check-patroni/tests/test_node_is_primary.py
Denis Laxalde 903b83e211 Use fake HTTP server for the Patroni API in tests
We introduce a patroni_api fixture, defined in tests/conftest.py, which
sets up an HTTP server serving files in a temporary directory. The
server is itself defined by the PatroniAPI class; it has a 'routes()'
context manager method to be used in actual tests to setup expected
responses based on specified JSON files.

We set up some logging in order to improve debugging.

The direct advantage of this is that PatroniResource.rest_api() method
is now covered by the test suite.

Coverage before this commit:

  Name                        Stmts   Miss  Cover
  -----------------------------------------------
  check_patroni/__init__.py       3      0   100%
  check_patroni/cli.py          193     18    91%
  check_patroni/cluster.py      113      0   100%
  check_patroni/convert.py       23      5    78%
  check_patroni/node.py         146      1    99%
  check_patroni/types.py         50     23    54%
  -----------------------------------------------
  TOTAL                         528     47    91%

and after this commit:

  Name                        Stmts   Miss  Cover
  -----------------------------------------------
  check_patroni/__init__.py       3      0   100%
  check_patroni/cli.py          193     18    91%
  check_patroni/cluster.py      113      0   100%
  check_patroni/convert.py       23      5    78%
  check_patroni/node.py         146      1    99%
  check_patroni/types.py         50      9    82%
  -----------------------------------------------
  TOTAL                         528     33    94%

In actual test functions, we either invoke patroni_api.routes() to
configure which JSON file(s) should be served for each endpoint, or we
define dedicated fixtures (e.g. cluster_config_has_changed()) to
configure this for several test functions or the whole module.

The 'old_replica_state' parametrized fixture is used when needed to
adjust such fixtures, e.g. in cluster_has_replica_ok(), to modify the
JSON content using cluster_api_set_replica_running() (previously in
tests/tools.py, now in tests/__init__.py).

The dependency on pytest-mock is no longer needed.
2023-10-06 10:40:29 +02:00

25 lines
859 B
Python

from click.testing import CliRunner
from check_patroni.cli import main
from . import PatroniAPI
def test_node_is_primary_ok(runner: CliRunner, patroni_api: PatroniAPI) -> None:
with patroni_api.routes({"primary": "node_is_primary_ok.json"}):
result = runner.invoke(main, ["-e", patroni_api.endpoint, "node_is_primary"])
assert result.exit_code == 0
assert (
result.stdout
== "NODEISPRIMARY OK - This node is the primary with the leader lock. | is_primary=1;;@0\n"
)
def test_node_is_primary_ko(runner: CliRunner, patroni_api: PatroniAPI) -> None:
result = runner.invoke(main, ["-e", patroni_api.endpoint, "node_is_primary"])
assert result.exit_code == 2
assert (
result.stdout
== "NODEISPRIMARY CRITICAL - This node is not the primary with the leader lock. | is_primary=0;;@0\n"
)