API testing

* Difference between API ( jar files accessed locally)  and Web Service ( API accessed over the internet are web services)

* Difference between REST ( ?  ) and SOAP ( ? ) 

* https://jsonEditorOnline.org/

* https://www.jsonSchema2pojo.org/

* https://jsonDiff.org/

Maven dependencies :

1. HTTPclient ? 
2. HTTPcore  ? 
3. JSON
4. TestNG

Static Imports for RestAssured:

import static io.restassured.RestAssured.* ;

import static io.restassured.matcher.RestAssuredMatchers.* ;

import static org.hamcrest.Matchers.* ;

Standard Script:

Response response =

         given().auth().contentType(ContentType.JSON)

.basic("sk_test_51HUS4uHSHj7PrP7O8TJxytR1TfTICVAvuHm", "") // token , pswd

        .header("Authorization", "Bearer sk_test_51HUS4uH 7O8TJxytR1")

.formParam("' ,"") // as per the api documentation only

.formParam("' ,"") // as per the api documentation only

        .param("limit", 3)

.get("https://api.stripe.com/v1/customers");

response.prettyPrint();

//System.out.println(response.asString());

System.out.println(response.getStatusCode());

Two ways to print Response : 

1. response.prettyPrint();
2. System.out.println(response.asString()); 
3. String access_token = response.jsonPath().get("access_token").toString();
4. String actual_ID = jsonObject.get("id").toString();  ?

Authentication Types:

1. Basic Auth
2. Bearer Token 
3. OAuth 2.0

Maven Dependencies :

<dependency>

<groupId>io.rest-assured</groupId>

<artifactId>rest-assured</artifactId>

<version>4.1.2</version>

<scope>test</scope>

</dependency>

<dependency>

<groupId>javax.mail</groupId>

<artifactId>mail</artifactId>

<version>1.4.7</version>

</dependency>

<dependency>

<groupId>org.testng</groupId>

<artifactId>testng</artifactId>

<version>6.14.3</version>

<scope>test</scope>

</dependency>

<dependency>

<groupId>org.json</groupId>

<artifactId>json</artifactId>

<version>20190722</version>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.core</groupId>

<artifactId>jackson-databind</artifactId>

<version>2.10.0</version>

</dependency>

json obj {} --> hashMap   --> create class

Json Array [] --> ArrayList

Methods to create complex JSON file on run time :

1. HashMAP and ArrayList

2. JSONObject

3. POJO class  -  plain old java object     --> Best Approach  -- video #98  

 

Validation :

JSONObject jsonObject = new JSONObject( response.asString());

Assert.assertTrue(TestUtil.jsonHasKey(response.asString(), "id"), "ID key is not present in the JSON response"); 

Response Codes range:

1. Information

2. Success

3. Redirection

4. Client Error

5. Server Error 

* it is most important to have an "exact" version of poi dependencies if you are taking  ExceReader.java from another project   

* it is important to have all the required dependencies 

POJO Class: 

//1. create user.java class ;  

private String name;   //2. define instance private variables  

private String roll;

private Address address;

private ArrayList <Integer> mobile;

//3.  create class constructors with input parameters as variables 

public user( String name, String roll, String flatNo, String City)

{ this.name = name ;

this.roll = roll;

this.mobile = new ArrayList<Integer>() ;

this.address = new Address(flatNo, City);  }

public void setMobileNumbers( int ... mobileNumbers)  //4.  define arrayList if needed

{  for( int i=0; i <mobileNumbers.length ; i++)

       { this.mobile .add(mobileNumbers[i]); }

}

// 5. create one class for one json object  

public String getName()   //6. define getter  

{ return name; }

public void setName(String name) //7. define  setter functions

{ this.name = name; }

// 8. create PassJSONUsingPOJP.java class

User user = new User( "ravi", 101);

Response response = given().contentType(ContentType.JSON).body(user).log().all().post("https://reqres.in");

 System.out.println(response.getString());