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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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);
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95 Wire.fuse(a, out, 0, 0, a.length);
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96 Wire.fuse(b, out, 0, a.length, b.length);
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97 Wire.fuse(c, out, 0, a.length + b.length, c.length);
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98 ReadWriteEnd rA = a.createReadWriteEnd();
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99 rA.feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
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100 ReadWriteEnd rB = b.createReadWriteEnd();
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101 rB.feedSignals(Bit.ONE, Bit.ZERO);
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102 ReadWriteEnd rC = c.createReadWriteEnd();
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103 rC.feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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105 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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106 out.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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108 assertBitArrayEquals(rA.getValues(), Bit.X, Bit.X, Bit.X);
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109 assertBitArrayEquals(rB.getValues(), Bit.X, Bit.X);
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110 assertBitArrayEquals(rC.getValues(), Bit.X, Bit.X, Bit.X);
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115 assertBitArrayEquals(rA.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
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116 assertBitArrayEquals(rB.getValues(), Bit.ZERO, Bit.ONE);
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117 assertBitArrayEquals(rC.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
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124 Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 1);
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126 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.U, Bit.Z);
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128 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.U, Bit.Z);
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132 void triStateBufferTest()
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134 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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135 new NotGate(t, 1, en.createReadOnlyEnd(), notEn.createReadWriteEnd());
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136 new TriStateBuffer(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd(), en.createReadOnlyEnd());
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137 new TriStateBuffer(t, 1, b.createReadOnlyEnd(), a.createReadWriteEnd(), notEn.createReadOnlyEnd());
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139 ReadWriteEnd enI = en.createReadWriteEnd(), aI = a.createReadWriteEnd(), bI = b.createReadWriteEnd();
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140 enI.feedSignals(Bit.ONE);
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141 aI.feedSignals(Bit.ONE);
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142 bI.feedSignals(Bit.Z);
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146 assertEquals(Bit.ONE, b.getValue());
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148 bI.feedSignals(Bit.ZERO);
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152 assertEquals(Bit.X, b.getValue());
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153 assertEquals(Bit.ONE, a.getValue());
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156 enI.feedSignals(Bit.ZERO);
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160 assertEquals(Bit.ZERO, a.getValue());
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168 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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169 ReadWriteEnd selectIn = select.createReadWriteEnd();
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171 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
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172 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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173 c.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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175 new Mux(t, 1, out.createReadWriteEnd(), select.createReadOnlyEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(),
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176 c.createReadOnlyEnd());
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179 assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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180 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
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183 assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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185 selectIn.feedSignals(Bit.ONE, Bit.ONE);
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188 assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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196 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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197 ReadWriteEnd selectIn = select.createReadWriteEnd();
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199 selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
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200 in.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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202 new Demux(t, 1, in.createReadOnlyEnd(), select.createReadOnlyEnd(), a.createReadWriteEnd(), b.createReadWriteEnd(),
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203 c.createReadWriteEnd());
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206 assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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207 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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208 assertBitArrayEquals(c.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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209 selectIn.feedSignals(Bit.ZERO, Bit.ONE);
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212 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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213 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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214 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
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216 selectIn.feedSignals(Bit.ONE, Bit.ONE);
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219 assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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220 assertBitArrayEquals(b.getValues(), Bit.U, Bit.U, Bit.U, Bit.U);
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221 assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
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229 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
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230 new AndGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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231 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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232 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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236 assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
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243 Wire a = new Wire(t, 4, 1), b = new Wire(t, 4, 3), c = new Wire(t, 4, 1);
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244 new OrGate(t, 1, c.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd());
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245 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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246 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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250 assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
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257 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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258 new NandGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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259 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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260 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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261 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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265 assertBitArrayEquals(d.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ONE);
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272 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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273 new NorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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274 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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275 b.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
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276 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
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280 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ZERO, Bit.ONE, Bit.ZERO);
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287 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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288 new XorGate(t, 1, d.createReadWriteEnd(), a.createReadOnlyEnd(), b.createReadOnlyEnd(), c.createReadOnlyEnd());
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289 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
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290 b.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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291 c.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
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295 assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
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302 Wire a = new Wire(t, 3, 1), b = new Wire(t, 3, 2);
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303 new NotGate(t, 1, a.createReadOnlyEnd(), b.createReadWriteEnd());
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304 a.createReadWriteEnd().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
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308 assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO, Bit.ZERO);
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312 void rsLatchCircuitTest()
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315 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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316 nq = new Wire(t, 1, 1);
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318 new OrGate(t, 1, t2.createReadWriteEnd(), r.createReadOnlyEnd(), nq.createReadOnlyEnd());
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319 new OrGate(t, 1, t1.createReadWriteEnd(), s.createReadOnlyEnd(), q.createReadOnlyEnd());
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320 new NotGate(t, 1, t2.createReadOnlyEnd(), q.createReadWriteEnd());
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321 new NotGate(t, 1, t1.createReadOnlyEnd(), nq.createReadWriteEnd());
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323 ReadWriteEnd sIn = s.createReadWriteEnd(), rIn = r.createReadWriteEnd();
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325 sIn.feedSignals(Bit.ONE);
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326 rIn.feedSignals(Bit.ZERO);
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330 assertEquals(Bit.ONE, q.getValue());
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331 assertEquals(Bit.ZERO, nq.getValue());
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333 sIn.feedSignals(Bit.ZERO);
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336 assertEquals(Bit.ONE, q.getValue());
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337 assertEquals(Bit.ZERO, nq.getValue());
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339 rIn.feedSignals(Bit.ONE);
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343 assertEquals(Bit.ZERO, q.getValue());
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344 assertEquals(Bit.ONE, nq.getValue());
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348 void numericValueTest()
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352 Wire a = new Wire(t, 4, 1);
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353 a.createReadWriteEnd().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
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357 assertEquals(15, a.getUnsignedValue());
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358 assertEquals(-1, a.getSignedValue());
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361 boolean flag = false;
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364 void simpleTimelineTest()
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366 Timeline t = new Timeline(3);
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371 fail("Events executed out of order!");
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377 fail("Events executed out of order!");
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383 fail("Events executed out of order!");
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388 fail("Only supposed to execute until timestamp 20, not 25");
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391 t.executeUntil(t.laterThan(20), 100);
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394 fail("Not all events were executed in order!");
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398 void multipleInputs()
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401 Wire w = new Wire(t, 2, 1);
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402 ReadWriteEnd wI1 = w.createReadWriteEnd(), wI2 = w.createReadWriteEnd();
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403 wI1.feedSignals(Bit.ONE, Bit.Z);
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404 wI2.feedSignals(Bit.Z, Bit.X);
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406 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
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408 wI2.feedSignals(Bit.ZERO, Bit.Z);
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410 assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
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412 wI2.feedSignals(Bit.Z, Bit.Z);
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414 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
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416 wI2.feedSignals(Bit.ONE, Bit.Z);
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417 ReadEnd rE = w.createReadOnlyEnd();
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418 rE.registerObserver((i) -> fail("WireEnd notified observer, although value did not change."));
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421 wI1.feedSignals(Bit.X, Bit.X);
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423 wI1.registerObserver((i) -> fail("WireEnd notified observer, although it was closed."));
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425 assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
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429 void wireConnections()
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431 // Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
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435 Wire a = new Wire(t, 1, 2);
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436 Wire b = new Wire(t, 1, 2);
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437 Wire c = new Wire(t, 1, 2);
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438 ReadWriteEnd aI = a.createReadWriteEnd();
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439 ReadWriteEnd bI = b.createReadWriteEnd();
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440 ReadWriteEnd cI = c.createReadWriteEnd();
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442 TestBitDisplay test = new TestBitDisplay(t, c.createReadOnlyEnd());
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443 TestBitDisplay test2 = new TestBitDisplay(t, a.createReadOnlyEnd());
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444 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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446 cI.feedSignals(Bit.ONE);
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447 test.assertAfterSimulationIs(print, Bit.ONE);
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449 cI.feedSignals(Bit.X);
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450 test.assertAfterSimulationIs(print, Bit.X);
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452 cI.feedSignals(Bit.X);
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453 cI.feedSignals(Bit.Z);
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454 test.assertAfterSimulationIs(print, Bit.Z);
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456 new Connector(t, b.createReadWriteEnd(), c.createReadWriteEnd()).connect();
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457 test.assertAfterSimulationIs(print, Bit.Z);
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458 System.err.println("ONE");
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459 bI.feedSignals(Bit.ONE);
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460 test.assertAfterSimulationIs(print, Bit.ONE);
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461 System.err.println("ZERO");
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462 bI.feedSignals(Bit.ZERO);
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463 test.assertAfterSimulationIs(print, Bit.ZERO);
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464 System.err.println("Z");
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465 bI.feedSignals(Bit.Z);
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466 test.assertAfterSimulationIs(print, Bit.Z);
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468 new Connector(t, a.createReadWriteEnd(), b.createReadWriteEnd()).connect();
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469 System.err.println("Z 2");
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470 aI.feedSignals(Bit.Z);
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471 test.assertAfterSimulationIs(print, Bit.Z);
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472 test2.assertAfterSimulationIs(Bit.Z);
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473 System.err.println("ONE 2");
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474 aI.feedSignals(Bit.ONE);
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475 test.assertAfterSimulationIs(print, Bit.ONE);
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476 test2.assertAfterSimulationIs(Bit.ONE);
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477 System.err.println("ZERO 2");
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478 aI.feedSignals(Bit.ZERO);
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479 test.assertAfterSimulationIs(print, Bit.ZERO);
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480 test2.assertAfterSimulationIs(Bit.ZERO);
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481 System.err.println("Z 2 II");
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482 aI.feedSignals(Bit.Z);
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483 test.assertAfterSimulationIs(print, Bit.Z);
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484 test2.assertAfterSimulationIs(Bit.Z);
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486 System.err.println("No Conflict yet");
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487 bI.feedSignals(Bit.ONE);
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488 test.assertAfterSimulationIs(print, Bit.ONE);
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489 test2.assertAfterSimulationIs(Bit.ONE);
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490 aI.feedSignals(Bit.ONE);
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491 test.assertAfterSimulationIs(print, Bit.ONE);
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492 test2.assertAfterSimulationIs(Bit.ONE);
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493 System.err.println("Conflict");
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494 aI.feedSignals(Bit.ZERO);
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495 test.assertAfterSimulationIs(print, Bit.X);
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496 test2.assertAfterSimulationIs(Bit.X);
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497 aI.feedSignals(Bit.ONE);
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498 test.assertAfterSimulationIs(print, Bit.ONE);
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499 test2.assertAfterSimulationIs(Bit.ONE);
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502 private static void assertBitArrayEquals(BitVector actual, Bit... expected)
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504 assertArrayEquals(expected, actual.getBits());
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