东莞做网站的公司吗,微信微商城怎么进入,北京 公司网站 备案中 开通访问,重庆建设人才网0. 引子 本例是从 gtest-1.5.0 自带的 sample 中的 sample1 改写而来#xff0c;笔者只添加了一个求 n 的阶层的函数#xff0c;如下。 void Factorial(int n, int result ) { result 1; for (int i 1; i n; i) result * i; } 目的是想测试像这样将返回值放在参… 0. 引子 本例是从 gtest-1.5.0 自带的 sample 中的 sample1 改写而来笔者只添加了一个求 n 的阶层的函数如下。 void Factorial(int n, int result ) { result 1; for (int i 1; i n; i) result * i; } 目的是想测试像这样将返回值放在参数中返回的函数。 对于该函数添加的单元测试代码如下。 TEST (FactorialTest , Mytest ) { int result 0; Factorial (5, result); EXPECT_EQ (120, result); } 1. 要测试的代码 要测试的代码 (Sample.h) 代码如下。 [c-sharp] view plaincopy /** * GoogleTest test * platform: win32, visual studio 2005/2010; Linux, gcc4.1.2 */ #ifndef _SAMPLE_H_ #define _SAMPLE_H_ // Returns n! (the factorial of n). For negative n, n! is defined to be 1. int Factorial(int n); void Factorial(int n, int result); // Returns true iff n is a prime number. bool IsPrime(int n); #endif 要测试的代码 (Sample.cpp) 代码如下。 [cpp] view plaincopy /** * GoogleTest test * platform: win32, visual studio 2005/2010; Linux, gcc4.1.2 */ #include sample.h // Returns n! (the factorial of n). For negative n, n! is defined to be 1. int Factorial(int n) { int result 1; for (int i 1; i n; i) result * i; return result; } void Factorial(int n, int result) { result 1; for (int i 1; i n; i) result * i; } // Returns true iff n is a prime number. bool IsPrime(int n) { // Trivial case 1: small numbers if (n 1) return false; // Trivial case 2: even numbers if (n % 2 0) return n2; // Now, we have that n is odd and n 3. // Try to divide n by every odd number i, starting from 3 for (int i 3; ; i 2) { // We only have to try i up to the squre root of n if (i n/i) break; // Now, we have i n/i n. // If n is divisible by i, n is not prime. if (n % i 0) return false; } // n has no integer factor in the range (1, n), and thus is prime. return true; } 2. 单元测试代码 单元测试代码 (test.cpp) 如下。 [cpp] view plaincopy /** * GoogleTest test * platform: win32, visual studio 2005/2010; Linux, gcc4.1.2 */ #include sample.h #include gtest/gtest.h // Step 2. Use the TEST macro to define your tests. // Tests Factorial(). // Tests factorial of negative numbers. // Test Case name is FactorialTest, Test name is Negative TEST(FactorialTest, Negative) { EXPECT_EQ(1, Factorial(-5)); EXPECT_EQ(1, Factorial(-1)); EXPECT_TRUE(Factorial(-10) 0); } // Tests factorial of 0. TEST(FactorialTest, Zero) { EXPECT_EQ(1, Factorial(0)); } // Tests factorial of positive numbers. TEST(FactorialTest, Positive) { EXPECT_EQ(1, Factorial(1)); EXPECT_EQ(2, Factorial(2)); EXPECT_EQ(6, Factorial(3)); EXPECT_EQ(40320, Factorial(8)); } TEST(FactorialTest, Mytest) { int result 0; Factorial(5, result); EXPECT_EQ(120, result); } // Tests IsPrime() // Tests negative input. TEST(IsPrimeTest, Negative) { EXPECT_FALSE(IsPrime(-1)); EXPECT_FALSE(IsPrime(-2)); EXPECT_FALSE(IsPrime(INT_MIN)); } // Tests some trivial cases. TEST(IsPrimeTest, Trivial) { EXPECT_FALSE(IsPrime(0)); EXPECT_FALSE(IsPrime(1)); EXPECT_TRUE(IsPrime(2)); EXPECT_TRUE(IsPrime(3)); } // Tests positive input. TEST(IsPrimeTest, Positive) { EXPECT_FALSE(IsPrime(4)); EXPECT_TRUE(IsPrime(5)); EXPECT_FALSE(IsPrime(6)); EXPECT_TRUE(IsPrime(23)); } // Step 3. Call RUN_ALL_TESTS() in main(). // // We do this by linking in src/gtest_main.cc file, which consists of // a main() function which calls RUN_ALL_TESTS() for us. // // This runs all the tests youve defined, prints the result, and // returns 0 if successful, or 1 otherwise. // // Did you notice that we didnt register the tests? The // RUN_ALL_TESTS() macro magically knows about all the tests we // defined. Isnt this convenient? 3. 编译 3.1 Linux 平台 makefile 文件请参考 “ Linux平台如何编译使用Google test写的单元测试 ” 3.2 Win32 平台 Make.bat 文件请参考 “ Win32 平台如何编译使用 Google test 编 写的单元测试 ” 。 4. 运行结果 4.1 Linux 平台 运行结果如下。 # ./test Running main() from gtest_main.cc [] Running 7 tests from 2 test cases. [----------] Global test environment set-up. [----------] 4 tests from FactorialTest [ RUN ] FactorialTest.Negative [ OK ] FactorialTest.Negative (0 ms) [ RUN ] FactorialTest.Zero [ OK ] FactorialTest.Zero (0 ms) [ RUN ] FactorialTest.Positive [ OK ] FactorialTest.Positive (0 ms) [ RUN ] FactorialTest.Mytest [ OK ] FactorialTest.Mytest (0 ms) [----------] 4 tests from FactorialTest (0 ms total) [----------] 3 tests from IsPrimeTest [ RUN ] IsPrimeTest.Negative [ OK ] IsPrimeTest.Negative (0 ms) [ RUN ] IsPrimeTest.Trivial [ OK ] IsPrimeTest.Trivial (0 ms) [ RUN ] IsPrimeTest.Positive [ OK ] IsPrimeTest.Positive (0 ms) [----------] 3 tests from IsPrimeTest (0 ms total) [----------] Global test environment tear-down [] 7 tests from 2 test cases ran. (0 ms total) [ PASSED ] 7 tests. 7 个测试均通过。 4.2 Win32 平台 运行结果如下。
