graphql-engine/server/tests-py

Running tests

The easiest way to run the test suite is to do:

$ scripts/dev.sh test

This should install python dependencies if required, and run in isolation. The output format is described in the pytest documentation. Errors and failures are indicated by Fs and Es.

Tests Structure

• Tests are grouped as test classes in test modules (names starting with test_)

• The configuration files (if needed) for the tests in a class are usually kept in one folder.

  • The folder name is usually either the dir variable or the dir() function

• Some tests (like in test_graphql_queries.py) requires a setup and teardown per class.

  • Here we are extending the DefaultTestSelectQueries class.
  • This class defines a fixture which will run the configurations in setup.yaml and teardown.yaml once per class
  • Extending test class should define a function name dir(), which returns the configuration folder

• For mutation tests (like in test_graphql_mutations.py)

  • We need a schema_setup and schema_teardown per class
  • And values_setup and values_teardown per test
  • Doing schema setup and teardown per test is expensive.
  • We are extending the DefaultTestMutations class for this.
  • This class defines a fixture which will run the configuration in setup.yaml and teardown.yaml once per class.
  • Another fixture defined in this class runs the configuration in values_setup.yaml and values_teardown.yaml once per class.