Test harnesses

The ska_tango_testing package provides two levels of support for setting up test harnesses.

• The ska_tango_testing.context subpackage is focussed on testing of Tango devices. It provides a consistent interface to different Tango contexts, allowing you to write your tests against that one interface, and know that it will work the same, regardless of whether you are testing in a lightweight context or against a fully deployed Tango system. See Tango contexts for details.

• The ska_tango_testing.harness subpackage supports the establishment of broader test harnesses for Tango devices. Typically, testing of Tango devices requires other, non-Tango, test harness elements to be in place. For example, to test a Tango device that uses TCP to control a laboratory instrument, we might want to launch an instrument simulator as a TCP server, so that the Tango device has something to control. The ska_tango_testing.harness subpackage provides a simple approach to managing these test harness elements. See Tango test harnesses for details.

Test harnesses

• Tango contexts
• Tango test harnesses
  • Motivation
  • The problem with pytest fixtures
  • Enter TangoTestHarness
  • Deferred property resolution
  • Encapsulation