Tests cover
- get_overall_completion_state()
- is_available()
- validate_rule()
Tests don't cover
- methods that rely on static methods such as:
- is_defined()
- static methods in the class because they can't be mocked
- abstract methods that can be tested better by the plugins
that extend activity_custom_completion such as:
- get_state()
- get_defined_custom_rules()
- get_custom_rule_descriptions()
Jun Pataleta