首先，在專案按下右鍵，點選管理方案的NuGet套件
接著的操作如下圖
下載完後會有會顯示已完成，畫面如下
接著我們就開始寫一個函式計算內積運算，以及進行單元測試
程式碼如下:
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| #include <gtest/gtest.h> | |
| double computeInnerProduct(double v1[], double v2[], int d1, int d2) | |
| { | |
| if (d1 != d2) | |
| throw "Vectors of different dimension!"; | |
| double r = 0; | |
| for (int i = 0; i<d1; ++i) { | |
| r += v1[i] * v2[i]; | |
| } | |
| return r; | |
| } | |
| int main(int argc, char *argv[]) { | |
| testing::InitGoogleTest(&argc, argv); | |
| RUN_ALL_TESTS(); | |
| system("pause"); | |
| return 0; | |
| } | |
| TEST(computeInnerProduct, computeValue) | |
| { | |
| double u[2] = { 1,0 }; | |
| double v[2] = { 1,1 }; | |
| /*將u和v兩個陣列丟到computeInnerProduct函數進行內積運算 | |
| 而我們期望回傳的值是1 */ | |
| EXPECT_EQ(1, computeInnerProduct(u, v, 2, 2)); | |
| } | |
| TEST(computerInnerProduct, dim_error) | |
| { | |
| double x[2] = { 1,0 }; | |
| double y[3] = { 1,1,1 }; | |
| try { | |
| computeInnerProduct(x, y, 2, 3); | |
| } | |
| catch (char const * s) { | |
| //strcmp() 比較兩個字串是否相等，相等就回傳 0 | |
| //An assert is a statment that is either true or false | |
| //assert can be used to check whether or not your code satisffies the assertion | |
| assert(0 == strcmp("Vectors of different dimension!", s)); | |
| } | |
| } |
得到的結果為
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