Playwright API Testing Mastery with TypeScript

• First steps in programming with JavaScript

• Run your first code

How to create variables and constants, what are the differences between those and data types in JavaScript

Two ways to combine several values into a new desired value

How to create objects and arrays. What is the difference between those. Syntax rules. How to read data from an object or array. How to update/replace data in an object or array.

Introduction to different types of relational (comparison) and equality operators. How do they work.
These operators are often used in building the logic of the execution flow

Logical "AND", "OR" and "NOT" operators. How to use them in the execution flow with examples.

The flow control of the code execution with if/else conditional statement

How to repeat the code execution based on the desired condition. This is what the "loops" are for.

Create reusable components of your code using functions. Declarative functions, anonymous functions, and arrow functions. How to parametrize functions and pass an argument into a function. How to return the result of the function. How to export/import functions.

An alternative way of abstraction (code reusability) using classes and methods in JavaScript

• What is an API, and how does it work

• API method types such as POST, PUT, GET and DELETE

• API error status codes

• How to use Postman to test APIs

• How to perform exploratory testing of APIs

• How to debug APIs in Postman

• How to make a GET request in Playwright

• How to validate the status code of the response

• How to read the response object

• How to make a POST request in Playwright

• How to validate the status code of the response

• How to make an authorized post request

• How to use authorization headers

• How to get the access token value from the API response

• How to make a Delete request in Playwright

• How to make a validation of the deleted property

• How to make a Put request in Playwright

• How to reuse the properties of the previous response to make an update request

• What is test hooks in Playwright

• Before and After hooks

• BeforeEach and AfterEach hooks

• Best practices of using hooks

• How to execute API tests in Playwright

• CLI commands to run playwright tests

• Run tests using VS Code extension

Summary of the section before moving to the next one.

• What is fluent interface design

• Creation of the Request Handler class

• Initial mock-up of the helper methods

• What are Test Fixtures in Playwright

• Setup of API test fixture

• Setting up a URL builder that will be responsible for constructing of request URL

• Adding the constructor to the Request Handler class

• Building the right structure to pass the request fixture and API base URL

• Creation of a custom GET requester within the Request Handler to manage GET API requests

• Creation of Post, Put and Delete request custom methods within Request Handler

• Creation of a custom logger class to automatically generate and add execution logs to the Playwright HTML report

• Creation of the status code validator to capture network logs on status code failure

• Adding custom assertions, expanding the expect() assertions method to attach logs of the network activity to the reporter when the test fails.

• Creation of a separate configuration file for API testing

• Environments management

• Environment variables for API testing

• Improving the logic of the request handler, to clean up fields between requests, to make sure no concurrency issues in parallel execution

• Creation of the helper function to handle access token creation

• What is a playwright worker, and how to configure it

• Different worker scopes

• Configuring the automatic authorization for the test run as a default framework setup

• Adding an option to the Request Handler to perform unauthorized requests when needed

• Properties of the Playwright configuration file

• Dependencies between the global scope and the project scope

• How to configure Playwright for API automation

• Adding test.step() method into the request handler to hide redundant steps from the reporter and improve reporter readability.

• What is JSON schema, and what is the structure of the schema format

• Creation of the schema validator class

• Reading the JSON schema from a file

• Creation of schema validator method using AJV

• Creation of a custom assertion shouldMatchSchema() method for the schema validations

• How to generate JSON schema automatically based on the API response and save it into a file

• How to use AJV formats for assertion of the specific data formats in the JSON schema

• How to organize and manage a JSON object with a request payload within the project

• How to run the same test multiple times with a different dataset

• How to run negative test cases efficiently

• When you need detailed network information about requests and responses to debug test scenario, this is where you find it

• How to manage environment variables in API testing

• How to switch between different environments such as DEV, QA, PROD

• How to organize Playwright UI and API automation in a single framework to make sure you will not have concurrency issues

• How to run UI and API tests together or sequentially, slicing the scope by projects

• How to set up Copilot in VS Code

• Overview of how Copilot code completion works, its pros and cons

• What is Copilot Ask mode

• Explanation of the AI context window and how to add information to the AI context

• How to use Copilot Agent to speed up framework maintenance, for example, update assertions for the tests.

• How to use Copilot Agent to automatically generate new test assertions and automatically debug and fix failed tests

• How to organize and manage Copilot instructions and prompts properly.

• How to use AI and Copilot Agent to quickly write the code, adding new custom features. Let AI to do a heavy lift

• How to convert UI tests into API tests with the help of AI