问题描述
我有一个关于 JUnit assertEquals 以测试 double 值的问题.阅读 API 文档 我可以看到:
@Deprecatedpublic static void assertEquals(预期双倍，实际双倍)已弃用.请改用 assertEquals(double expected, double actual, double delta).
(注意:在旧的文档版本中，delta 参数称为 epsilon)
delta(或epsilon)参数是什么意思?
Epsilon 是两个数字可以关闭的值.所以只要 Math.abs(expected - actual) <= epsilon
I have a question about JUnit assertEquals to test double values. Reading the API doc I can see:
@Deprecated public static void assertEquals(double expected, double actual)Deprecated. Use
assertEquals(double expected, double actual, double delta)instead.
(Note: in older documentation versions, the delta parameter is called epsilon)
What does the delta (or epsilon) parameter mean?
Epsilon is the value that the 2 numbers can be off by. So it will assert to true as long as Math.abs(expected - actual) <= epsilon
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