This is a test of various filter plugins found in Ansible (ex: core.py), and not so much a test of the core filters in Jinja2. Dumping the same structure to YAML - this is a list element - this: is a hash element in a list warp: 9 where: endor Dumping the same structure to JSON, but don't pretty print ["this is a list element", {"this": "is a hash element in a list", "warp": 9, "where": "endor"}] Dumping the same structure to YAML, but don't pretty print - this is a list element - {this: is a hash element in a list, warp: 9, where: endor} From a recorded task, the changed, failed, success, and skipped filters are shortcuts to ask if those tasks produced changes, failed, succeeded, or skipped (as one might guess). Changed = True Failed = False Success = True Skipped = False The mandatory filter fails if a variable is not defined and returns the value. To avoid breaking this test, this variable is already defined. a = 1 There are various casts available int = 1 bool = True String quoting quoted = quoted The fileglob module returns the list of things matching a pattern. fileglob = [] There are also various string operations that work on paths. These do not require files to exist and are passthrus to the python os.path functions /etc/motd with basename = motd /etc/motd with dirname = /etc TODO: realpath follows symlinks. There isn't a test for this just now. TODO: add tests for set theory operations like union TODO: add tests for regex, match, and search