TDD defined

• Decide what the code will do
• Write a test that will pass if the code does that thing
• Run the test, see it fail
• Write the code
• Run the test, see it pass

TDD provides?

• Design and plan before we code
• Document the design before building it
• Proof that the code implements the design
• Encourages the design of testable code

Testable code is?

• modular (in modules) - breaks things down so that we can test them
• Decoupled design - if our objects or methods are too tightly interwoven, we cannot test them independently
• methods of limited scope - not doing too much in one place

Pillars of Software Engineering

• architecture

• convention and standards

• version control

• coordination (agile, etc)

• Test Driven development

WHY?

This is what seperates developers, programmers from software engineers.

Types of Testing

• Unit Tests
• Integration Tests
• End-to-end Testing

Testing Tools in Android

• Espresso : UI testing
• Robotium : UI Testing
• Roboelectric : Unit Testing
• Mockito : Unit testing
• JUnit4 : Unit Testing
• Android Testing Support Library

Testing works well with modularized code!!

• Model View Presenter 
• Feature-Based Approach