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1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 //     * Redistributions of source code must retain the above copyright
7 //       notice, this list of conditions and the following disclaimer.
8 //     * Redistributions in binary form must reproduce the above
9 //       copyright notice, this list of conditions and the following
10 //       disclaimer in the documentation and/or other materials provided
11 //       with the distribution.
12 //     * Neither the name of Google Inc. nor the names of its
13 //       contributors may be used to endorse or promote products derived
14 //       from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
28 #include "src/v8.h"
29 #include "test/cctest/cctest.h"
30 
31 #include "src/base/utils/random-number-generator.h"
32 #include "src/isolate-inl.h"
33 
34 using namespace v8::internal;
35 
36 
37 static const int64_t kRandomSeeds[] = {-1, 1, 42, 100, 1234567890, 987654321};
38 
39 
TEST(RandomSeedFlagIsUsed)40 TEST(RandomSeedFlagIsUsed) {
41   for (unsigned n = 0; n < arraysize(kRandomSeeds); ++n) {
42     FLAG_random_seed = static_cast<int>(kRandomSeeds[n]);
43     v8::Isolate* i = v8::Isolate::New();
44     v8::base::RandomNumberGenerator& rng =
45         *reinterpret_cast<Isolate*>(i)->random_number_generator();
46     CHECK_EQ(kRandomSeeds[n], rng.initial_seed());
47     i->Dispose();
48   }
49 }
50