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Add FastRandomContext::rand256() and ::randbytes()

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FastRandomContext now provides all functionality that the real Rand* functions
provide.
This commit is contained in:
Pieter Wuille
2017-05-02 11:04:31 -07:00
parent 9fec4da0be
commit 37e864eb9f
3 changed files with 33 additions and 0 deletions
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7
src/test/random_tests.cpp
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@@ -25,14 +25,21 @@ BOOST_AUTO_TEST_CASE(fastrandom_tests)
BOOST_CHECK_EQUAL(ctx1.rand32(), ctx2.rand32());
BOOST_CHECK_EQUAL(ctx1.rand64(), ctx2.rand64());
BOOST_CHECK_EQUAL(ctx1.randbits(3), ctx2.randbits(3));
BOOST_CHECK(ctx1.randbytes(17) == ctx2.randbytes(17));
BOOST_CHECK(ctx1.rand256() == ctx2.rand256());
BOOST_CHECK_EQUAL(ctx1.randbits(7), ctx2.randbits(7));
BOOST_CHECK(ctx1.randbytes(128) == ctx2.randbytes(128));
BOOST_CHECK_EQUAL(ctx1.rand32(), ctx2.rand32());
BOOST_CHECK_EQUAL(ctx1.randbits(3), ctx2.randbits(3));
BOOST_CHECK(ctx1.rand256() == ctx2.rand256());
BOOST_CHECK(ctx1.randbytes(50) == ctx2.randbytes(50));
// Check that a nondeterministic ones are not
FastRandomContext ctx3;
FastRandomContext ctx4;
BOOST_CHECK(ctx3.rand64() != ctx4.rand64()); // extremely unlikely to be equal
BOOST_CHECK(ctx3.rand256() != ctx4.rand256());
BOOST_CHECK(ctx3.randbytes(7) != ctx4.randbytes(7));
}
BOOST_AUTO_TEST_CASE(fastrandom_randbits)