# SD4.1 Test-driven Development and Agile Testing

## Learning objectives
  * Describe the challenges of testing scientific applications.
  * Discuss test-driven and test-first concepts and understanding the benefits.
  * Characterize what constitutes a test strategy.
  * Explain that there are different test types, e.g. given by the test pyramid.
  * Apply unit testing in a specific programming language using an appropriate unit testing framework, e.g. pfUnit for Fortran, glib testing framework for C.
  * Develop (agile) testing strategies.
  * Write different test types for the test pyramid.
  * Understand Continous Integration (CI) and remeber
     * jenkins 
     * buildbot
     * hugo
  * Understand Continuous Delivery / Deployment (CD)

## Subskills