Check the details here for a full tutorial:

https://medium.com/@akashdktyagi/consumer-driven-contract-testing-with-pact-part-1-basics-adc5cdbe5126

Lambda DSL

Different ways to configure the Body

.body(newJsonArrayMinLike(1, array ->
    array.object(object -> {
        object.integerType("age");
        object.stringType("department");
        object.stringType("designation");
        object.stringType("email");
        object.integerType("empId");
        object.integerType("id");
        object.stringType("name");
        object.stringType("phone");
        object.stringType("salary");
    })).build())

Will Generate, random values

[Employee(id=1386609266, empId=281998917, name=FaQPcd192W9OCqNyaDGa, age=1758585207, email=j5qiBTgbMcrTZJ4iVdwT, phone=MNPHbE9JGU15HvrJocPT, department=zI8cplOd54u9RnQxQDb6, salary=ZuuGFf83V0OI5TnINYrM, designation=hFxVi7svvP6pC1jcrhyI)]

.body(newJsonArrayMinLike(1, array ->
    array.object(object -> {
        object.stringType("age", "78");
        object.stringType("department", "HR");
        object.stringType("designation", "Manager");
        object.stringType("email", "a@a.com");
        object.stringType("empId", "435443");
        object.stringType("id", "123");
        object.stringType("name", "Akash");
        object.stringType("phone", "342424");
        object.stringType("salary", "5000");
    })).build())

Will Generate, example values

[Employee(id=123, empId=435443, name=Akash, age=78, email=a@a.com, phone=342424, department=HR, salary=5000, designation=Manager)]

Usefull Links:

https://docs.pact.io/getting_started/matching

Sudo lsof -i:5432

Kill -9 <p_id>