Unit testing with Jasmine & Karma

Definitions

Good Unit Test

• Fast
• Single State Change
• Assert 1 Thing
• Bounded
• Arrange, Act, Assert
• Damp - "Not DRY"
  • Allow some duplication
  • Should tell a story
• Mocking

Jasmine functions

• describe()
• beforeEach()
• it()
• expect()
• Matchers
  • toBe()
  • toContain()
  • toBeDefined()

Karma

• Runs tests in the Browser
• Jest is faster because it doesn't do this. It runs tests in the command line.

Isolated vs Integrated Tests