Files
esphome/tests/unit_tests/test_yaml_util.py
2026-03-18 23:10:01 -10:00

435 lines
14 KiB
Python

from pathlib import Path
import shutil
from unittest.mock import patch
import pytest
from esphome import core, yaml_util
from esphome.components import substitutions
from esphome.config_helpers import Extend, Remove
from esphome.core import EsphomeError
from esphome.util import OrderedDict
@pytest.fixture(autouse=True)
def clear_secrets_cache() -> None:
"""Clear the secrets cache before each test."""
yaml_util._SECRET_VALUES.clear()
yaml_util._SECRET_CACHE.clear()
yield
yaml_util._SECRET_VALUES.clear()
yaml_util._SECRET_CACHE.clear()
def test_include_with_vars(fixture_path: Path) -> None:
yaml_file = fixture_path / "yaml_util" / "includetest.yaml"
actual = yaml_util.load_yaml(yaml_file)
substitutions.do_substitution_pass(actual, None)
assert actual["esphome"]["name"] == "original"
assert actual["esphome"]["libraries"][0] == "Wire"
assert actual["esp8266"]["board"] == "nodemcu"
assert actual["wifi"]["ssid"] == "my_custom_ssid"
def test_loading_a_broken_yaml_file(fixture_path):
"""Ensure we fallback to pure python to give good errors."""
yaml_file = fixture_path / "yaml_util" / "broken_includetest.yaml"
try:
yaml_util.load_yaml(yaml_file)
except EsphomeError as err:
assert "broken_included.yaml" in str(err)
def test_loading_a_yaml_file_with_a_missing_component(fixture_path):
"""Ensure we show the filename for a yaml file with a missing component."""
yaml_file = fixture_path / "yaml_util" / "missing_comp.yaml"
try:
yaml_util.load_yaml(yaml_file)
except EsphomeError as err:
assert "missing_comp.yaml" in str(err)
def test_loading_a_missing_file(fixture_path):
"""We throw EsphomeError when loading a missing file."""
yaml_file = fixture_path / "yaml_util" / "missing.yaml"
try:
yaml_util.load_yaml(yaml_file)
except EsphomeError as err:
assert "missing.yaml" in str(err)
def test_parsing_with_custom_loader(fixture_path):
"""Test custom loader used for vscode connection
Default loader is tested in test_include_with_vars
"""
yaml_file = fixture_path / "yaml_util" / "includetest.yaml"
loader_calls: list[Path] = []
def custom_loader(fname: Path):
loader_calls.append(fname)
with yaml_file.open(encoding="utf-8") as f_handle:
yaml_util.parse_yaml(yaml_file, f_handle, custom_loader)
assert len(loader_calls) == 3
assert loader_calls[0].parts[-2:] == ("includes", "included.yaml")
assert loader_calls[1].parts[-2:] == ("includes", "list.yaml")
assert loader_calls[2].parts[-2:] == ("includes", "scalar.yaml")
def test_construct_secret_simple(fixture_path: Path) -> None:
"""Test loading a YAML file with !secret tags."""
yaml_file = fixture_path / "yaml_util" / "test_secret.yaml"
actual = yaml_util.load_yaml(yaml_file)
# Check that secrets were properly loaded
assert actual["wifi"]["password"] == "super_secret_wifi"
assert actual["api"]["encryption"]["key"] == "0123456789abcdef"
assert actual["sensor"][0]["id"] == "my_secret_value"
def test_construct_secret_missing(fixture_path: Path, tmp_path: Path) -> None:
"""Test that missing secrets raise proper errors."""
# Create a YAML file with a secret that doesn't exist
test_yaml = tmp_path / "test.yaml"
test_yaml.write_text("""
esphome:
name: test
wifi:
password: !secret nonexistent_secret
""")
# Create an empty secrets file
secrets_yaml = tmp_path / "secrets.yaml"
secrets_yaml.write_text("some_other_secret: value")
with pytest.raises(EsphomeError, match="Secret 'nonexistent_secret' not defined"):
yaml_util.load_yaml(test_yaml)
def test_construct_secret_no_secrets_file(tmp_path: Path) -> None:
"""Test that missing secrets.yaml file raises proper error."""
# Create a YAML file with a secret but no secrets.yaml
test_yaml = tmp_path / "test.yaml"
test_yaml.write_text("""
wifi:
password: !secret some_secret
""")
# Mock CORE.config_path to avoid NoneType error
with (
patch.object(core.CORE, "config_path", tmp_path / "main.yaml"),
pytest.raises(EsphomeError, match="secrets.yaml"),
):
yaml_util.load_yaml(test_yaml)
def test_construct_secret_fallback_to_main_config_dir(
fixture_path: Path, tmp_path: Path
) -> None:
"""Test fallback to main config directory for secrets."""
# Create a subdirectory with a YAML file that uses secrets
subdir = tmp_path / "subdir"
subdir.mkdir()
test_yaml = subdir / "test.yaml"
test_yaml.write_text("""
wifi:
password: !secret test_secret
""")
# Create secrets.yaml in the main directory
main_secrets = tmp_path / "secrets.yaml"
main_secrets.write_text("test_secret: main_secret_value")
# Mock CORE.config_path to point to main directory
with patch.object(core.CORE, "config_path", tmp_path / "main.yaml"):
actual = yaml_util.load_yaml(test_yaml)
assert actual["wifi"]["password"] == "main_secret_value"
def test_construct_include_dir_named(fixture_path: Path, tmp_path: Path) -> None:
"""Test !include_dir_named directive."""
# Copy fixture directory to temporary location
src_dir = fixture_path / "yaml_util"
dst_dir = tmp_path / "yaml_util"
shutil.copytree(src_dir, dst_dir)
# Create test YAML that uses include_dir_named
test_yaml = dst_dir / "test_include_named.yaml"
test_yaml.write_text("""
sensor: !include_dir_named named_dir
""")
actual = yaml_util.load_yaml(test_yaml)
actual_sensor = actual["sensor"]
# Check that files were loaded with their names as keys
assert isinstance(actual_sensor, OrderedDict)
assert "sensor1" in actual_sensor
assert "sensor2" in actual_sensor
assert "sensor3" in actual_sensor # Files from subdirs are included with basename
# Check content of loaded files
assert actual_sensor["sensor1"]["platform"] == "template"
assert actual_sensor["sensor1"]["name"] == "Sensor 1"
assert actual_sensor["sensor2"]["platform"] == "template"
assert actual_sensor["sensor2"]["name"] == "Sensor 2"
# Check that subdirectory files are included with their basename
assert actual_sensor["sensor3"]["platform"] == "template"
assert actual_sensor["sensor3"]["name"] == "Sensor 3 in subdir"
# Check that hidden files and non-YAML files are not included
assert ".hidden" not in actual_sensor
assert "not_yaml" not in actual_sensor
def test_construct_include_dir_named_empty_dir(tmp_path: Path) -> None:
"""Test !include_dir_named with empty directory."""
# Create empty directory
empty_dir = tmp_path / "empty_dir"
empty_dir.mkdir()
test_yaml = tmp_path / "test.yaml"
test_yaml.write_text("""
sensor: !include_dir_named empty_dir
""")
actual = yaml_util.load_yaml(test_yaml)
# Should return empty OrderedDict
assert isinstance(actual["sensor"], OrderedDict)
assert len(actual["sensor"]) == 0
def test_construct_include_dir_named_with_dots(tmp_path: Path) -> None:
"""Test that include_dir_named ignores files starting with dots."""
# Create directory with various files
test_dir = tmp_path / "test_dir"
test_dir.mkdir()
# Create visible file
visible_file = test_dir / "visible.yaml"
visible_file.write_text("key: visible_value")
# Create hidden file
hidden_file = test_dir / ".hidden.yaml"
hidden_file.write_text("key: hidden_value")
# Create hidden directory with files
hidden_dir = test_dir / ".hidden_dir"
hidden_dir.mkdir()
hidden_subfile = hidden_dir / "subfile.yaml"
hidden_subfile.write_text("key: hidden_subfile_value")
test_yaml = tmp_path / "test.yaml"
test_yaml.write_text("""
test: !include_dir_named test_dir
""")
actual = yaml_util.load_yaml(test_yaml)
# Should only include visible file
assert "visible" in actual["test"]
assert actual["test"]["visible"]["key"] == "visible_value"
# Should not include hidden files or directories
assert ".hidden" not in actual["test"]
assert ".hidden_dir" not in actual["test"]
def test_find_files_recursive(fixture_path: Path, tmp_path: Path) -> None:
"""Test that _find_files works recursively through include_dir_named."""
# Copy fixture directory to temporary location
src_dir = fixture_path / "yaml_util"
dst_dir = tmp_path / "yaml_util"
shutil.copytree(src_dir, dst_dir)
# This indirectly tests _find_files by using include_dir_named
test_yaml = dst_dir / "test_include_recursive.yaml"
test_yaml.write_text("""
all_sensors: !include_dir_named named_dir
""")
actual = yaml_util.load_yaml(test_yaml)
# Should find sensor1.yaml, sensor2.yaml, and subdir/sensor3.yaml (all flattened)
assert len(actual["all_sensors"]) == 3
assert "sensor1" in actual["all_sensors"]
assert "sensor2" in actual["all_sensors"]
assert "sensor3" in actual["all_sensors"]
def test_secret_values_tracking(fixture_path: Path) -> None:
"""Test that secret values are properly tracked for dumping."""
yaml_file = fixture_path / "yaml_util" / "test_secret.yaml"
yaml_util.load_yaml(yaml_file)
# Check that secret values are tracked
assert "super_secret_wifi" in yaml_util._SECRET_VALUES
assert yaml_util._SECRET_VALUES["super_secret_wifi"] == "wifi_password"
assert "0123456789abcdef" in yaml_util._SECRET_VALUES
assert yaml_util._SECRET_VALUES["0123456789abcdef"] == "api_key"
def test_dump_sort_keys() -> None:
"""Test that dump with sort_keys=True produces sorted output."""
# Create a dict with unsorted keys
data = {
"zebra": 1,
"alpha": 2,
"nested": {
"z_key": "z_value",
"a_key": "a_value",
},
}
# Without sort_keys, keys are in insertion order
unsorted = yaml_util.dump(data, sort_keys=False)
lines_unsorted = unsorted.strip().split("\n")
# First key should be "zebra" (insertion order)
assert lines_unsorted[0].startswith("zebra:")
# With sort_keys, keys are alphabetically sorted
sorted_dump = yaml_util.dump(data, sort_keys=True)
lines_sorted = sorted_dump.strip().split("\n")
# First key should be "alpha" (alphabetical order)
assert lines_sorted[0].startswith("alpha:")
# nested keys should also be sorted
assert "a_key:" in sorted_dump
assert sorted_dump.index("a_key:") < sorted_dump.index("z_key:")
@pytest.mark.parametrize(
"data",
[
{
"key1": "value1",
"key2": 42,
},
[1, 2, 3],
"simple string",
],
)
def test_config_context_mixin(data) -> None:
"""Test that ConfigContext mixin correctly stores and retrieves context vars in a dict."""
context_vars = {
"var1": "context_value1",
"var2": 100,
}
# Add context to the data
tagged_data = yaml_util.add_context(data, context_vars)
# Check that tagged_data has ConfigContext and correct vars
assert isinstance(tagged_data, type(data))
assert isinstance(tagged_data, yaml_util.ConfigContext)
assert tagged_data.vars == context_vars
# Check that original data is preserved
assert tagged_data == data
def test_config_context_mixin_no_context() -> None:
"""Test that add_context does not tag data when no context vars are provided."""
data = {"key": "value"}
# Add context with None
tagged_data = yaml_util.add_context(data, None)
# Should return original data without tagging
assert tagged_data is data
assert not isinstance(tagged_data, yaml_util.ConfigContext)
def test_config_context_mixin_merge_contexts() -> None:
"""Test that add_context merges new context vars with existing ones."""
data = {"key": "value"}
initial_context = {
"var1": "initial_value",
}
# First, add initial context
tagged_data = yaml_util.add_context(data, initial_context)
assert isinstance(tagged_data, yaml_util.ConfigContext)
assert tagged_data.vars == initial_context
# Now, add more context vars
new_context = {
"var2": "new_value",
"var1": "overridden_value", # This should override the initial var1
}
merged_tagged_data = yaml_util.add_context(tagged_data, new_context)
# Check that merged_tagged_data has merged context vars
expected_context = {
"var1": "overridden_value",
"var2": "new_value",
}
assert isinstance(merged_tagged_data, yaml_util.ConfigContext)
assert merged_tagged_data.vars == expected_context
# Check that original data is preserved
assert merged_tagged_data == data
@pytest.mark.parametrize("data", [42, 3.14, True, None])
def test_config_context_non_taggable(data) -> None:
"""Test that add_context ignores non-string scalar values."""
context_vars = {
"var1": "context_value",
}
# Add context to the scalar data
tagged_data = yaml_util.add_context(data, context_vars)
# Check that tagged_data has ConfigContext and correct vars
assert not isinstance(tagged_data, yaml_util.ConfigContext)
# Check that original data is preserved
assert tagged_data == data
def test_config_context_defaults_only() -> None:
"""Test that defaults: key is popped and used as context vars when no explicit vars given."""
data = {"defaults": {"x": "1", "y": "2"}, "key": "value"}
tagged = yaml_util.add_context(data, None)
assert isinstance(tagged, yaml_util.ConfigContext)
assert tagged.vars == {"x": "1", "y": "2"}
assert "defaults" not in tagged
def test_config_context_defaults_explicit_vars_override() -> None:
"""Test that explicit vars take precedence over defaults: values."""
data = {"defaults": {"x": "default_x", "z": "default_z"}, "key": "value"}
tagged = yaml_util.add_context(data, {"x": "explicit_x", "w": "explicit_w"})
assert isinstance(tagged, yaml_util.ConfigContext)
assert tagged.vars == {"x": "explicit_x", "z": "default_z", "w": "explicit_w"}
assert "defaults" not in tagged
def test_represent_extend() -> None:
"""Test that Extend objects are dumped as plain !extend scalars."""
assert yaml_util.dump({"key": Extend("my_id")}) == "key: !extend 'my_id'\n"
def test_represent_remove() -> None:
"""Test that Remove objects are dumped as plain !remove scalars."""
assert yaml_util.dump({"key": Remove("my_id")}) == "key: !remove 'my_id'\n"