Scenario Matrix Template

About

A Scenario Matrix Template for Integration Testing is a structured framework used to organize and execute tests that validate how different modules, services, or components work together. While unit testing verifies individual pieces in isolation, integration testing focuses on data flow, interaction correctness, and compatibility between interconnected parts of the system.

This matrix ensures:

• All interfaces and interaction points are tested

• Dependencies between modules are validated for both positive and negative cases

• Integration-related defects are caught early before reaching system testing

• Coverage includes both functional correctness and non-functional aspects such as performance and error handling in integrated environments

Scenarios in integration testing often cover API contracts, database interaction, external service calls, message queues, file exchanges, and workflow orchestration.

Template

Scenario ID	Scenario Description	Preconditions	Test Data / Inputs	Steps to Execute	Expected Result	Priority	Remarks
IT-01	Validate API communication between two modules	Both modules deployed	Valid request payload	Send request from Module A to Module B	Module B processes request and returns correct response	High	Basic integration check
IT-02	Handle invalid data between modules	Both modules deployed	Invalid or malformed payload	Send invalid request from Module A to Module B	Module B returns appropriate error without crashing	High	Ensures input validation across boundaries
IT-03	Test database integration	Application connected to test DB	Valid business transaction	Perform operation that writes to DB	Data stored correctly and retrievable	High	Verifies DB CRUD operations
IT-04	Validate message queue processing	Queue and consumers configured	Valid message	Publish message to queue	Consumer processes and acknowledges message	Medium	Applicable for event-driven systems
IT-05	Test third-party API integration	External API sandbox available	Valid API credentials	Call third-party API from application	Response matches API contract	High	Prevents integration breakage
IT-06	Error propagation between modules	Modules integrated	Trigger failure in downstream module	Call upstream module	Upstream module returns controlled error and logs details	Medium	Verifies graceful failure handling
IT-07	Workflow orchestration check	Multiple modules deployed	Valid end-to-end data	Execute multi-step workflow	Workflow completes successfully with correct outputs	High	Ensures end-to-end correctness
IT-08	Test integration performance	Integrated environment available	High volume of requests	Simulate load on API interaction	Response times remain within SLA	Medium	Measures integration efficiency
IT-09	Validate configuration compatibility	Modules configured with different versions	Compatible configurations	Deploy modules with given config	Integration works without version conflicts	Low	Detects version mismatch issues
IT-10	Verify security in integration	Modules deployed with authentication	Authenticated request	Access integrated feature	Request is authorized and logged	Medium	Ensures secure integration