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1 | // Copyright 2008 Google Inc. |
2 | // All Rights Reserved. | |
3 | // | |
4 | // Redistribution and use in source and binary forms, with or without | |
5 | // modification, are permitted provided that the following conditions are | |
6 | // met: | |
7 | // | |
8 | // * Redistributions of source code must retain the above copyright | |
9 | // notice, this list of conditions and the following disclaimer. | |
10 | // * Redistributions in binary form must reproduce the above | |
11 | // copyright notice, this list of conditions and the following disclaimer | |
12 | // in the documentation and/or other materials provided with the | |
13 | // distribution. | |
14 | // * Neither the name of Google Inc. nor the names of its | |
15 | // contributors may be used to endorse or promote products derived from | |
16 | // this software without specific prior written permission. | |
17 | // | |
18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1e59de90 | 29 | |
31f18b77 FG |
30 | |
31 | // This sample shows how to test common properties of multiple | |
32 | // implementations of an interface (aka interface tests) using | |
33 | // value-parameterized tests. Each test in the test case has | |
34 | // a parameter that is an interface pointer to an implementation | |
35 | // tested. | |
36 | ||
37 | // The interface and its implementations are in this header. | |
38 | #include "prime_tables.h" | |
39 | ||
40 | #include "gtest/gtest.h" | |
1e59de90 | 41 | namespace { |
31f18b77 FG |
42 | |
43 | using ::testing::TestWithParam; | |
44 | using ::testing::Values; | |
45 | ||
46 | // As a general rule, to prevent a test from affecting the tests that come | |
47 | // after it, you should create and destroy the tested objects for each test | |
48 | // instead of reusing them. In this sample we will define a simple factory | |
49 | // function for PrimeTable objects. We will instantiate objects in test's | |
50 | // SetUp() method and delete them in TearDown() method. | |
51 | typedef PrimeTable* CreatePrimeTableFunc(); | |
52 | ||
53 | PrimeTable* CreateOnTheFlyPrimeTable() { | |
54 | return new OnTheFlyPrimeTable(); | |
55 | } | |
56 | ||
57 | template <size_t max_precalculated> | |
58 | PrimeTable* CreatePreCalculatedPrimeTable() { | |
59 | return new PreCalculatedPrimeTable(max_precalculated); | |
60 | } | |
61 | ||
62 | // Inside the test body, fixture constructor, SetUp(), and TearDown() you | |
63 | // can refer to the test parameter by GetParam(). In this case, the test | |
64 | // parameter is a factory function which we call in fixture's SetUp() to | |
65 | // create and store an instance of PrimeTable. | |
1e59de90 | 66 | class PrimeTableTestSmpl7 : public TestWithParam<CreatePrimeTableFunc*> { |
31f18b77 | 67 | public: |
1e59de90 TL |
68 | ~PrimeTableTestSmpl7() override { delete table_; } |
69 | void SetUp() override { table_ = (*GetParam())(); } | |
70 | void TearDown() override { | |
31f18b77 | 71 | delete table_; |
1e59de90 | 72 | table_ = nullptr; |
31f18b77 FG |
73 | } |
74 | ||
75 | protected: | |
76 | PrimeTable* table_; | |
77 | }; | |
78 | ||
1e59de90 | 79 | TEST_P(PrimeTableTestSmpl7, ReturnsFalseForNonPrimes) { |
31f18b77 FG |
80 | EXPECT_FALSE(table_->IsPrime(-5)); |
81 | EXPECT_FALSE(table_->IsPrime(0)); | |
82 | EXPECT_FALSE(table_->IsPrime(1)); | |
83 | EXPECT_FALSE(table_->IsPrime(4)); | |
84 | EXPECT_FALSE(table_->IsPrime(6)); | |
85 | EXPECT_FALSE(table_->IsPrime(100)); | |
86 | } | |
87 | ||
1e59de90 | 88 | TEST_P(PrimeTableTestSmpl7, ReturnsTrueForPrimes) { |
31f18b77 FG |
89 | EXPECT_TRUE(table_->IsPrime(2)); |
90 | EXPECT_TRUE(table_->IsPrime(3)); | |
91 | EXPECT_TRUE(table_->IsPrime(5)); | |
92 | EXPECT_TRUE(table_->IsPrime(7)); | |
93 | EXPECT_TRUE(table_->IsPrime(11)); | |
94 | EXPECT_TRUE(table_->IsPrime(131)); | |
95 | } | |
96 | ||
1e59de90 | 97 | TEST_P(PrimeTableTestSmpl7, CanGetNextPrime) { |
31f18b77 FG |
98 | EXPECT_EQ(2, table_->GetNextPrime(0)); |
99 | EXPECT_EQ(3, table_->GetNextPrime(2)); | |
100 | EXPECT_EQ(5, table_->GetNextPrime(3)); | |
101 | EXPECT_EQ(7, table_->GetNextPrime(5)); | |
102 | EXPECT_EQ(11, table_->GetNextPrime(7)); | |
103 | EXPECT_EQ(131, table_->GetNextPrime(128)); | |
104 | } | |
105 | ||
106 | // In order to run value-parameterized tests, you need to instantiate them, | |
107 | // or bind them to a list of values which will be used as test parameters. | |
108 | // You can instantiate them in a different translation module, or even | |
109 | // instantiate them several times. | |
110 | // | |
111 | // Here, we instantiate our tests with a list of two PrimeTable object | |
112 | // factory functions: | |
1e59de90 TL |
113 | INSTANTIATE_TEST_SUITE_P(OnTheFlyAndPreCalculated, PrimeTableTestSmpl7, |
114 | Values(&CreateOnTheFlyPrimeTable, | |
115 | &CreatePreCalculatedPrimeTable<1000>)); | |
31f18b77 | 116 | |
1e59de90 | 117 | } // namespace |