1 package mograsim.logic.core.tests;
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3 import static org.junit.Assert.assertTrue;
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4 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
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5 import static org.junit.jupiter.api.Assertions.assertEquals;
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6 import static org.junit.jupiter.api.Assertions.fail;
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8 import java.util.function.LongConsumer;
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10 import org.junit.jupiter.api.Test;
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12 import mograsim.logic.core.components.Connector;
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13 import mograsim.logic.core.components.Demux;
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14 import mograsim.logic.core.components.Merger;
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15 import mograsim.logic.core.components.Mux;
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16 import mograsim.logic.core.components.Splitter;
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17 import mograsim.logic.core.components.TriStateBuffer;
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18 import mograsim.logic.core.components.gates.AndGate;
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19 import mograsim.logic.core.components.gates.NotGate;
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20 import mograsim.logic.core.components.gates.OrGate;
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21 import mograsim.logic.core.components.gates.XorGate;
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22 import mograsim.logic.core.timeline.Timeline;
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23 import mograsim.logic.core.types.Bit;
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24 import mograsim.logic.core.types.BitVector;
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25 import mograsim.logic.core.wires.Wire;
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26 import mograsim.logic.core.wires.Wire.ReadEnd;
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27 import mograsim.logic.core.wires.Wire.ReadWriteEnd;
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31 private Timeline t = new Timeline(11);
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34 void circuitExampleTest()
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36 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),
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37 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),
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38 k = new Wire(t, 1, 1);
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39 new AndGate(t, 1, f.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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40 new NotGate(t, 1, f.createReadOnlyEnd(), g.createReadWriteEnd());
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41 new Merger(t, h.createReadWriteEnd(), c.createReadOnlyEnd(), g.createReadOnlyEnd());
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42 new Mux(t, 1, i.createReadWriteEnd(), e.createReadOnlyEnd(), h.createReadOnlyEnd(), d.createReadOnlyEnd());
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43 new Splitter(t, i.createReadOnlyEnd(), k.createReadWriteEnd(), j.createReadWriteEnd());
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45 a.createReadWriteEnd().feedSignals(Bit.ZERO);
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46 b.createReadWriteEnd().feedSignals(Bit.ONE);
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47 c.createReadWriteEnd().feedSignals(Bit.ZERO);
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48 d.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE);
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49 e.createReadWriteEnd().feedSignals(Bit.ZERO);
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53 assertEquals(Bit.ONE, j.getValue());
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54 assertEquals(Bit.ZERO, k.getValue());
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61 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);
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62 in.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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63 new Splitter(t, in.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(), c.createReadWriteEnd());
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67 assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
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68 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);
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69 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
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76 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);
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77 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
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78 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO);
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79 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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81 new Merger(t, out.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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85 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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89 void triStateBufferTest()
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91 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);
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92 new NotGate(t, 1, en.createReadOnlyEnd(), notEn.createReadWriteEnd());
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93 new TriStateBuffer(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd(), en.createReadOnlyEnd());
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94 new TriStateBuffer(t, 1, b.createReadOnlyEnd(), a.createReadWriteEnd(), notEn.createReadOnlyEnd());
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96 ReadWriteEnd enI = en.createReadWriteEnd(), aI = a.createReadWriteEnd(), bI = b.createReadWriteEnd();
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97 enI.feedSignals(Bit.ONE);
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98 aI.feedSignals(Bit.ONE);
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99 bI.feedSignals(Bit.Z);
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103 assertEquals(Bit.ONE, b.getValue());
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105 bI.feedSignals(Bit.ZERO);
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109 assertEquals(Bit.X, b.getValue());
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110 assertEquals(Bit.ONE, a.getValue());
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113 enI.feedSignals(Bit.ZERO);
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117 assertEquals(Bit.ZERO, a.getValue());
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125 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);
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126 ReadWriteEnd selectIn = select.createReadWriteEnd();
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128 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
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129 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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130 c.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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132 new Mux(t, 1, out.createReadWriteEnd(), select.createReadOnlyEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(),
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133 c.createReadOnlyEnd());
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136 assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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137 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
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140 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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142 selectIn.feedSignals(Bit.ONE, Bit.ONE);
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145 assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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153 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);
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154 ReadWriteEnd selectIn = select.createReadWriteEnd();
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156 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
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157 in.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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159 new Demux(t, 1, in.createReadOnlyEnd(), select.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(),
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160 c.createReadWriteEnd());
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163 assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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164 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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165 assertBitArrayEquals(c.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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166 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
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169 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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170 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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171 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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173 selectIn.feedSignals(Bit.ONE, Bit.ONE);
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176 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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177 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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178 assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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186 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
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187 new AndGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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188 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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189 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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193 assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
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200 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
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201 new OrGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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202 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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203 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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207 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
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214 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);
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215 new XorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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216 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
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217 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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218 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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222 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
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229 Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 2);
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230 new NotGate(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd());
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231 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
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235 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO, Bit.ZERO);
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239 void rsLatchCircuitTest()
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242 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),
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243 nq = new Wire(t, 1, 1);
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245 new OrGate(t, 1, t2.createReadWriteEnd(), r.createReadOnlyEnd(), nq.createReadOnlyEnd());
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246 new OrGate(t, 1, t1.createReadWriteEnd(), s.createReadOnlyEnd(), q.createReadOnlyEnd());
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247 new NotGate(t, 1, t2.createReadOnlyEnd(), q.createReadWriteEnd());
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248 new NotGate(t, 1, t1.createReadOnlyEnd(), nq.createReadWriteEnd());
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250 ReadWriteEnd sIn = s.createReadWriteEnd(), rIn = r.createReadWriteEnd();
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252 sIn.feedSignals(Bit.ONE);
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253 rIn.feedSignals(Bit.ZERO);
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257 assertEquals(Bit.ONE, q.getValue());
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258 assertEquals(Bit.ZERO, nq.getValue());
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260 sIn.feedSignals(Bit.ZERO);
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263 assertEquals(Bit.ONE, q.getValue());
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264 assertEquals(Bit.ZERO, nq.getValue());
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266 rIn.feedSignals(Bit.ONE);
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270 assertEquals(Bit.ZERO, q.getValue());
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271 assertEquals(Bit.ONE, nq.getValue());
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275 void numericValueTest()
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279 Wire a = new Wire(t, 4, 1);
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280 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
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284 assertEquals(15, a.getUnsignedValue());
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285 assertEquals(-1, a.getSignedValue());
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288 boolean flag = false;
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291 void simpleTimelineTest()
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293 Timeline t = new Timeline(3);
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315 fail("Only supposed to execute until timestamp 20, not 25");
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318 t.executeUntil(t.laterThan(20), 100);
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325 void multipleInputs()
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328 Wire w = new Wire(t, 2, 1);
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329 ReadWriteEnd wI1 = w.createReadWriteEnd(), wI2 = w.createReadWriteEnd();
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330 wI1.feedSignals(Bit.ONE, Bit.Z);
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331 wI2.feedSignals(Bit.Z, Bit.X);
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333 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
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335 wI2.feedSignals(Bit.ZERO, Bit.Z);
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337 assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
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339 wI2.feedSignals(Bit.Z, Bit.Z);
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341 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
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343 wI2.feedSignals(Bit.ONE, Bit.Z);
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344 ReadEnd rE = w.createReadOnlyEnd();
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345 rE.addObserver((i, oldValues) -> fail("WireEnd notified observer, although value did not change."));
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348 wI1.feedSignals(Bit.X, Bit.X);
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350 wI1.addObserver((i, oldValues) -> fail("WireEnd notified observer, although it was closed."));
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352 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
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356 void wireConnections()
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358 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
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362 Wire a = new Wire(t, 1, 2);
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363 Wire b = new Wire(t, 1, 2);
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364 Wire c = new Wire(t, 1, 2);
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365 ReadWriteEnd aI = a.createReadWriteEnd();
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366 ReadWriteEnd bI = b.createReadWriteEnd();
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367 ReadWriteEnd cI = c.createReadWriteEnd();
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369 TestBitDisplay test = new TestBitDisplay(t, c.createReadOnlyEnd());
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370 TestBitDisplay test2 = new TestBitDisplay(t, a.createReadOnlyEnd());
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371 LongConsumer print = time -> System.out.format("Time %2d\n a: %s\n b: %s\n c: %s\n", time, a, b, c);
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373 cI.feedSignals(Bit.ONE);
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374 test.assertAfterSimulationIs(print, Bit.ONE);
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376 cI.feedSignals(Bit.X);
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377 test.assertAfterSimulationIs(print, Bit.X);
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379 cI.feedSignals(Bit.X);
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380 cI.feedSignals(Bit.Z);
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381 test.assertAfterSimulationIs(print, Bit.Z);
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383 new Connector(t, b.createReadWriteEnd(), c.createReadWriteEnd()).connect();
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384 test.assertAfterSimulationIs(print, Bit.Z);
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385 System.err.println("ONE");
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386 bI.feedSignals(Bit.ONE);
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387 test.assertAfterSimulationIs(print, Bit.ONE);
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388 System.err.println("ZERO");
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389 bI.feedSignals(Bit.ZERO);
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390 test.assertAfterSimulationIs(print, Bit.ZERO);
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391 System.err.println("Z");
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392 bI.feedSignals(Bit.Z);
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393 test.assertAfterSimulationIs(print, Bit.Z);
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395 new Connector(t, a.createReadWriteEnd(), b.createReadWriteEnd()).connect();
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396 System.err.println("Z 2");
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397 aI.feedSignals(Bit.Z);
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398 test.assertAfterSimulationIs(print, Bit.Z);
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399 test2.assertAfterSimulationIs(Bit.Z);
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400 System.err.println("ONE 2");
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401 aI.feedSignals(Bit.ONE);
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402 test.assertAfterSimulationIs(print, Bit.ONE);
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403 test2.assertAfterSimulationIs(Bit.ONE);
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404 System.err.println("ZERO 2");
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405 aI.feedSignals(Bit.ZERO);
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406 test.assertAfterSimulationIs(print, Bit.ZERO);
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407 test2.assertAfterSimulationIs(Bit.ZERO);
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408 System.err.println("Z 2 II");
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409 aI.feedSignals(Bit.Z);
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410 test.assertAfterSimulationIs(print, Bit.Z);
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411 test2.assertAfterSimulationIs(Bit.Z);
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413 System.err.println("No Conflict yet");
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414 bI.feedSignals(Bit.ONE);
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415 test.assertAfterSimulationIs(print, Bit.ONE);
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416 test2.assertAfterSimulationIs(Bit.ONE);
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417 aI.feedSignals(Bit.ONE);
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418 test.assertAfterSimulationIs(print, Bit.ONE);
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419 test2.assertAfterSimulationIs(Bit.ONE);
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420 System.err.println("Conflict");
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421 aI.feedSignals(Bit.ZERO);
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422 test.assertAfterSimulationIs(print, Bit.X);
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423 test2.assertAfterSimulationIs(Bit.X);
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424 aI.feedSignals(Bit.ONE);
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425 test.assertAfterSimulationIs(print, Bit.ONE);
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426 test2.assertAfterSimulationIs(Bit.ONE);
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429 private static void assertBitArrayEquals(BitVector actual, Bit... expected)
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431 assertArrayEquals(expected, actual.getBits());
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