAll();\r
 163 \r
 164         assertBitArrayEquals(gate.getOut().getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);\r
 165     }\r
 166 \r
 167     @Test\r
 168     void rsLatchCircuitTest()\r
 169     {\r
 170         Simulation.TIMELINE.reset();\r
 171         WireArray r = new WireArray(1, 1), s = new WireArray(1, 1), t1 = new WireArray(1, 15), t2 = new WireArray(1, 1),\r
 172                 q = new WireArray(1, 1), nq = new WireArray(1, 1);\r
 173 \r
 174         new OrGate(1, r, nq, t2);\r
 175         new OrGate(1, s, q, t1);\r
 176         new NotGate(1, t2, q);\r
 177         new NotGate(1, t1, nq);\r
 178 \r
 179         WireArrayInput sIn = s.createInput(), rIn = r.createInput();\r
 180 \r
 181         sIn.feedSignals(Bit.ONE);\r
 182         rIn.feedSignals(Bit.ZERO);\r
 183 \r
 184         Simulation.TIMELINE.executeAll();\r
 185 \r
 186         assertEquals(Bit.ONE, q.getValue());\r
 187         assertEquals(Bit.ZERO, nq.getValue());\r
 188 \r
 189         sIn.feedSignals(Bit.ZERO);\r
 190 \r
 191         Simulation.TIMELINE.executeAll();\r
 192         assertEquals(Bit.ONE, q.getValue());\r
 193         assertEquals(Bit.ZERO, nq.getValue());\r
 194 \r
 195         rIn.feedSignals(Bit.ONE);\r
 196 \r
 197         Simulation.TIMELINE.executeAll();\r
 198 \r
 199         assertEquals(Bit.ZERO, q.getValue());\r
 200         assertEquals(Bit.ONE, nq.getValue());\r
 201     }\r
 202 \r
 203     @Test\r
 204     void numericValueTest()\r
 205     {\r
 206         Simulation.TIMELINE.reset();\r
 207 \r
 208         WireArray a = new WireArray(4, 1);\r
 209         a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);\r
 210 \r
 211         Simulation.TIMELINE.executeAll();\r
 212 \r
 213         assertEquals(15, a.getUnsignedValue());\r
 214         assertEquals(-1, a.getSignedValue());\r
 215     }\r
 216 \r
 217     @Test\r
 218     void multipleInputs()\r
 219     {\r
 220         Simulation.TIMELINE.reset();\r
 221         WireArray w = new WireArray(2, 1);\r
 222         WireArrayInput wI1 = w.createInput(), wI2 = w.createInput();\r
 223         wI1.feedSignals(Bit.ONE, Bit.Z);\r
 224         wI2.feedSignals(Bit.Z, Bit.X);\r
 225         Simulation.TIMELINE.executeAll();\r
 226         assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);\r
 227 \r
 228         wI2.feedSignals(Bit.ZERO, Bit.Z);\r
 229         Simulation.TIMELINE.executeAll();\r
 230         assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);\r
 231 \r
 232         wI2.feedSignals(Bit.Z, Bit.Z);\r
 233         Simulation.TIMELINE.executeAll();\r
 234         assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);\r
 235 \r
 236         wI2.feedSignals(Bit.ONE, Bit.Z);\r
 237         w.addObserver((i) -> fail("WireArray notified observer, although value did not change."));\r
 238         Simulation.TIMELINE.executeAll();\r
 239         assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);\r
 240     }\r
 241 \r
 242         @Test\r
 243         void wireConnections()\r
 244         {\r
 245                 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde\r
 246                 \r
 247                 Simulation.TIMELINE.reset();\r
 248 \r
 249                 WireArray a = new WireArray(1, 2);\r
 250                 WireArray b = new WireArray(1, 2);\r
 251                 WireArray c = new WireArray(1, 2);\r
 252                 WireArrayInput aI = a.createInput();\r
 253                 WireArrayInput bI = b.createInput();\r
 254                 WireArrayInput cI = c.createInput();\r
 255 \r
 256                 TestBitDisplay test = new TestBitDisplay(c);\r
 257                 TestBitDisplay test2 = new TestBitDisplay(a);\r
 258                 LongConsumer print = time -> System.out.format("Time %2d\n   a: %s\n   b: %s\n   c: %s\n", time, a, b, c);\r
 259 \r
 260                 cI.feedSignals(Bit.ONE);\r
 261                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 262 \r
 263                 cI.feedSignals(Bit.X);\r
 264                 test.assertAfterSimulationIs(print, Bit.X);\r
 265 \r
 266                 cI.feedSignals(Bit.X);\r
 267                 cI.feedSignals(Bit.Z);\r
 268                 test.assertAfterSimulationIs(print, Bit.Z);\r
 269 \r
 270                 Connector c1 = new Connector(b, c);\r
 271                 test.assertAfterSimulationIs(print, Bit.Z);\r
 272                 System.err.println("ONE");\r
 273                 bI.feedSignals(Bit.ONE);\r
 274                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 275                 System.err.println("ZERO");\r
 276                 bI.feedSignals(Bit.ZERO);\r
 277                 test.assertAfterSimulationIs(print, Bit.ZERO);\r
 278                 System.err.println("Z");\r
 279                 bI.feedSignals(Bit.Z);\r
 280                 test.assertAfterSimulationIs(print, Bit.Z);\r
 281                 \r
 282                 Connector c2 = new Connector(a, b);\r
 283                 System.err.println("Z 2");\r
 284                 aI.feedSignals(Bit.Z);\r
 285                 test.assertAfterSimulationIs(print, Bit.Z);\r
 286                 test2.assertAfterSimulationIs(Bit.Z);\r
 287                 System.err.println("ONE 2");\r
 288                 aI.feedSignals(Bit.ONE);\r
 289                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 290                 test2.assertAfterSimulationIs(Bit.ONE);\r
 291                 System.err.println("ZERO 2");\r
 292                 aI.feedSignals(Bit.ZERO);\r
 293                 test.assertAfterSimulationIs(print, Bit.ZERO);\r
 294                 test2.assertAfterSimulationIs(Bit.ZERO);\r
 295                 System.err.println("Z 2 II");\r
 296                 aI.feedSignals(Bit.Z);\r
 297                 test.assertAfterSimulationIs(print, Bit.Z);\r
 298                 test2.assertAfterSimulationIs(Bit.Z);\r
 299                 \r
 300                 System.err.println("No Conflict yet");\r
 301                 bI.feedSignals(Bit.ONE);\r
 302                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 303                 test2.assertAfterSimulationIs(Bit.ONE);\r
 304                 aI.feedSignals(Bit.ONE);\r
 305                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 306                 test2.assertAfterSimulationIs(Bit.ONE);\r
 307                 System.err.println("Conflict");\r
 308                 aI.feedSignals(Bit.ZERO);\r
 309                 test.assertAfterSimulationIs(print, Bit.X);\r
 310                 test2.assertAfterSimulationIs(Bit.X);\r
 311                 aI.feedSignals(Bit.ONE);\r
 312                 test.assertAfterSimulationIs(print, Bit.ONE);\r
 313                 test2.assertAfterSimulationIs(Bit.ONE);\r
 314         }\r
 315 \r
 316     private static void assertBitArrayEquals(Bit[] actual, Bit... expected)\r
 317     {\r
 318         assertArrayEquals(expected, actual);\r
 319     }\r
 320 }\r