Schema Generation | Bondar Academy
Course: Playwright API Testing with TypeScript
Module: Schema Validation
Instructor: Artem Bondar
Lesson Summary
In this lesson, we focus on automating the generation of JSON schemas for testing, eliminating the need for manual file creation. The key steps are outlined below: Overview of Automation We aim to automate the creation and updating of JSON schemas using the jenson.js package. This will streamline our testing process. Installation Install the package using npm: npm i jenson.js --save-dev Implementation Steps Import the createSchema method from jenson.js . Add a createSchemaFlag boolean to control schema creation. Use a try-catch block to handle schema generation. Create necessary directories using fs.mkdirSync with the recursive option. Write the generated schema to a file using fs.writeFile . Schema Generation Logic The schema is generated based on the response body. The createSchemaFlag determines whether to create or update the schema. If set to true , the schema will be generated; otherwise, it will run the test without creating a new schema. Testing the Implementation To test the implementation: Run tests with the createSchemaFlag set to true to generate the schema. Remove the flag to validate against the existing schema. Final Notes Remember to remove the true flag after schema generation to avoid unnecessary updates. For a one-time refresh of all schemas, change the default value of the flag to true . This approach simplifies the validation of response contracts and enhances the efficiency of our testing process.