Browse Source

test: add more stress tests and find the upper limits

feat-normalized-lcm
Dominique Merle 1 year ago
parent
commit
a9eba4d90c
  1. 231
      src/test/java/fr/mieuxvoter/mj/MajorityJudgmentDeliberatorTest.java

231
src/test/java/fr/mieuxvoter/mj/MajorityJudgmentDeliberatorTest.java

@ -195,24 +195,27 @@ class MajorityJudgmentDeliberatorTest {
@DisplayName("Test with a static default grade (\"worst grade\" == 0)")
public void testWithStaticDefaultGrade() {
DeliberatorInterface mj = new MajorityJudgmentDeliberator();
Long amountOfJudges = 3L;
Integer defaultGrade = 0;
TallyInterface tally = new TallyWithDefaultGrade(new ProposalTallyInterface[] {
new ProposalTally(new Integer[]{ 0, 0, 1 }),
new ProposalTally(new Integer[]{ 0, 3, 0 }),
}, 3L, defaultGrade);
new ProposalTally(new Integer[]{ 2, 0, 1 }),
}, amountOfJudges, defaultGrade);
ResultInterface result = mj.deliberate(tally);
assertNotNull(result);
assertEquals(2, result.getProposalResults().length);
assertEquals(3, result.getProposalResults().length);
assertEquals(2, result.getProposalResults()[0].getRank());
assertEquals(1, result.getProposalResults()[1].getRank());
assertEquals(2, result.getProposalResults()[2].getRank());
}
@Test
@DisplayName("Test static default grade with millions of proposals")
public void testStaticDefaultWithMillionsOfProposals() {
int amountOfProposals = 13375111;
@DisplayName("Test static default grade with thousands of proposals")
public void testStaticDefaultWithThousandsOfProposals() {
int amountOfProposals = 1337;
Integer amountOfJudges = 60000000;
Integer defaultGrade = 0;
DeliberatorInterface mj = new MajorityJudgmentDeliberator();
@ -231,6 +234,87 @@ class MajorityJudgmentDeliberatorTest {
}
}
// /!. This crashes
// @Test
// @DisplayName("Test static default grade with millions of proposals")
// public void testStaticDefaultWithMillionsOfProposals() {
// int amountOfProposals = 13375111;
// Integer amountOfJudges = 60000000;
// Integer defaultGrade = 0;
// DeliberatorInterface mj = new MajorityJudgmentDeliberator();
// ProposalTallyInterface[] tallies = new ProposalTallyInterface[amountOfProposals];
// for (int i = 0 ; i < amountOfProposals ; i++) {
// tallies[i] = new ProposalTally(new Integer[]{ 7, 204, 107 });
// }
// TallyInterface tally = new TallyWithDefaultGrade(tallies, amountOfJudges, defaultGrade);
//
// ResultInterface result = mj.deliberate(tally);
//
// assertNotNull(result);
// assertEquals(amountOfProposals, result.getProposalResults().length);
// for (int i = 0 ; i < amountOfProposals ; i++) {
// assertEquals(1, result.getProposalResults()[i].getRank());
// }
// }
@Test
@DisplayName("Test normalized tallies with thousands of (prime) proposals")
public void testNormalizedWithThousandsOfPrimeProposals() {
// We're using primes to test the upper bounds of our LCM shenanigans.
// This test takes a long time! (3 seconds)
// List<Integer> generatedPrimes = sieveOfEratosthenes(15000);
// System.out.println(generatedPrimes);
int amountOfProposals = primes.length; // 1437
DeliberatorInterface mj = new MajorityJudgmentDeliberator();
ProposalTallyInterface[] tallies = new ProposalTallyInterface[amountOfProposals];
for (int i = 0 ; i < amountOfProposals ; i++) {
Integer prime = primes[i % primes.length];
tallies[i] = new ProposalTally(new Integer[]{ prime-1, 1, 0 });
}
TallyInterface tally = new NormalizedTally(tallies);
ResultInterface result = mj.deliberate(tally);
assertNotNull(result);
assertEquals(amountOfProposals, result.getProposalResults().length);
for (int i = 0 ; i < amountOfProposals ; i++) {
assertEquals(
1 + (i % primes.length), result.getProposalResults()[i].getRank(),
"Rank of Proposal #" + i
);
}
}
@Test
@DisplayName("Test normalized tallies with thousands of proposals")
public void testNormalizedWithThousandsOfProposals() {
// This test is faster than the primes one (0.4 seconds),
// since primes are the worst case-scenario for our LCM.
int amountOfProposals = primes.length; // 1437
DeliberatorInterface mj = new MajorityJudgmentDeliberator();
ProposalTallyInterface[] tallies = new ProposalTallyInterface[amountOfProposals];
for (int i = 0 ; i < amountOfProposals ; i++) {
tallies[i] = new ProposalTally(new Integer[]{ i, 1, 0 });
}
TallyInterface tally = new NormalizedTally(tallies);
ResultInterface result = mj.deliberate(tally);
assertNotNull(result);
assertEquals(amountOfProposals, result.getProposalResults().length);
for (int i = 0 ; i < amountOfProposals ; i++) {
assertEquals(
1 + (i % primes.length), result.getProposalResults()[i].getRank(),
"Rank of Proposal #" + i
);
}
}
// @Test
// public void runBenchmarks() throws Exception {
// Options options = new OptionsBuilder()
@ -248,4 +332,141 @@ class MajorityJudgmentDeliberatorTest {
// new Runner(options).run();
// }
/**
* Helps us test extreme situations (upper bounds) in normalized tallies,
* since we use the LCM (Least Common Multiple) to avoid floating-point arithmetic.
*/
protected Integer[] primes = new Integer[] {
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59,
61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127,
131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199,
211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283,
293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383,
389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467,
479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577,
587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661,
673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769,
773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877,
881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983,
991, 997, 1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063,
1069, 1087, 1091, 1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151, 1153, 1163,
1171, 1181, 1187, 1193, 1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249, 1259,
1277, 1279, 1283, 1289, 1291, 1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361,
1367, 1373, 1381, 1399, 1409, 1423, 1427, 1429, 1433, 1439, 1447, 1451, 1453,
1459, 1471, 1481, 1483, 1487, 1489, 1493, 1499, 1511, 1523, 1531, 1543, 1549,
1553, 1559, 1567, 1571, 1579, 1583, 1597, 1601, 1607, 1609, 1613, 1619, 1621,
1627, 1637, 1657, 1663, 1667, 1669, 1693, 1697, 1699, 1709, 1721, 1723, 1733,
1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789, 1801, 1811, 1823, 1831, 1847,
1861, 1867, 1871, 1873, 1877, 1879, 1889, 1901, 1907, 1913, 1931, 1933, 1949,
1951, 1973, 1979, 1987, 1993, 1997, 1999, 2003, 2011, 2017, 2027, 2029, 2039,
2053, 2063, 2069, 2081, 2083, 2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137,
2141, 2143, 2153, 2161, 2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243, 2251,
2267, 2269, 2273, 2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339, 2341, 2347,
2351, 2357, 2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, 2417, 2423, 2437,
2441, 2447, 2459, 2467, 2473, 2477, 2503, 2521, 2531, 2539, 2543, 2549, 2551,
2557, 2579, 2591, 2593, 2609, 2617, 2621, 2633, 2647, 2657, 2659, 2663, 2671,
2677, 2683, 2687, 2689, 2693, 2699, 2707, 2711, 2713, 2719, 2729, 2731, 2741,
2749, 2753, 2767, 2777, 2789, 2791, 2797, 2801, 2803, 2819, 2833, 2837, 2843,
2851, 2857, 2861, 2879, 2887, 2897, 2903, 2909, 2917, 2927, 2939, 2953, 2957,
2963, 2969, 2971, 2999, 3001, 3011, 3019, 3023, 3037, 3041, 3049, 3061, 3067,
3079, 3083, 3089, 3109, 3119, 3121, 3137, 3163, 3167, 3169, 3181, 3187, 3191,
3203, 3209, 3217, 3221, 3229, 3251, 3253, 3257, 3259, 3271, 3299, 3301, 3307,
3313, 3319, 3323, 3329, 3331, 3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391,
3407, 3413, 3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511, 3517,
3527, 3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, 3593, 3607,
3613, 3617, 3623, 3631, 3637, 3643, 3659, 3671, 3673, 3677, 3691, 3697, 3701,
3709, 3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797, 3803, 3821,
3823, 3833, 3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907, 3911, 3917, 3919,
3923, 3929, 3931, 3943, 3947, 3967, 3989, 4001, 4003, 4007, 4013, 4019, 4021,
4027, 4049, 4051, 4057, 4073, 4079, 4091, 4093, 4099, 4111, 4127, 4129, 4133,
4139, 4153, 4157, 4159, 4177, 4201, 4211, 4217, 4219, 4229, 4231, 4241, 4243,
4253, 4259, 4261, 4271, 4273, 4283, 4289, 4297, 4327, 4337, 4339, 4349, 4357,
4363, 4373, 4391, 4397, 4409, 4421, 4423, 4441, 4447, 4451, 4457, 4463, 4481,
4483, 4493, 4507, 4513, 4517, 4519, 4523, 4547, 4549, 4561, 4567, 4583, 4591,
4597, 4603, 4621, 4637, 4639, 4643, 4649, 4651, 4657, 4663, 4673, 4679, 4691,
4703, 4721, 4723, 4729, 4733, 4751, 4759, 4783, 4787, 4789, 4793, 4799, 4801,
4813, 4817, 4831, 4861, 4871, 4877, 4889, 4903, 4909, 4919, 4931, 4933, 4937,
4943, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999,
5003, 5009, 5011, 5021, 5023, 5039, 5051, 5059, 5077, 5081, 5087, 5099, 5101,
5107, 5113, 5119, 5147, 5153, 5167, 5171, 5179, 5189, 5197, 5209, 5227, 5231,
5233, 5237, 5261, 5273, 5279, 5281, 5297, 5303, 5309, 5323, 5333, 5347, 5351,
5381, 5387, 5393, 5399, 5407, 5413, 5417, 5419, 5431, 5437, 5441, 5443, 5449,
5471, 5477, 5479, 5483, 5501, 5503, 5507, 5519, 5521, 5527, 5531, 5557, 5563,
5569, 5573, 5581, 5591, 5623, 5639, 5641, 5647, 5651, 5653, 5657, 5659, 5669,
5683, 5689, 5693, 5701, 5711, 5717, 5737, 5741, 5743, 5749, 5779, 5783, 5791,
5801, 5807, 5813, 5821, 5827, 5839, 5843, 5849, 5851, 5857, 5861, 5867, 5869,
5879, 5881, 5897, 5903, 5923, 5927, 5939, 5953, 5981, 5987, 6007, 6011, 6029,
6037, 6043, 6047, 6053, 6067, 6073, 6079, 6089, 6091, 6101, 6113, 6121, 6131,
6133, 6143, 6151, 6163, 6173, 6197, 6199, 6203, 6211, 6217, 6221, 6229, 6247,
6257, 6263, 6269, 6271, 6277, 6287, 6299, 6301, 6311, 6317, 6323, 6329, 6337,
6343, 6353, 6359, 6361, 6367, 6373, 6379, 6389, 6397, 6421, 6427, 6449, 6451,
6469, 6473, 6481, 6491, 6521, 6529, 6547, 6551, 6553, 6563, 6569, 6571, 6577,
6581, 6599, 6607, 6619, 6637, 6653, 6659, 6661, 6673, 6679, 6689, 6691, 6701,
6703, 6709, 6719, 6733, 6737, 6761, 6763, 6779, 6781, 6791, 6793, 6803, 6823,
6827, 6829, 6833, 6841, 6857, 6863, 6869, 6871, 6883, 6899, 6907, 6911, 6917,
6947, 6949, 6959, 6961, 6967, 6971, 6977, 6983, 6991, 6997, 7001, 7013, 7019,
7027, 7039, 7043, 7057, 7069, 7079, 7103, 7109, 7121, 7127, 7129, 7151, 7159,
7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229, 7237, 7243, 7247, 7253, 7283,
7297, 7307, 7309, 7321, 7331, 7333, 7349, 7351, 7369, 7393, 7411, 7417, 7433,
7451, 7457, 7459, 7477, 7481, 7487, 7489, 7499, 7507, 7517, 7523, 7529, 7537,
7541, 7547, 7549, 7559, 7561, 7573, 7577, 7583, 7589, 7591, 7603, 7607, 7621,
7639, 7643, 7649, 7669, 7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723, 7727,
7741, 7753, 7757, 7759, 7789, 7793, 7817, 7823, 7829, 7841, 7853, 7867, 7873,
7877, 7879, 7883, 7901, 7907, 7919, 7927, 7933, 7937, 7949, 7951, 7963, 7993,
8009, 8011, 8017, 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111,
8117, 8123, 8147, 8161, 8167, 8171, 8179, 8191, 8209, 8219, 8221, 8231, 8233,
8237, 8243, 8263, 8269, 8273, 8287, 8291, 8293, 8297, 8311, 8317, 8329, 8353,
8363, 8369, 8377, 8387, 8389, 8419, 8423, 8429, 8431, 8443, 8447, 8461, 8467,
8501, 8513, 8521, 8527, 8537, 8539, 8543, 8563, 8573, 8581, 8597, 8599, 8609,
8623, 8627, 8629, 8641, 8647, 8663, 8669, 8677, 8681, 8689, 8693, 8699, 8707,
8713, 8719, 8731, 8737, 8741, 8747, 8753, 8761, 8779, 8783, 8803, 8807, 8819,
8821, 8831, 8837, 8839, 8849, 8861, 8863, 8867, 8887, 8893, 8923, 8929, 8933,
8941, 8951, 8963, 8969, 8971, 8999, 9001, 9007, 9011, 9013, 9029, 9041, 9043,
9049, 9059, 9067, 9091, 9103, 9109, 9127, 9133, 9137, 9151, 9157, 9161, 9173,
9181, 9187, 9199, 9203, 9209, 9221, 9227, 9239, 9241, 9257, 9277, 9281, 9283,
9293, 9311, 9319, 9323, 9337, 9341, 9343, 9349, 9371, 9377, 9391, 9397, 9403,
9413, 9419, 9421, 9431, 9433, 9437, 9439, 9461, 9463, 9467, 9473, 9479, 9491,
9497, 9511, 9521, 9533, 9539, 9547, 9551, 9587, 9601, 9613, 9619, 9623, 9629,
9631, 9643, 9649, 9661, 9677, 9679, 9689, 9697, 9719, 9721, 9733, 9739, 9743,
9749, 9767, 9769, 9781, 9787, 9791, 9803, 9811, 9817, 9829, 9833, 9839, 9851,
9857, 9859, 9871, 9883, 9887, 9901, 9907, 9923, 9929, 9931, 9941, 9949, 9967,
9973, 10007, 10009, 10037, 10039, 10061, 10067, 10069, 10079, 10091, 10093,
10099, 10103, 10111, 10133, 10139, 10141, 10151, 10159, 10163, 10169, 10177,
10181, 10193, 10211, 10223, 10243, 10247, 10253, 10259, 10267, 10271, 10273,
10289, 10301, 10303, 10313, 10321, 10331, 10333, 10337, 10343, 10357, 10369,
10391, 10399, 10427, 10429, 10433, 10453, 10457, 10459, 10463, 10477, 10487,
10499, 10501, 10513, 10529, 10531, 10559, 10567, 10589, 10597, 10601, 10607,
10613, 10627, 10631, 10639, 10651, 10657, 10663, 10667, 10687, 10691, 10709,
10711, 10723, 10729, 10733, 10739, 10753, 10771, 10781, 10789, 10799, 10831,
10837, 10847, 10853, 10859, 10861, 10867, 10883, 10889, 10891, 10903, 10909,
10937, 10939, 10949, 10957, 10973, 10979, 10987, 10993, 11003, 11027, 11047,
11057, 11059, 11069, 11071, 11083, 11087, 11093, 11113, 11117, 11119, 11131,
11149, 11159, 11161, 11171, 11173, 11177, 11197, 11213, 11239, 11243, 11251,
11257, 11261, 11273, 11279, 11287, 11299, 11311, 11317, 11321, 11329, 11351,
11353, 11369, 11383, 11393, 11399, 11411, 11423, 11437, 11443, 11447, 11467,
11471, 11483, 11489, 11491, 11497, 11503, 11519, 11527, 11549, 11551, 11579,
11587, 11593, 11597, 11617, 11621, 11633, 11657, 11677, 11681, 11689, 11699,
11701, 11717, 11719, 11731, 11743, 11777, 11779, 11783, 11789, 11801, 11807,
11813, 11821, 11827, 11831, 11833, 11839, 11863, 11867, 11887, 11897, 11903,
11909, 11923, 11927, 11933, 11939, 11941, 11953, 11959, 11969, 11971, 11981
};
// public static List<Integer> sieveOfEratosthenes(int n) {
// boolean prime[] = new boolean[n + 1];
// Arrays.fill(prime, true);
// for (int p = 2; p * p <= n; p++) {
// if (prime[p]) {
// for (int i = p * 2; i <= n; i += p) {
// prime[i] = false;
// }
// }
// }
// List<Integer> primeNumbers = new LinkedList<>();
// for (int i = 2; i <= n; i++) {
// if (prime[i]) {
// primeNumbers.add(i);
// }
// }
// return primeNumbers;
// }
}
Loading…
Cancel
Save