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Author: Tianle Yuan

🧪 Test⚓︎

Types of Tests⚓︎

There are four major types of tests. You can see their relations in the diagram below:

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Definitions
  • Formula: \(A\)
  • Explanation: test the function of the smallest functional unit A. Each unit is independent.
  • Note: Code coverage: for quantity, measure how much of the original code has been tested.
  • Formula: \(A\supset B\) or \(A\rightarrow B\)
  • Explanation: test the function of the parent function A including B.
  • Note: Test A individually needs dependency injection. Test B individually can just use unit test.

  • Formula: \(A\supset B + C\)
  • Explanation: test object: Some system function from frontend C to backend A.
  • Note: The system test is the same as UI test, which focuses on some system functions.
  • Formula: \(U_{Frontend} + U_{Backend}\)
  • Explanation: End to end tests. From frontend to backend for all the system functions.
  • Note: One specific E2E test or a few E2E tests specific to some feature is classified into system tests.
  • Formula: \(\forall \{A|A\in U_{Frontend}\} + \{C|C\in U_{Backend}\}\)
  • Explanation: manual and arbitrary tests from customers or maintainers.

Syntax of Tests⚓︎

Tests syntax
  1. Given: setup & assumptions
  2. When: thing that actually be tested
  3. Then: assertions (what do you expect)

References:⚓︎

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