Rest Assured: List deserialization

Below API return list of employees.

API: http://localhost:8080/api/v1/employees

Method: GET

[
    {
        "id": 1,
        "firstName": "Deepak",
        "lastName": "Moud"
    },
    {
        "id": 2,
        "firstName": "Srinivasa Rao",
        "lastName": "Gumma"
    },
    {
        "id": 3,
        "firstName": "Purna Chandra",
        "lastName": "Rao"
    },
    {
        "id": 4,
        "firstName": "Madhavi Latha",
        "lastName": "Gumma"
    },
    {
        "id": 5,
        "firstName": "Raghava",
        "lastName": "Reddy"
    },
    {
        "id": 6,
        "firstName": "Ram",
        "lastName": "Gurram"
    },
    {
        "id": 7,
        "firstName": "Gopi",
        "lastName": "Battu"
    },
    {
        "id": 8,
        "firstName": "Gopi",
        "lastName": "Gumma"
    },
    {
        "id": 9,
        "firstName": "Radha",
        "lastName": "Krishna"
    }
]

Following are the multiple ways to deserialize list of employees.

Example 1:

Response response = given().header("Accept", "application/json").when().get("api/v1/employees/").then()

.assertThat().statusCode(200).and().contentType(ContentType.JSON).extract().response();

Employee[] empArray = response.as(Employee[].class);

List<Employee> emps1 = Arrays.asList(empArray);

Example 2:

JsonNode jsonNode = given().header("Accept", "application/json").when().get("api/v1/employees/").then()

.assertThat().statusCode(200).and().contentType(ContentType.JSON).extract().as(JsonNode.class);

ObjectMapper mapper = new ObjectMapper();

List<Employee> emps2 = mapper.convertValue(jsonNode, new TypeReference<List<Employee>>() {

});

Example 3:

List<Employee> emps3 = given().header("Accept", "application/json").when().get("api/v1/employees/").then()

.assertThat().statusCode(200).and().contentType(ContentType.JSON).extract().body().jsonPath()

.getList(".", Employee.class);

Employee.java

package com.sample.app.model;

public class Employee {
    private int id;
    private String firstName;
    private String lastName;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    @Override
    public String toString() {
        return "Employee [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + "]";
    }

}

TestApp.java

package com.sample.app;

import static io.restassured.RestAssured.given;

import java.util.Arrays;
import java.util.List;

import org.junit.Test;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.sample.app.model.Employee;

import io.restassured.RestAssured;
import io.restassured.http.ContentType;
import io.restassured.response.Response;

public class TestApp {

    @Test
    public void testApp() {
        RestAssured.baseURI = "http://localhost:8080";

        Response response = given().header("Accept", "application/json").when().get("api/v1/employees/").then()
                .assertThat().statusCode(200).and().contentType(ContentType.JSON).extract().response();
        Employee[] empArray = response.as(Employee[].class);
        List<Employee> emps1 = Arrays.asList(empArray);

        JsonNode jsonNode = given().header("Accept", "application/json").when().get("api/v1/employees/").then()
                .assertThat().statusCode(200).and().contentType(ContentType.JSON).extract().as(JsonNode.class);
        ObjectMapper mapper = new ObjectMapper();
        List<Employee> emps2 = mapper.convertValue(jsonNode, new TypeReference<List<Employee>>() {
        });

        List<Employee> emps3 = given().header("Accept", "application/json").when().get("api/v1/employees/").then()
                .assertThat().statusCode(200).and().contentType(ContentType.JSON).extract().body().jsonPath()
                .getList(".", Employee.class);

        emps1.forEach(System.out::println);
        emps2.forEach(System.out::println);
        emps3.forEach(System.out::println);

    }

}

Run TestApp.java as junit test, you will get below response.

Employee [id=1, firstName=Deepak, lastName=Moud]
Employee [id=2, firstName=Srinivasa Rao, lastName=Gumma]
Employee [id=3, firstName=Purna Chandra, lastName=Rao]
Employee [id=4, firstName=Madhavi Latha, lastName=Gumma]
Employee [id=5, firstName=Raghava, lastName=Reddy]
Employee [id=6, firstName=Ram, lastName=Gurram]
Employee [id=7, firstName=Gopi, lastName=Battu]
Employee [id=8, firstName=Gopi, lastName=Gumma]
Employee [id=9, firstName=Radha, lastName=Krishna]
Employee [id=1, firstName=Deepak, lastName=Moud]
Employee [id=2, firstName=Srinivasa Rao, lastName=Gumma]
Employee [id=3, firstName=Purna Chandra, lastName=Rao]
Employee [id=4, firstName=Madhavi Latha, lastName=Gumma]
Employee [id=5, firstName=Raghava, lastName=Reddy]
Employee [id=6, firstName=Ram, lastName=Gurram]
Employee [id=7, firstName=Gopi, lastName=Battu]
Employee [id=8, firstName=Gopi, lastName=Gumma]
Employee [id=9, firstName=Radha, lastName=Krishna]
Employee [id=1, firstName=Deepak, lastName=Moud]
Employee [id=2, firstName=Srinivasa Rao, lastName=Gumma]
Employee [id=3, firstName=Purna Chandra, lastName=Rao]
Employee [id=4, firstName=Madhavi Latha, lastName=Gumma]
Employee [id=5, firstName=Raghava, lastName=Reddy]
Employee [id=6, firstName=Ram, lastName=Gurram]
Employee [id=7, firstName=Gopi, lastName=Battu]
Employee [id=8, firstName=Gopi, lastName=Gumma]
Employee [id=9, firstName=Radha, lastName=Krishna]

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