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      1 /*
      2  * libjingle
      3  * Copyright 2004--2011, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <string>
     29 
     30 #include "talk/base/gunit.h"
     31 #include "talk/base/helpers.h"
     32 #include "talk/base/ssladapter.h"
     33 
     34 namespace talk_base {
     35 
     36 class RandomTest : public testing::Test {
     37  public:
     38   static void SetUpTestCase() {
     39     talk_base::InitializeSSL();
     40   }
     41 
     42   static void TearDownTestCase() {
     43     talk_base::CleanupSSL();
     44   }
     45 };
     46 
     47 TEST_F(RandomTest, TestCreateRandomId) {
     48   CreateRandomId();
     49 }
     50 
     51 TEST_F(RandomTest, TestCreateRandomDouble) {
     52   for (int i = 0; i < 100; ++i) {
     53     double r = CreateRandomDouble();
     54     EXPECT_GE(r, 0.0);
     55     EXPECT_LT(r, 1.0);
     56   }
     57 }
     58 
     59 TEST_F(RandomTest, TestCreateNonZeroRandomId) {
     60   EXPECT_NE(0U, CreateRandomNonZeroId());
     61 }
     62 
     63 TEST_F(RandomTest, TestCreateRandomString) {
     64   std::string random = CreateRandomString(256);
     65   EXPECT_EQ(256U, random.size());
     66   std::string random2;
     67   EXPECT_TRUE(CreateRandomString(256, &random2));
     68   EXPECT_NE(random, random2);
     69   EXPECT_EQ(256U, random2.size());
     70 }
     71 
     72 TEST_F(RandomTest, TestCreateRandomForTest) {
     73   // Make sure we get the output we expect.
     74   SetRandomTestMode(true);
     75   EXPECT_EQ(2154761789U, CreateRandomId());
     76   EXPECT_EQ("h0ISP4S5SJKH/9EY", CreateRandomString(16));
     77 
     78   // Reset and make sure we get the same output.
     79   SetRandomTestMode(true);
     80   EXPECT_EQ(2154761789U, CreateRandomId());
     81   EXPECT_EQ("h0ISP4S5SJKH/9EY", CreateRandomString(16));
     82 
     83   // Test different character sets.
     84   SetRandomTestMode(true);
     85   std::string str;
     86   EXPECT_TRUE(CreateRandomString(16, "a", &str));
     87   EXPECT_EQ("aaaaaaaaaaaaaaaa", str);
     88   EXPECT_TRUE(CreateRandomString(16, "abc", &str));
     89   EXPECT_EQ("acbccaaaabbaacbb", str);
     90 
     91   // Turn off test mode for other tests.
     92   SetRandomTestMode(false);
     93 }
     94 
     95 }  // namespace talk_base
     96