当我尝试从测试夹具中引用enum class
时,它无法编译错误./gtest_mcp23s17.cpp:25:52: error: no type named 'HW_ADDR_6' in 'mcp23s17::HardwareAddress'
TC_mcp23s17 _gpio_x(mcp23s17::HardwareAddress::HW_ADDR_6);
~~~~~~~~~~~~~~~~~~~~~~~~~~~^
但是,如果我将引用留在测试本身(保留所有其他代码未触及),它将无错误地编译并按预期运行测试。这是GoogleTest中的一个错误,或者就测试而言,这个方案有何区别?
测试 (通用) : [编译]
TEST(Construction, WHENObjectIsConstructedTHENAddressParameterIsStored) {
TC_mcp23s17 gpio_x(mcp23s17::HardwareAddress::HW_ADDR_6);
EXPECT_EQ(0x4C, gpio_x.getSpiBusAddress());
}
测试夹具: [COMPILES]
TEST_F(SPITransfer, WHENPinModeHasNotBeenCalledTHENTheCallersChipSelectPinIsHigh) {
TC_mcp23s17 gpio_x(mcp23s17::HardwareAddress::HW_ADDR_6);
EXPECT_EQ(HIGH, getPinLatchValue(SS));
}
测试夹具 (在夹具类中声明gpio_x) : [FAILS]
class SPITransfer : public ::testing::Test {
protected:
TC_mcp23s17 gpio_x(mcp23s17::HardwareAddress::HW_ADDR_6);
...
}
TEST_F(SPITransfer, WHENPinModeHasNotBeenCalledTHENTheCallersChipSelectPinIsHigh) {
EXPECT_EQ(HIGH, getPinLatchValue(SS));
}
答案 0 :(得分:0)
只能使用=
或{}
初始化类成员,而不是()
。所以这些都应该有效:
TC_mcp23s17 gpio_x=mcp23s17::HardwareAddress::HW_ADDR_6;
TC_mcp23s17 gpio_x{mcp23s17::HardwareAddress::HW_ADDR_6};
相当无用的错误消息是因为编译器解释使用()
来表示函数声明,然后混淆,因为括号内的东西不是类型。