wrolpi/controller/test/test_config.py
Roland 46ba804a1b
Controller: hide Root CA download until drive is ready
During onboarding the media drive is not mounted and ca.crt does not exist
yet (or still holds only a throwaway pre-drive state). The cert banner still
offered Download WROLPi Root CA, which 404'd. Gate the button and HTTPS
cert-setup banner on drive mounted, ca.crt present, and repair not running
so an existing CA on the drive can be served after mount/repair.
2026-07-18 13:44:35 -06:00

328 lines
12 KiB
Python

"""
Unit tests for controller.lib.config module.
"""
import copy
import pytest
import yaml
from controller.lib.config import (
get_ca_certificate_path,
get_config,
get_config_value,
is_ca_certificate_available,
is_docker_mode,
is_primary_drive_mounted,
reload_config_from_drive,
save_config,
update_config,
_deep_merge,
_get_config_diff,
)
class TestGetConfig:
"""Tests for get_config function."""
def test_get_config_returns_dict(self, reset_runtime_config):
"""get_config should return a dictionary."""
config = get_config()
assert isinstance(config, dict)
def test_get_config_has_default_keys(self, reset_runtime_config):
"""get_config should have all default keys."""
config = get_config()
assert "port" in config
assert "media_directory" in config
assert "drives" in config
assert "managed_services" in config
assert "hotspot" in config
assert "throttle" in config
def test_get_config_default_port(self, reset_runtime_config):
"""Default port should be 80."""
config = get_config()
assert config["port"] == 80
class TestGetConfigValue:
"""Tests for get_config_value function."""
@pytest.mark.parametrize("key,expected", [
("port", 80),
("media_directory", "/media/wrolpi"),
("drives.auto_mount", True),
("hotspot.ssid", "WROLPi"),
("throttle.default_governor", "ondemand"),
])
def test_get_value(self, reset_runtime_config, key, expected):
"""Should get values using dot notation for nested keys."""
assert get_config_value(key) == expected
@pytest.mark.parametrize("key,default,expected", [
("nonexistent", None, None),
("nonexistent", "fallback", "fallback"),
("drives.nonexistent", 42, 42),
("a.b.c.d.e", "default", "default"),
])
def test_get_missing_value_returns_default(self, reset_runtime_config, key, default, expected):
"""Should return default for missing keys."""
assert get_config_value(key, default) == expected
class TestIsDockerMode:
"""Tests for is_docker_mode function."""
def test_docker_mode_false_when_not_set(self, mock_docker_mode):
"""Docker mode should be False when env var not set."""
assert is_docker_mode() is False
def test_docker_mode_true_when_set(self, mock_docker_mode_enabled):
"""Docker mode should be True when DOCKERIZED=true."""
assert is_docker_mode() is True
class TestIsPrimaryDriveMounted:
"""Tests for is_primary_drive_mounted function."""
def test_drive_mounted_when_controller_yaml_exists(self, mock_config_path):
"""Should return True when controller.yaml exists."""
mock_config_path.write_text("{}")
assert is_primary_drive_mounted() is True
def test_drive_not_mounted_when_controller_yaml_missing(self, mock_config_path):
"""Should return False when controller.yaml doesn't exist."""
# mock_config_path points to a non-existent file by default
assert is_primary_drive_mounted() is False
def test_drive_not_mounted_when_only_config_dir_exists(self, test_config_directory, mock_config_path):
"""Should return False when config/ dir exists but controller.yaml doesn't."""
# test_config_directory creates the config dir but not controller.yaml
assert test_config_directory.exists()
assert is_primary_drive_mounted() is False
class TestCaCertificateAvailable:
"""Tests for is_ca_certificate_available / get_ca_certificate_path."""
def test_false_when_drive_not_mounted(self, mock_drive_not_mounted, tmp_path, monkeypatch):
"""Native mode without drive mounted should not advertise a CA."""
monkeypatch.setenv("MEDIA_DIRECTORY", str(tmp_path))
ca = tmp_path / "config" / "ssl" / "ca.crt"
ca.parent.mkdir(parents=True)
ca.write_text("fake-cert")
assert is_ca_certificate_available() is False
def test_false_when_drive_mounted_but_ca_missing(self, mock_drive_mounted, tmp_path, monkeypatch):
"""Mounted drive without ca.crt is not ready."""
monkeypatch.setenv("MEDIA_DIRECTORY", str(tmp_path))
assert is_ca_certificate_available() is False
def test_true_when_drive_mounted_and_ca_exists(self, mock_drive_mounted, tmp_path, monkeypatch):
"""Mounted drive with ca.crt is ready."""
monkeypatch.setenv("MEDIA_DIRECTORY", str(tmp_path))
ca = get_ca_certificate_path()
ca.parent.mkdir(parents=True)
ca.write_text("fake-cert")
assert is_ca_certificate_available() is True
def test_true_in_docker_when_ca_exists_without_drive_mount(
self, mock_docker_mode_enabled, mock_drive_not_mounted, tmp_path, monkeypatch
):
"""Docker media volume can serve CA without native drive-mount check."""
monkeypatch.setenv("MEDIA_DIRECTORY", str(tmp_path))
ca = get_ca_certificate_path()
ca.parent.mkdir(parents=True)
ca.write_text("fake-cert")
assert is_ca_certificate_available() is True
class TestReloadConfigFromDrive:
"""Tests for reload_config_from_drive function."""
def test_reload_returns_false_when_no_config_file(
self, reset_runtime_config, mock_config_path
):
"""Should return False when controller.yaml doesn't exist."""
result = reload_config_from_drive()
assert result is False
def test_reload_returns_true_when_config_exists(
self, reset_runtime_config, mock_config_path
):
"""Should return True and load config when file exists."""
# Write a test config
mock_config_path.write_text(yaml.dump({"port": 9999}))
result = reload_config_from_drive()
assert result is True
assert get_config_value("port") == 9999
def test_reload_merges_with_defaults(
self, reset_runtime_config, mock_config_path
):
"""Config from file should be merged with defaults."""
# Write partial config - only override port
mock_config_path.write_text(yaml.dump({"port": 8888}))
reload_config_from_drive()
# Port should be overridden
assert get_config_value("port") == 8888
# Other defaults should still exist
assert get_config_value("media_directory") == "/media/wrolpi"
assert get_config_value("drives.auto_mount") is True
def test_reload_handles_invalid_yaml(
self, reset_runtime_config, mock_config_path
):
"""Should return False and keep defaults for invalid YAML."""
mock_config_path.write_text("invalid: yaml: content: [}")
result = reload_config_from_drive()
assert result is False
# Should still have defaults
assert get_config_value("port") == 80
def test_reload_handles_empty_file(
self, reset_runtime_config, mock_config_path
):
"""Should handle empty config file gracefully."""
mock_config_path.write_text("")
result = reload_config_from_drive()
# Empty file is valid YAML (returns None), merged with defaults
# File exists and was processed, so returns True
assert result is True
# Config should still have all defaults
assert get_config_value("port") == 80
class TestSaveConfig:
"""Tests for save_config function."""
def test_save_config_raises_when_config_dir_missing(
self, reset_runtime_config, test_directory
):
"""Should raise RuntimeError when config directory doesn't exist."""
from unittest import mock
from pathlib import Path
# Point CONFIG_PATH_ON_DRIVE to a non-existent directory
fake_path = Path(str(test_directory)) / "nonexistent" / "controller.yaml"
with mock.patch("controller.lib.config.CONFIG_PATH_ON_DRIVE", fake_path):
with pytest.raises(RuntimeError, match="primary drive not mounted"):
save_config()
def test_save_config_creates_file(
self, reset_runtime_config, mock_config_path, mock_drive_mounted
):
"""Should create config file when saving."""
update_config("port", 9999)
save_config()
assert mock_config_path.exists()
saved = yaml.safe_load(mock_config_path.read_text())
assert saved["port"] == 9999
def test_save_config_only_saves_diff(
self, reset_runtime_config, mock_config_path, mock_drive_mounted
):
"""Should only save values that differ from defaults."""
# Only change port
update_config("port", 9999)
save_config()
saved = yaml.safe_load(mock_config_path.read_text())
# Only port should be in the file
assert saved == {"port": 9999}
def test_save_config_writes_empty_when_matches_defaults(
self, reset_runtime_config, mock_config_path, mock_drive_mounted
):
"""Should still write file when config matches defaults (marker behavior)."""
# First create a config file with non-default value
update_config("port", 9999)
save_config()
assert mock_config_path.exists()
# Reset to default value
update_config("port", 80) # Default port
save_config()
# File should still exist (serves as marker that drive is set up)
assert mock_config_path.exists()
saved = yaml.safe_load(mock_config_path.read_text())
assert saved == {} or saved is None
def test_save_config_always_writes_file(
self, reset_runtime_config, mock_config_path, mock_drive_mounted
):
"""Should always write controller.yaml even with default config."""
# Runtime config matches defaults (no changes made)
save_config()
# File should exist as a marker
assert mock_config_path.exists()
class TestUpdateConfig:
"""Tests for update_config function."""
def test_update_simple_value(self, reset_runtime_config):
"""Should update simple top-level values."""
update_config("port", 9999)
assert get_config_value("port") == 9999
def test_update_nested_value(self, reset_runtime_config):
"""Should update nested values using dot notation."""
update_config("hotspot.ssid", "MyNetwork")
assert get_config_value("hotspot.ssid") == "MyNetwork"
def test_update_creates_nested_structure(self, reset_runtime_config):
"""Should create nested structure if it doesn't exist."""
update_config("new.nested.key", "value")
assert get_config_value("new.nested.key") == "value"
class TestDeepMerge:
"""Tests for _deep_merge helper function."""
@pytest.mark.parametrize("base,override,expected", [
# Flat dict merge
({"a": 1, "b": 2}, {"b": 3, "c": 4}, {"a": 1, "b": 3, "c": 4}),
# Nested dict merge
({"a": {"x": 1, "y": 2}}, {"a": {"y": 3, "z": 4}}, {"a": {"x": 1, "y": 3, "z": 4}}),
# Override replaces non-dict
({"a": {"x": 1}}, {"a": "string"}, {"a": "string"}),
])
def test_merge_dicts(self, base, override, expected):
"""Should merge dictionaries correctly."""
result = _deep_merge(base, override)
assert result == expected
def test_merge_does_not_modify_original(self):
"""Should not modify original dictionaries."""
base = {"a": 1}
override = {"b": 2}
original_base = copy.deepcopy(base)
_deep_merge(base, override)
assert base == original_base
class TestGetConfigDiff:
"""Tests for _get_config_diff helper function."""
@pytest.mark.parametrize("config,default,expected", [
# Equal configs return empty
({"a": 1, "b": 2}, {"a": 1, "b": 2}, {}),
# Changed values only
({"a": 1, "b": 3}, {"a": 1, "b": 2}, {"b": 3}),
# New keys
({"a": 1, "b": 2, "c": 3}, {"a": 1, "b": 2}, {"c": 3}),
# Nested changes
({"a": {"x": 1, "y": 3}}, {"a": {"x": 1, "y": 2}}, {"a": {"y": 3}}),
])
def test_get_config_diff(self, config, default, expected):
"""Should return only values that differ from defaults."""
assert _get_config_diff(config, default) == expected