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Bring back old semantics to random and randomSeed, add secureRandom (#…
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#include <BSTest.h> | ||
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BS_ENV_DECLARE(); | ||
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void setup() | ||
{ | ||
Serial.begin(115200); | ||
BS_RUN(Serial); | ||
} | ||
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TEST_CASE("If randomSeed is not called, random() uses hardware PRNG", "[random]") | ||
{ | ||
int32_t data[32]; | ||
srand(10); | ||
for (int i = 0; i < sizeof(data)/sizeof(data[0]); ++i) { | ||
data[i] = random(0x7fffffff); | ||
} | ||
srand(10); | ||
for (int i = 0; i < sizeof(data)/sizeof(data[0]); ++i) { | ||
CHECK(random(0x7fffffff) != data[i]); | ||
} | ||
} | ||
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TEST_CASE("If randomSeed is called, we get same random sequence every time", "[random]") | ||
{ | ||
const int32_t reference_sequence[] = { | ||
2104627054, 2013331137, 258660947, 107061148, | ||
317460219, 663931879, 307161078, 1718702872, | ||
1306951058, 1066376876, 624381721, 850811527, | ||
329784053, 726742932, 182903521, 787925035, | ||
1364123723, 198878220, 1117075042, 1108236242, | ||
1775000610, 500470195, 896676389, 6341838, | ||
785214762, 1084946248, 1601419914, 2058135092, | ||
1671754873, 1952290050, 1572975837, 1596343802, | ||
240941423, 1843946550, 793779187, 441773333, | ||
884819086, 590861527, 1676358848, 2132930493, | ||
969627641, 930717537, 195748182, 2064531490, | ||
1195920216, 347502525, 584628940, 1938341337, | ||
642503024, 915004020, 2034338438, 1690522669, | ||
1805037441, 1904039418, 1491310300, 227517325, | ||
17943876, 570537582, 1409581066, 1819703730, | ||
730240988, 786466794, 1411137128, 1680096093, | ||
}; | ||
randomSeed(42); | ||
for (int i = 0; i < sizeof(reference_sequence)/sizeof(reference_sequence[0]); ++i) { | ||
CHECK(random(0x7fffffff) == reference_sequence[i]); | ||
} | ||
} | ||
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void loop() {} |