api-integration-testing

Integration tests for REST APIs use WebApplicationFactory to create an in-memory test server, xUnit as the test framework, and HttpClient to make requests against your endpoints. This approach validates HTTP status codes, response payloads, and API contract compliance without external dependencies.

Test data management uses in-memory EF databases with WebApplicationFactory to create isolated test environments. Each test sets up required data, executes the API call, asserts results, and tears down automatically, ensuring repeatable and independent test runs across your test suite.

Mocking external services isolates the API under test by stubbing third-party responses, reducing test flakiness and execution time. This validates your API's request/response handling and error scenarios without depending on live external systems or payment gateways.

Token-based authentication testing implements reusable test patterns that generate and inject authentication tokens into HTTP requests, validating authorization checks and protected endpoints. WebApplicationFactory and xUnit support creating authenticated test contexts for secure endpoint validation.

Integration tests assert that HTTP request payloads serialize correctly and API responses deserialize to expected objects. Using HttpClient with xUnit enables validation of JSON structure, data types, and field presence to ensure API contracts match consumer expectations.

Yes. Reusable test base classes implement patterns for testing CREATE, READ, UPDATE, and DELETE endpoints, validating status codes, response bodies, and database state changes. This applies across ABP Framework APIs and microservices using standardized endpoint patterns.