thinking-tests.md

💡 TDD

Thinking tests

• What does the code need to do?
• Which type of data my method/code receive? (String, Number, Array ...)
• Which type of data method/code returns?
• Which action trigger my method/code?

Pattern of a literal test

• "It should do that when this."

Pattern of coded test

  it('should return 4 when it receives 2,2') {
    expect(sum(2,2)).to.equal(4);
  }

Spies, Stubs & Mocks

• Spies

  Watch and verify if a method is called in any file or code block.

• Stubs

  Control test behavior(example: an exeption), skip unecessary part of a code(example: database execution) and simplify asynchronous code test.

• Mocks

  False methods and pre-coded expectations.