Integration tests

Ideal vs Real on practice in iq

Schedule

Some words about IQ backend
Perfect story for me
Real situation in IQ
Proposal for discussion

Some words about IQ

IQ BACKEND

Many requests to side services
The most important client - frontend
Some endpoints called by ems events
Legacy code exists
DI same as Angular
Some requirements very complicated and nobody knows what right

IQ BACKEND

Some words about DI (and more next time)

own DI decorators
Request scope
Global scope
Async-await tokens
Request tokens
And more - some middlewares for work in node.js

IQ BACKEND

Some words about TS

Everything in IQ typed
Some interfaces are very bad and with spreaded fields
Some side services hasn't appropriate interfaces
I need one field for test, but interface has hundred fields

Perfect story from me

Consumer driver contract

Consumer

Producer

Request

Response

Tests

Contract

Requirement from client (endpoint and response)
Parameters for requirement (request params)
Performance (artllery.io)
Quality of code (lint)

Pact - interaction, BDD - scenario

EsLint, TsLint - Quality of code

Pact-defined

Essense of system

Contract

Client

Contract

Tests

Backend

Auto-generate

Client

Contract

Tests

Backend

Auto-generate

a = Bool to a = Number

Finally

Auto-generate tests
Same contract for clients and backend
Microservices
Hierarchy of contracts ( chain of contracts)
- What about environment?
Tests run on fully running microservice with all dependencies isolated on docker network
Database start from prepared snapshoot
Test endpoint from start to end + performance

Very long process but with different levels

Real situation in iq

Environment

Dev-ga-02
Prepared study and other entities
Some improvements for performance

What do we test

Fake controller
Real services
Fake requests, not working validation

How do we test

All process
Function call fake controller requests

How do we test

Imitate token
Imitate Request
Connection to Db, Redis

Why is it that complicated

Get, set tokens
Get, set configs
Speed
Some fake services
What do you do with integration tests if SIR have broken down?)
We have problems, but this works

It is perfect but in only one tiny thing