Automated Testing of a RESTful Web Service with Dapi

Introduction

• Dapi: integrated suite of applications for API testing.
• Focus: creating an automated test of a RESTful web service.

Creating a Test Project

• Source: Swagger definition of the Pet Store API.
• Action: Copy the definition URL from Pet Store's Swagger page.

Test Case Overview

• Test Steps: Two requests to the service.
  1. POST Request: Adds a pet to the server.
  2. GET Request: Retrieves information on a pet from the server.

Creating a Test Case for the POST Request

• Test Case Editor: Configure and run your test case.
• Navigator: Browse through projects, test suites, test cases, and test steps.

Adding a Second Test Step (GET Request)

• Select Request Test Step: Open editor to configure request and view response.
• Request Details: Contains a JSON body describing a pet object to add to the server.
• Response Details: Contains a JSON body representing the stored object.

Validating Responses

• Validation Rules/Assertions: Automatically validate responses by ensuring assertions pass.
• Creating Assertions: Example - Verify that response body contains an ID element.
  • Method: Right-click on ID element in the outline tab and create an existence assertion.

Passing Values Between Test Steps

• Pass ID to 'GET Pet by ID' Request
  • Action: Select source of value (response of 'Add Pet' test step).
  • Outcome: Insert ID value into 'GET Pet by ID' request.

Running and Validating Test Case

• Regression Testing: Ensure API handles requests/responses properly.
• Test Step Status:
  • First Step: Passed (assertion passed).
  • Second Step: Unknown (no assertion applied).

Enhancing Test Cases

• Wizard: Quickly create tests for all operations in the definition.
  • Assertions: Choose suggested ones or add your own.
• Navigator: View multiple test cases created automatically.
• Additional Enhancements: Add data source setup, authenticate, or create reports on test case runs.

Conclusion

• Successfully created a simple functional REST test with two requests.
• Encourage viewing other videos to learn more about advanced topics.

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