1 package net.mograsim.logic.core.tests;
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3 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
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4 import static org.junit.jupiter.api.Assertions.assertEquals;
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5 import static org.junit.jupiter.api.Assertions.fail;
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7 import java.util.function.LongConsumer;
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9 import org.junit.jupiter.api.Test;
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11 import net.mograsim.logic.core.components.Connector;
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12 import net.mograsim.logic.core.components.Demux;
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13 import net.mograsim.logic.core.components.Merger;
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14 import net.mograsim.logic.core.components.Mux;
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15 import net.mograsim.logic.core.components.Splitter;
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16 import net.mograsim.logic.core.components.TriStateBuffer;
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17 import net.mograsim.logic.core.components.gates.AndGate;
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18 import net.mograsim.logic.core.components.gates.NandGate;
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19 import net.mograsim.logic.core.components.gates.NorGate;
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20 import net.mograsim.logic.core.components.gates.NotGate;
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21 import net.mograsim.logic.core.components.gates.OrGate;
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22 import net.mograsim.logic.core.components.gates.XorGate;
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23 import net.mograsim.logic.core.timeline.Timeline;
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24 import net.mograsim.logic.core.types.Bit;
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25 import net.mograsim.logic.core.types.BitVector;
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26 import net.mograsim.logic.core.wires.Wire;
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27 import net.mograsim.logic.core.wires.Wire.ReadEnd;
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28 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
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30 @SuppressWarnings("unused")
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33 private Timeline t = new Timeline(11);
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36 void circuitExampleTest()
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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),
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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),
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40 k = new Wire(t, 1, 1);
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41 new AndGate(t, 1, f.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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42 new NotGate(t, 1, f.createReadOnlyEnd(), g.createReadWriteEnd());
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43 new Merger(t, h.createReadWriteEnd(), c.createReadOnlyEnd(), g.createReadOnlyEnd());
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44 new Mux(t, 1, i.createReadWriteEnd(), e.createReadOnlyEnd(), h.createReadOnlyEnd(), d.createReadOnlyEnd());
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45 new Splitter(t, i.createReadOnlyEnd(), k.createReadWriteEnd(), j.createReadWriteEnd());
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47 a.createReadWriteEnd().feedSignals(Bit.ZERO);
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48 b.createReadWriteEnd().feedSignals(Bit.ONE);
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49 c.createReadWriteEnd().feedSignals(Bit.ZERO);
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50 d.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE);
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51 e.createReadWriteEnd().feedSignals(Bit.ZERO);
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55 assertEquals(Bit.ONE, j.getValue());
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56 assertEquals(Bit.ZERO, k.getValue());
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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);
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64 in.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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65 new Splitter(t, in.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(), c.createReadWriteEnd());
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69 assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
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70 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);
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71 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
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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);
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79 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
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80 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO);
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81 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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83 new Merger(t, out.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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87 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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91 void triStateBufferTest()
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93 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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94 new NotGate(t, 1, en.createReadOnlyEnd(), notEn.createReadWriteEnd());
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95 new TriStateBuffer(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd(), en.createReadOnlyEnd());
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96 new TriStateBuffer(t, 1, b.createReadOnlyEnd(), a.createReadWriteEnd(), notEn.createReadOnlyEnd());
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98 ReadWriteEnd enI = en.createReadWriteEnd(), aI = a.createReadWriteEnd(), bI = b.createReadWriteEnd();
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99 enI.feedSignals(Bit.ONE);
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100 aI.feedSignals(Bit.ONE);
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101 bI.feedSignals(Bit.Z);
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105 assertEquals(Bit.ONE, b.getValue());
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107 bI.feedSignals(Bit.ZERO);
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111 assertEquals(Bit.X, b.getValue());
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112 assertEquals(Bit.ONE, a.getValue());
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115 enI.feedSignals(Bit.ZERO);
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119 assertEquals(Bit.ZERO, a.getValue());
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127 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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128 ReadWriteEnd selectIn = select.createReadWriteEnd();
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130 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
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131 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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132 c.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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134 new Mux(t, 1, out.createReadWriteEnd(), select.createReadOnlyEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(),
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135 c.createReadOnlyEnd());
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138 assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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139 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
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142 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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144 selectIn.feedSignals(Bit.ONE, Bit.ONE);
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147 assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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155 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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156 ReadWriteEnd selectIn = select.createReadWriteEnd();
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158 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
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159 in.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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161 new Demux(t, 1, in.createReadOnlyEnd(), select.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(),
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162 c.createReadWriteEnd());
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165 assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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166 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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167 assertBitArrayEquals(c.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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168 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
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171 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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172 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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173 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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175 selectIn.feedSignals(Bit.ONE, Bit.ONE);
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178 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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179 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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180 assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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188 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
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189 new AndGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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190 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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191 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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195 assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
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202 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
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203 new OrGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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204 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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205 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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209 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
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216 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);
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217 new NandGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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218 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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219 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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220 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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224 assertBitArrayEquals(d.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ONE);
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231 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);
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232 new NorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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233 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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234 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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235 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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239 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ZERO, Bit.ONE, Bit.ZERO);
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246 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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247 new XorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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248 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
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249 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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250 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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254 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
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261 Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 2);
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262 new NotGate(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd());
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263 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
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267 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO, Bit.ZERO);
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271 void rsLatchCircuitTest()
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274 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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275 nq = new Wire(t, 1, 1);
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277 new OrGate(t, 1, t2.createReadWriteEnd(), r.createReadOnlyEnd(), nq.createReadOnlyEnd());
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278 new OrGate(t, 1, t1.createReadWriteEnd(), s.createReadOnlyEnd(), q.createReadOnlyEnd());
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279 new NotGate(t, 1, t2.createReadOnlyEnd(), q.createReadWriteEnd());
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280 new NotGate(t, 1, t1.createReadOnlyEnd(), nq.createReadWriteEnd());
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282 ReadWriteEnd sIn = s.createReadWriteEnd(), rIn = r.createReadWriteEnd();
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284 sIn.feedSignals(Bit.ONE);
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285 rIn.feedSignals(Bit.ZERO);
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289 assertEquals(Bit.ONE, q.getValue());
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290 assertEquals(Bit.ZERO, nq.getValue());
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292 sIn.feedSignals(Bit.ZERO);
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295 assertEquals(Bit.ONE, q.getValue());
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296 assertEquals(Bit.ZERO, nq.getValue());
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298 rIn.feedSignals(Bit.ONE);
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302 assertEquals(Bit.ZERO, q.getValue());
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303 assertEquals(Bit.ONE, nq.getValue());
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307 void numericValueTest()
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311 Wire a = new Wire(t, 4, 1);
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312 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
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316 assertEquals(15, a.getUnsignedValue());
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317 assertEquals(-1, a.getSignedValue());
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320 boolean flag = false;
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323 void simpleTimelineTest()
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325 Timeline t = new Timeline(3);
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330 fail("Events executed out of order!");
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336 fail("Events executed out of order!");
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342 fail("Events executed out of order!");
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347 fail("Only supposed to execute until timestamp 20, not 25");
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350 t.executeUntil(t.laterThan(20), 100);
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353 fail("Not all events were executed in order!");
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357 void multipleInputs()
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360 Wire w = new Wire(t, 2, 1);
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361 ReadWriteEnd wI1 = w.createReadWriteEnd(), wI2 = w.createReadWriteEnd();
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362 wI1.feedSignals(Bit.ONE, Bit.Z);
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363 wI2.feedSignals(Bit.Z, Bit.X);
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365 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
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367 wI2.feedSignals(Bit.ZERO, Bit.Z);
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369 assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
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371 wI2.feedSignals(Bit.Z, Bit.Z);
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373 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
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375 wI2.feedSignals(Bit.ONE, Bit.Z);
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376 ReadEnd rE = w.createReadOnlyEnd();
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377 rE.registerObserver((i) -> fail("WireEnd notified observer, although value did not change."));
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380 wI1.feedSignals(Bit.X, Bit.X);
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382 wI1.registerObserver((i) -> fail("WireEnd notified observer, although it was closed."));
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384 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
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388 void wireConnections()
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390 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
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394 Wire a = new Wire(t, 1, 2);
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395 Wire b = new Wire(t, 1, 2);
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396 Wire c = new Wire(t, 1, 2);
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397 ReadWriteEnd aI = a.createReadWriteEnd();
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398 ReadWriteEnd bI = b.createReadWriteEnd();
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399 ReadWriteEnd cI = c.createReadWriteEnd();
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401 TestBitDisplay test = new TestBitDisplay(t, c.createReadOnlyEnd());
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402 TestBitDisplay test2 = new TestBitDisplay(t, a.createReadOnlyEnd());
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403 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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405 cI.feedSignals(Bit.ONE);
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406 test.assertAfterSimulationIs(print, Bit.ONE);
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408 cI.feedSignals(Bit.X);
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409 test.assertAfterSimulationIs(print, Bit.X);
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411 cI.feedSignals(Bit.X);
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412 cI.feedSignals(Bit.Z);
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413 test.assertAfterSimulationIs(print, Bit.Z);
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415 new Connector(t, b.createReadWriteEnd(), c.createReadWriteEnd()).connect();
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416 test.assertAfterSimulationIs(print, Bit.Z);
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417 System.err.println("ONE");
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418 bI.feedSignals(Bit.ONE);
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419 test.assertAfterSimulationIs(print, Bit.ONE);
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420 System.err.println("ZERO");
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421 bI.feedSignals(Bit.ZERO);
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422 test.assertAfterSimulationIs(print, Bit.ZERO);
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423 System.err.println("Z");
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424 bI.feedSignals(Bit.Z);
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425 test.assertAfterSimulationIs(print, Bit.Z);
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427 new Connector(t, a.createReadWriteEnd(), b.createReadWriteEnd()).connect();
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428 System.err.println("Z 2");
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429 aI.feedSignals(Bit.Z);
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430 test.assertAfterSimulationIs(print, Bit.Z);
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431 test2.assertAfterSimulationIs(Bit.Z);
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432 System.err.println("ONE 2");
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433 aI.feedSignals(Bit.ONE);
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434 test.assertAfterSimulationIs(print, Bit.ONE);
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435 test2.assertAfterSimulationIs(Bit.ONE);
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436 System.err.println("ZERO 2");
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437 aI.feedSignals(Bit.ZERO);
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438 test.assertAfterSimulationIs(print, Bit.ZERO);
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439 test2.assertAfterSimulationIs(Bit.ZERO);
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440 System.err.println("Z 2 II");
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441 aI.feedSignals(Bit.Z);
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442 test.assertAfterSimulationIs(print, Bit.Z);
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443 test2.assertAfterSimulationIs(Bit.Z);
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445 System.err.println("No Conflict yet");
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446 bI.feedSignals(Bit.ONE);
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447 test.assertAfterSimulationIs(print, Bit.ONE);
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448 test2.assertAfterSimulationIs(Bit.ONE);
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449 aI.feedSignals(Bit.ONE);
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450 test.assertAfterSimulationIs(print, Bit.ONE);
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451 test2.assertAfterSimulationIs(Bit.ONE);
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452 System.err.println("Conflict");
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453 aI.feedSignals(Bit.ZERO);
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454 test.assertAfterSimulationIs(print, Bit.X);
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455 test2.assertAfterSimulationIs(Bit.X);
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456 aI.feedSignals(Bit.ONE);
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457 test.assertAfterSimulationIs(print, Bit.ONE);
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458 test2.assertAfterSimulationIs(Bit.ONE);
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461 private static void assertBitArrayEquals(BitVector actual, Bit... expected)
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463 assertArrayEquals(expected, actual.getBits());
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