Rest assured test case is failing due to floating point confusion

Question

I am running with a test case in rest assured but it is failing with below error:

java.lang.AssertionError: 1 expectation failed. JSON path zero_base.herebyBreakdown doesn't match. Expected: with toString() "[{value=-365305.5f, value=-75133.81f, value=79750.484f, value=0.0f}]" Actual: [{value=-365305.5, value=-75133.81, value=79750.484, value=0.0}]

while, Actual results from post man are:

{
    "value": -365305.5066
},
{
    "value": -75133.816
},
{
    "value": 79750.4868
},
{
    "value": 0
}

Can someone please help me out here !

Answer 1

Looks like you compare floats to doubles.

Please make sure that compared values are the same type, or even better in case of floating-point numbers you should take into account that the resulting numbers might not be equal - and compare them with some error margin.

(For example in restassured/hamcrest there is sth like "closeTo", org.hamcrest.number.IsCloseTo , for example:

assertThat(actual, is(closeTo(6, 0.5)));