c++ - Google Test Check for Float Not Equality

Question

是否期望浮点值不等于第二个值？
例如EXPECT_FLOAT_EQ(val1，val2)的反面

Answer 1

我不认为GTest具有此功能，他们在documentation中解释

Some floating-point operations are useful, but not that often used. In order to avoid an explosion of new macros, we provide them as predicate-format functions that can be used in predicate assertion macros (e.g. EXPECT_PRED_FORMAT2, etc).

您可以定义一个谓词(如@idclev 463035818所建议)，并将其传递到 EXPECT_PRED_FORMAT2(pred, val1, val2)中。谓词必须符合签名:

testing::AssertionResult pred(const char* expr1, const char* expr2,
                                    double val1, double val2);

其中 expr1和 expr2是将在断言消息中使用的float参数的字符串表示形式。