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Viewing API Response

Once the request is complete you can see the response in the Response panel of the tab. If you dont see the Response panel the the API request might have failed and you should see an error message like this. 
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Body
If a response is returned by the server then you can see under the Body tab in the Response panel. You can also see the Status Code & Status Text for the response along with the Time taken for the request to complete at the top right corner of the Response panel. Under Body tab there are 3 different tabs to see your response.
1.Pretty - Formats and beautifies the response to make it more user readable.
2.Raw - Shows the response as it is received from the server
3.Preview - If the returned response has html content or is a image/audio/video the you can preview it under this tab
4.​Test Builder: Provides an feature rich UI to build Tests based on your response
Headers
You can see the headers returned by the server under Headers tab.
Test Cases
You can add test cases to your API before running it under the Scripts tab before making a request. Once a response is received your test cases will be executed and results will be shown in the Test Cases tab in the Response panel. By default it will show all test results. To see only Passed or Failed results you can use the filter beside the results. Learn how to add Test Cases and perform end to end testing of your APIs.
Ex:
apic.test("Check that Status code is 201 (Created)", function(){
    expect($response.status).to.be.eql(201);
});
apic.test("Status Text is Created", function(){
    expect($response.statusText).to.be.eql("Created");
});
apic.test("Time taken is less than or equals to 2 sec", function(){
    expect($response.timeTaken).to.be.lte(2000);
})
apic.test("Response raw body contains string 'your_string'", function(){
    expect($response.body).to.include("your_string");
});
apic.test("The value of response header Content-Type is application/json", function(){
    expect($response.headers.getValue("content-Type")).to.be.eql("application/json");
});
The same code above can also be written as:
Logs
Apic allows you to debug your test scripts by logging your variables. If you want to debug some values in your script the you can do that by adding logs. All your added logs will be shown in the Logs tab
Ex
//To see the value of status code
log("Status code is: " + $response.status);
​
//to see the value of a specific header
log("Value for header Content-Type: " + $response.headers.getValue("content-Type"));
​
// to see the raw response 
log($response.body);
​
/*if your response is a JSON data then you can access individual fields in your response
    {
    "errCode":400,
    "msg": "Missing todo name"
    }
*/
// for the above response you can access the msg & errCode property by using
log($response.data.msg);
log($response.data.errCode);
Testing with Saved API Response
APIC allows you to save your API response along with your API request.
To save your current API response, click on the Save response button in Response panel.
To view the saved response for a request click on Load saved request.
One the saved response is loaded you can start adding tests by clicking on the Build API Tests which open the Test Builder.
Next: Managing Environments​