gtest学习之断言

gtest中，断言的宏可以理解分为两类：一类是ASSERT系列，另一类是EXPECT系列。

ASSERT系列的断言----当检查点失败时，退出当前函数；

EXPECT系列的断言----当检查点失败时，继续往下执行。

样例：

//int型比较，预期值：3，实际值：Add(1， 2)
EXPECT_EQ(3, Add(1, 2)

如果Add(1, 2)的结果为5时，会在结果中输出：

g:\myproject\c++\gtestdemo\gtestdemo\gtestdemo.cpp(16): error: Value of: Add(1, 2)
Actual: 4
Expected:3

布尔值检查的宏：

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

显示返回成功或失败

Fatal assertion	Nonfatal assertion
FAIL()	ADD_FAILURE()

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

检查浮点数：

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

Windows HRESULT assertions

Fatal assertion	Nonfatal assertion	Verifies
ASSERT_HRESULT_SUCCEEDED(expression)	EXPECT_HRESULT_SUCCEEDED(expression)	expression is a success HRESULT
ASSERT_HRESULT_FAILED(expression)	EXPECT_HRESULT_FAILED(expression)	expression is a failure HRESULT