Junit Assert.assertEquals中的delta用法

public static void assertEquals(double expected,

double actual,

double delta)

Asserts that two doubles are equal to within a positive delta. If they are not, an AssertionError is thrown. If the expected value is infinity then the delta value is ignored.NaNs are considered equal: assertEquals(Double.NaN, Double.NaN, *) passes

Parameters:

expected - expected value

actual - the value to check against expected

delta - the maximum delta between expected and actual for which both numbers are still considered equal.

// pass
Assert.assertEquals(6.1, 6.0, 0.0);
// error
Assert.assertEquals(6.01, 6.0, 0.000);