API Script............txt

//Check status code................................................................

pm.test("Status code is 200", function () {
    pm.response.to.have.status(200);
});
//Multiple assertion..............
pm.test("multiple value check", function () {
    responseJson=pm.response.json();
    pm.expect(responseJson.data.id).to.eql(2);
    pm.expect(responseJson.data.email).to.eql("janet.weaver@reqres.in");
    pm.expect(responseJson.data.first_name).to.eql("Janet");
    pm.expect(responseJson.data.last_name).to.eql("Weaver");
    });

//Body content check.................................................................

var response = JSON.parse(responseBody);
tests["verify status"] = response.status == "success";
tests["verify name"] = response.data.name == "nayem";
tests["verify age"] = response.data.age == "26";

pm.test("Body content string", function(){
    pm.expect(pm.response.text()).to.include("janet.weaver@reqres.in");
})

//HTTP Status code check...............................................................

pm.test("successful status code", function(){
    pm.expect(pm.response.code).to.be.oneOf([200,201,401]);
})

//Header Check..........................................................................

pm.test("Test Header", function(){
    pm.response.to.be.header("Content-Type","application/json; charset=utf-8");  
})
pm.test("Test Header Content-Length", function(){
    pm.response.to.be.header("Content-Length","122");  
})

pm.test("Content type header check", function(){
    pm.response.to.have.header("Content-Type");
})

pm.test("Content type value", function(){
    pm.expect(pm.response.headers.get("Content-Type")).to.eql("application/json; charset=utf-8");
})


//Cookies Check...............................................................

tests["Cookie test"] = postman.getResponseCookie("Cookie_1").value;

pm.test("Cookies is present", function(){
    pm.expect(pm.cookies.has("Cookie_1")).to.be.true;
})

pm.test("cookies value check", function(){
    pm.expect(pm.cookies.get("Cookie_1")).to.eql("value");
})



//Check Response Body size................................................................

pm.test("check response Time", function(){
    pm.expect(pm.response.responseSize).to.be.eql(1220);
})

var size=0;
for (var count in responseBody) {
    if(responseBody.hasOwnProperty(count))
        size += 1;
}
console.log("BODY SIZE = " + size);