本blog整理google自家的工具链，包括glags、glog、gtest、protocol-buffers
Googletest-断言
EXPECT_EQ(expected, actual) is the same as EXPECT_TRUE((expected) == (actual))
EXPECT_* 失败时，案例继续往下执行。ASSERT_* 失败时，直接在当前函数中返回，当前函数中ASSERT_*后面的语句将不会执行。
布尔值检查
| Fatal assertion |
Nonfatal assertion |
Verifies |
| ASSERT_TRUE(condition); |
EXPECT_TRUE(condition); |
condition is true |
| ASSERT_FALSE(condition); |
EXPECT_FALSE(condition); |
condition is false |
数值型数据检查
| 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 |
字符串检查
| 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 |
异常检查
| Fatal assertion |
Nonfatal assertion |
Verifies |
| ASSERT_THROW(statement, exception_type); |
EXPECT_THROW(statement, exception_type); |
statement throws an exception of the given type |
| ASSERT_ANY_THROW(statement); |
EXPECT_ANY_THROW(statement); |
statement throws an exception of any type |
| ASSERT_NO_THROW(statement); |
EXPECT_NO_THROW(statement); |
statement doesn’t throw any exception |
浮点型检查
| Fatal assertion |
Nonfatal assertion |
Verifies |
| ASSERT_FLOAT_EQ(expected, actual); |
EXPECT_FLOAT_EQ(expected, actual); |
the two float values are almost equal |
| ASSERT_DOUBLE_EQ(expected, actual); |
EXPECT_DOUBLE_EQ(expected, actual); |
the two double values are almost equal |
对相近的两个数比较：
| Fatal assertion |
Nonfatal assertion |
Verifies |
| ASSERT_NEAR(val1, val2, abs_error); |
EXPECT_NEAR(val1, val2, abs_error); |
the difference between val1 and val2 doesn’t exceed the given absolute error |