March
4th,
2015
我们是通过Assertion来断言一个类或函数的行为的
错误信息
- 当发生错误时，gtest会显示错误信息，信息中自带错误的来源文件，代码第几行，以及失败信息
- 我们通过在Assertoins后面使用 « 符号即可自定义错误信息
for (int i = 0; i < x.size(); ++i) {
EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
}条件测试
| Fatal assertion | Nonfatal assertion | Verifies |
|---|---|---|
| ASSERT_TRUE(condition); | EXPECT_TRUE(condition); | condition is true |
| ASSERT_FALSE(condition); | EXPECT_FALSE(condition); | condition is false |
二元比较
- 比较的两个对象必须支持相应的 操作符 运算
- 两个参数的执行顺序是不确定的，程序不应该依赖于特定顺序
- C++的string类型应该使用这类宏进行比较
| Fatal assertion | Nonfatal assertion | Verifies |
|---|---|---|
| ASSERT_EQ(expected, actual); | EXPECT_EQ(expected, actual) | expected == actual |
| ASSERT_NE(val1, val2); | EXPECT_NE(val1, val2); | val1 != val2 |
| ASSERT_LT(val1, val2); | EXPECT_LT(val1, val2); | val1 < val2 |
| ASSERT_LE(val1, val2); | EXPECT_LE(val1, val2); | val1 <= val2 |
| ASSERT_GT(val1, val2); | EXPECT_GT(val1, val2); | val1 > val2 |
| ASSERT_GE(val1, val2); | EXPECT_GE(val1, val2); | val1 >= val2 |
C string 比较
| Fatal assertion | Nonfatal assertion | Verifies |
|---|---|---|
| ASSERT_STREQ(expected_str, actual_str); | EXPECT_STREQ(expected_str, actual_str); | the two C strings have the same content |
| ASSERT_STRNE(str1, str2); | EXPECT_STRNE(str1, str2); | the two C strings have different content |
| ASSERT_STRCASEEQ(expected_str, actual_str); | EXPECT_STRCASEEQ(expected_str, actual_str); | the two C strings have the same content, ignoring case |
| ASSERT_STRCASENE(str1, str2); | EXPECT_STRCASENE(str1, str2); | the two C strings have different content, ignoring case |