1 // Copyright (c) 2008 The Chromium 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.
5 #include "base/rand_util.h"
9 #include "testing/gtest/include/gtest/gtest.h"
13 const int kIntMin
= std::numeric_limits
<int>::min();
14 const int kIntMax
= std::numeric_limits
<int>::max();
18 TEST(RandUtilTest
, SameMinAndMax
) {
19 EXPECT_EQ(base::RandInt(0, 0), 0);
20 EXPECT_EQ(base::RandInt(kIntMin
, kIntMin
), kIntMin
);
21 EXPECT_EQ(base::RandInt(kIntMax
, kIntMax
), kIntMax
);
24 TEST(RandUtilTest
, RandDouble
) {
25 // Force 64-bit precision, making sure we're not in a 80-bit FPU register.
26 volatile double number
= base::RandDouble();
27 EXPECT_GT(1.0, number
);
28 EXPECT_LE(0.0, number
);