sample7_unittest.cc
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00001 // Copyright 2008 Google Inc.
00002 // All Rights Reserved.
00003 //
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00006 // met:
00007 //
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00009 // notice, this list of conditions and the following disclaimer.
00010 //     * Redistributions in binary form must reproduce the above
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00017 //
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00025 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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00029 //
00030 // Author: vladl@google.com (Vlad Losev)
00031 
00032 // This sample shows how to test common properties of multiple
00033 // implementations of an interface (aka interface tests) using
00034 // value-parameterized tests. Each test in the test case has
00035 // a parameter that is an interface pointer to an implementation
00036 // tested.
00037 
00038 // The interface and its implementations are in this header.
00039 #include "prime_tables.h"
00040 
00041 #include "gtest/gtest.h"
00042 
00043 #if GTEST_HAS_PARAM_TEST
00044 
00045 using ::testing::TestWithParam;
00046 using ::testing::Values;
00047 
00048 // As a general rule, to prevent a test from affecting the tests that come
00049 // after it, you should create and destroy the tested objects for each test
00050 // instead of reusing them.  In this sample we will define a simple factory
00051 // function for PrimeTable objects.  We will instantiate objects in test's
00052 // SetUp() method and delete them in TearDown() method.
00053 typedef PrimeTable* CreatePrimeTableFunc();
00054 
00055 PrimeTable* CreateOnTheFlyPrimeTable() {
00056   return new OnTheFlyPrimeTable();
00057 }
00058 
00059 template <size_t max_precalculated>
00060 PrimeTable* CreatePreCalculatedPrimeTable() {
00061   return new PreCalculatedPrimeTable(max_precalculated);
00062 }
00063 
00064 // Inside the test body, fixture constructor, SetUp(), and TearDown() you
00065 // can refer to the test parameter by GetParam().  In this case, the test
00066 // parameter is a factory function which we call in fixture's SetUp() to
00067 // create and store an instance of PrimeTable.
00068 class PrimeTableTest : public TestWithParam<CreatePrimeTableFunc*> {
00069  public:
00070   virtual ~PrimeTableTest() { delete table_; }
00071   virtual void SetUp() { table_ = (*GetParam())(); }
00072   virtual void TearDown() {
00073     delete table_;
00074     table_ = NULL;
00075   }
00076 
00077  protected:
00078   PrimeTable* table_;
00079 };
00080 
00081 TEST_P(PrimeTableTest, ReturnsFalseForNonPrimes) {
00082   EXPECT_FALSE(table_->IsPrime(-5));
00083   EXPECT_FALSE(table_->IsPrime(0));
00084   EXPECT_FALSE(table_->IsPrime(1));
00085   EXPECT_FALSE(table_->IsPrime(4));
00086   EXPECT_FALSE(table_->IsPrime(6));
00087   EXPECT_FALSE(table_->IsPrime(100));
00088 }
00089 
00090 TEST_P(PrimeTableTest, ReturnsTrueForPrimes) {
00091   EXPECT_TRUE(table_->IsPrime(2));
00092   EXPECT_TRUE(table_->IsPrime(3));
00093   EXPECT_TRUE(table_->IsPrime(5));
00094   EXPECT_TRUE(table_->IsPrime(7));
00095   EXPECT_TRUE(table_->IsPrime(11));
00096   EXPECT_TRUE(table_->IsPrime(131));
00097 }
00098 
00099 TEST_P(PrimeTableTest, CanGetNextPrime) {
00100   EXPECT_EQ(2, table_->GetNextPrime(0));
00101   EXPECT_EQ(3, table_->GetNextPrime(2));
00102   EXPECT_EQ(5, table_->GetNextPrime(3));
00103   EXPECT_EQ(7, table_->GetNextPrime(5));
00104   EXPECT_EQ(11, table_->GetNextPrime(7));
00105   EXPECT_EQ(131, table_->GetNextPrime(128));
00106 }
00107 
00108 // In order to run value-parameterized tests, you need to instantiate them,
00109 // or bind them to a list of values which will be used as test parameters.
00110 // You can instantiate them in a different translation module, or even
00111 // instantiate them several times.
00112 //
00113 // Here, we instantiate our tests with a list of two PrimeTable object
00114 // factory functions:
00115 INSTANTIATE_TEST_CASE_P(
00116     OnTheFlyAndPreCalculated,
00117     PrimeTableTest,
00118     Values(&CreateOnTheFlyPrimeTable, &CreatePreCalculatedPrimeTable<1000>));
00119 
00120 #else
00121 
00122 // Google Test may not support value-parameterized tests with some
00123 // compilers. If we use conditional compilation to compile out all
00124 // code referring to the gtest_main library, MSVC linker will not link
00125 // that library at all and consequently complain about missing entry
00126 // point defined in that library (fatal error LNK1561: entry point
00127 // must be defined). This dummy test keeps gtest_main linked in.
00128 TEST(DummyTest, ValueParameterizedTestsAreNotSupportedOnThisPlatform) {}
00129 
00130 #endif  // GTEST_HAS_PARAM_TEST


rc_visard_driver
Author(s): Heiko Hirschmueller , Christian Emmerich , Felix Ruess
autogenerated on Thu Jun 6 2019 20:43:06