API Vs Web Service
API methods - Get, Put, Post, Delete
Put Vs Post
Advantages - Language independent, early defect identification
Protocols - HTTP, SOAP, REST(architectural pattern)
Tools - Postman, REST Assured
API documentation - quick ref for accessing library (Swagger)
Challenges - parameter selection, parameter combination, call sequence
Rest Vs RestAssured
API Codes
Informational codes - 100 Continue, 101 Switching Protocol, 102 Processing(WebDAV), 103 Early Hints
Status codes(success) - 200 OK(Success), 201 Created, 202 Accepted
Status codes(redirectional) - 301 Moved permanently, 302 Found
Client Side error codes - 400 Bad request, 401 Unauthorized, 403 Forbidden, 404 Not found, 429 Too may requests, 402 Payment required(Experimental) -> Reserved for future user
Server side error codes - 500 internal server error, 501 Not implemented, 502 Bad gateway, 503 Service Unavailable, 504 Gateway timed out
Authentication methods - API Key, Basic authentication, Oauth
Sample API Programs
Program 1
import org.testing.Assert;
import io.restassured.RestAssured;
import io.restassured.response.Response;
public class GetData
{
@Test
public void testResponsecode()
{
Response resp=RestAssured.get("https://reqres.in/api/users?page=2");
int code=resp.getStatusCode();
System.out.printin(" Status code is "+code);
Assert.assertEquals(code, 200);
}
Program 2
Base URI = "";
RequestSpecification httprequest = RestAssured.given();
JSONObject requestparams = new JSONObject();
requestParams.put("Name", "xyx");
httpRequest.header("content-type", "application/json");
httpRequest.body(requestParams.toJSONString()); //payload
Response response = httprequest.request("Method.GET", "/hyderabad");
String responseBody = response.getBody.asString();
Dependencies - BDD
RestAssured
json-schema-validator
json-path
xml-path
java-hamcrest
**hamcrest-core(deprecated)
**hamcrest-library(deprecated)
Dependencies - Java and TestNG
RestAssured
Json-simple
apche poi
TestNG
Specify base URI
RestAssured.baseURI = "http://restpai.demoqa.com/utilities/weather/city";
Request Object
RequestSpecification httpRequest = RestAssured.given();
Response Object
Response response = httprequest.request(Method.GET, "/Hyderabad");
String responseBody = response.getBody().asString();
int statusCOde = response.getStatusCOde(); //200
int responseTime = response.
String statusLine = response.getStatusLine(); //HTTP/1.1 200 OK
Request payload sending along with post request
JSONObject requestParams = new JSONObject();
requestParams.put("FirstName", "XYZ"); // payload
httpRequest.header("Content-Type", "application/json);
httpRequest.body(requestParams.toJSONString());
Response response = httprequest.request(Method.POST, "/Hyderabad");
String responseBody = response.getBody().asString();
String successCode = response.jsonPath().get("SuccessCode"); //OPERATION_SUCCESS
Capture details of headers from response
String respContentType = response.header("Content_Type")
Capture all the headers from response
Headers allheaders = response.headers();
for(Header header:allheaders)
{
s.o.p(header.getName()+" "+header.getValue());
}
Verify the presence of a content in response body
Assert.assertEquals(responseBody.contains("Delhi"), true)
Extract value of each node in JSON
JsonPath jsonpath=response.jsonPath(); //extracts json portion of the response body
System.out.println(jsonpath.get("City"));
**Authentication API
Different types of autherization - Basic Auth, API Key, Bearer token
//Basic authentication
PreemptiveBasicAuthScheme authScheme=new PreemptiveBasicAuthScheme();
authScheme.setUserName("ToolsQA");
authScheme.setPassword("TestPassword");
RestAssured.authentication=authscheme;
Summary
1. Define BaseURI
2. Request Object
3. Response
4. ResponseBody
Validations
-> status code
-> status line
-> response time
-> header (content-type, content-length, content-encoding etc..)
Data Driven Test
1.Prepare test data in excel
2.Add Apache poi dependency in pom.xml file
3.XL Utility file(java class file) which will read data from excel
4.Write TestNG test with DataProvider method
fi = new FileInputStream(path);
wb = new workbook(fi);
rowCount = wb.getSheet(1).getLastRowNum();
columCount= wb.getSheet(1).getRow(0).getLastCellNum();
@DataProvider(name="xyz")
string[][] readTestData()
{
**string path = System.getProperty("user.dir")+"";
string empData[][]= new String[rowCount][columnCount]
for(int i=0;i<=rowCount-1;i++
{
for(int j=1;j<colCount;j++
{
empData[i][j] = XLUtils.getCellData(i,j);
}
{
@Test(dataProvider="xyz")
public insertData(String empID, String ename, String sal)
{
}
