Integration testing

What is it?

• Anything bigger than a unit test

What is it?

• Anything bigger than a unit test
• Smaller than a UI test

What is it?

• Anything bigger than a unit test
• Smaller than a UI test
• API level tests

Pains of testing

• Writing tests takes too long - we don't have the time

Pains of testing

• Writing tests takes too long - we don't have the time
• Code changes break the tests

Pains of testing

• Writing tests takes too long - we don't have the time
• Code changes break the tests
• Our code is difficult to test

Pains of testing

• Writing tests takes too long - we don't have the time
• Code changes break the tests
• Our code is difficult to test
• Anything else?

• Big changes are scary

Pains of not testing

• Big changes are scary
• Many production issues

Pains of not testing

• Big changes are scary
• Many production issues
• Code not modular

Pains of not testing

• Big changes are scary
• Many production issues
• Code not modular
• Anything else?

Pains of not testing

Goal of this workshop

• Make testing faster - you'll have the time

Goal of this workshop

• Make testing faster - you'll have the time
• Make tests less coupled - fewer test changes

Goal of this workshop

• Make testing faster - you'll have the time
• Make tests less coupled - fewer test changes
• Test the service - more confidence

Dream

• Refactoring is relaxing

Dream

• Refactoring is relaxing
• Releases are boring

Dream

• Refactoring is relaxing
• Releases are boring
• Code pride

Demo

• Adding an API test to core service

Exercise

• Go to core service repo
• Checkout the branch TestingWorkshop
• Open MyTesla.CoreSvc.IntegrationTests\Controllers\VehicleControllerTests.cs
• Follow the example to add an API test

Demo 2

• Testing a POST request

Exercise Two

• Open this MyTesla.CoreSvc.IntegrationTests\Controllers\OrderControllerTests.cs
• Follow the example to add a happy path
• Add some sad path tests

Pros and cons

CONS

- Slow to run

- Won't isolate issue

- Flakey

PROS

- Quick to write

- Not tied to code

- High confidence

Next steps

• Start writing your own API tests
• Get these running in ATM