1 // Copyright 2017 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "core/fxcrt/fx_random.h" 6 7 #include <array> 8 #include <set> 9 10 #include "testing/gtest/include/gtest/gtest.h" 11 12 TEST(FX_Random, GenerateMT3600times) { 13 // Prove this doesn't spin wait for a second each time. 14 // Since our global seeds are sequential, they wont't collide once 15 // seeded until 2^32 calls, and if the PNRG is any good, we won't 16 // get the same sequence from different seeds, esp. with this few 17 // iterations. 18 std::set<std::array<uint32_t, 16>> seen; 19 std::array<uint32_t, 16> current; 20 for (int i = 0; i < 3600; ++i) { 21 FX_Random_GenerateMT(current.data(), 16); 22 EXPECT_TRUE(seen.insert(current).second); 23 } 24 } 25
