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 // Copyright 2008 Google Inc.

 // All Rights Reserved.

 //

 // Redistribution and use in source and binary forms, with or without

 // modification, are permitted provided that the following conditions are

 // met:

 //

 //     * Redistributions of source code must retain the above copyright

 // notice, this list of conditions and the following disclaimer.

 //     * Redistributions in binary form must reproduce the above

 // copyright notice, this list of conditions and the following disclaimer

 // in the documentation and/or other materials provided with the

 // distribution.

 //     * Neither the name of Google Inc. nor the names of its

 // contributors may be used to endorse or promote products derived from

 // this software without specific prior written permission.

 //

 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 //

 // Author: vladl@google.com (Vlad Losev)

 // This sample shows how to test common properties of multiple

 // implementations of an interface (aka interface tests) using

 // value-parameterized tests. Each test in the test case has

 // a parameter that is an interface pointer to an implementation

 // tested.

 // The interface and its implementations are in this header.

 #include "prime_tables.h"

 #include "gtest/gtest.h"

 #if GTEST_HAS_PARAM_TEST

 using ::testing::TestWithParam;

 using ::testing::Values;

 // As a general rule, to prevent a test from affecting the tests that come

 // after it, you should create and destroy the tested objects for each test

 // instead of reusing them.  In this sample we will define a simple factory

 // function for PrimeTable objects.  We will instantiate objects in test's

 // SetUp() method and delete them in TearDown() method.

 typedef PrimeTable* CreatePrimeTableFunc();

 PrimeTable* CreateOnTheFlyPrimeTable() {

   return new OnTheFlyPrimeTable();

 }

 template <size_t max_precalculated>

 PrimeTable* CreatePreCalculatedPrimeTable() {

   return new PreCalculatedPrimeTable(max_precalculated);

 }

 // Inside the test body, fixture constructor, SetUp(), and TearDown() you

 // can refer to the test parameter by GetParam().  In this case, the test

 // parameter is a factory function which we call in fixture's SetUp() to

 // create and store an instance of PrimeTable.

 class PrimeTableTest : public TestWithParam<CreatePrimeTableFunc*> {

  public:

   virtual ~PrimeTableTest() { delete table_; }

   virtual void SetUp() { table_ = (*GetParam())(); }

   virtual void TearDown() {

     delete table_;

     table_ = NULL;

   }

  protected:

   PrimeTable* table_;

 };

 TEST_P(PrimeTableTest, ReturnsFalseForNonPrimes) {

   EXPECT_FALSE(table_->IsPrime(-5));

   EXPECT_FALSE(table_->IsPrime(0));

   EXPECT_FALSE(table_->IsPrime(1));

   EXPECT_FALSE(table_->IsPrime(4));

   EXPECT_FALSE(table_->IsPrime(6));

   EXPECT_FALSE(table_->IsPrime(100));

 }

 TEST_P(PrimeTableTest, ReturnsTrueForPrimes) {

   EXPECT_TRUE(table_->IsPrime(2));

   EXPECT_TRUE(table_->IsPrime(3));

   EXPECT_TRUE(table_->IsPrime(5));

   EXPECT_TRUE(table_->IsPrime(7));

   EXPECT_TRUE(table_->IsPrime(11));

   EXPECT_TRUE(table_->IsPrime(131));

 }

 TEST_P(PrimeTableTest, CanGetNextPrime) {

   EXPECT_EQ(2, table_->GetNextPrime(0));

   EXPECT_EQ(3, table_->GetNextPrime(2));

   EXPECT_EQ(5, table_->GetNextPrime(3));

   EXPECT_EQ(7, table_->GetNextPrime(5));

   EXPECT_EQ(11, table_->GetNextPrime(7));

   EXPECT_EQ(131, table_->GetNextPrime(128));

 }

 // In order to run value-parameterized tests, you need to instantiate them,

 // or bind them to a list of values which will be used as test parameters.

 // You can instantiate them in a different translation module, or even

 // instantiate them several times.

 //

 // Here, we instantiate our tests with a list of two PrimeTable object

 // factory functions:

 INSTANTIATE_TEST_CASE_P(

     OnTheFlyAndPreCalculated,

     PrimeTableTest,

     Values(&CreateOnTheFlyPrimeTable, &CreatePreCalculatedPrimeTable<1000>));

 #else

 // Google Test may not support value-parameterized tests with some

 // compilers. If we use conditional compilation to compile out all

 // code referring to the gtest_main library, MSVC linker will not link

 // that library at all and consequently complain about missing entry

 // point defined in that library (fatal error LNK1561: entry point

 // must be defined). This dummy test keeps gtest_main linked in.

 TEST(DummyTest, ValueParameterizedTestsAreNotSupportedOnThisPlatform) {}

 #endif  // GTEST_HAS_PARAM_TEST