Files
esphome/tests/unit_tests/test_loader.py
T

325 lines
11 KiB
Python

"""Unit tests for esphome.loader module."""
from unittest.mock import MagicMock, patch
from esphome.loader import ComponentManifest, _replace_component_manifest, get_component
from tests.testing_helpers import ComponentManifestOverride
# ---------------------------------------------------------------------------
# ComponentManifestOverride
# ---------------------------------------------------------------------------
def _make_manifest(*, to_code=None, dependencies=None) -> ComponentManifest:
"""Return a ComponentManifest backed by a minimal mock module."""
mod = MagicMock()
mod.to_code = to_code
mod.DEPENDENCIES = dependencies or []
return ComponentManifest(mod)
def test_testing_manifest_delegates_to_wrapped() -> None:
"""Unoverridden attributes fall through to the wrapped manifest."""
inner = _make_manifest(dependencies=["wifi"])
tm = ComponentManifestOverride(inner)
assert tm.dependencies == ["wifi"]
def test_testing_manifest_override_shadows_wrapped() -> None:
"""An assigned attribute shadows the wrapped value."""
inner = _make_manifest(dependencies=["wifi"])
tm = ComponentManifestOverride(inner)
tm.dependencies = ["ble"]
assert tm.dependencies == ["ble"]
# Wrapped value unchanged
assert inner.dependencies == ["wifi"]
def test_testing_manifest_to_code_suppression() -> None:
"""Setting to_code=None suppresses code generation."""
async def real_to_code(config):
pass
inner = _make_manifest(to_code=real_to_code)
tm = ComponentManifestOverride(inner)
tm.to_code = None
assert tm.to_code is None
def test_testing_manifest_enable_codegen_removes_suppression() -> None:
"""enable_codegen() removes the to_code override, restoring the original."""
async def real_to_code(config):
pass
inner = _make_manifest(to_code=real_to_code)
tm = ComponentManifestOverride(inner)
tm.to_code = None
assert tm.to_code is None
tm.enable_codegen()
assert tm.to_code is real_to_code
def test_testing_manifest_enable_codegen_preserves_other_overrides() -> None:
"""enable_codegen() only removes to_code; other overrides survive."""
inner = _make_manifest(dependencies=["wifi"])
tm = ComponentManifestOverride(inner)
tm.to_code = None
tm.dependencies = ["ble"]
tm.enable_codegen()
assert tm.to_code is inner.to_code
assert tm.dependencies == ["ble"]
def test_testing_manifest_restore_clears_all_overrides() -> None:
"""restore() removes every override, reverting all attributes to wrapped values."""
async def real_to_code(config):
pass
inner = _make_manifest(to_code=real_to_code, dependencies=["wifi"])
tm = ComponentManifestOverride(inner)
tm.to_code = None
tm.dependencies = ["ble"]
tm.restore()
assert tm.to_code is real_to_code
assert tm.dependencies == ["wifi"]
def test_replace_component_manifest_installs_override() -> None:
"""_replace_component_manifest replaces the cached manifest for a domain."""
inner = _make_manifest()
override = ComponentManifestOverride(inner)
_replace_component_manifest("_test_dummy_domain", override)
assert get_component("_test_dummy_domain") is override
def test_component_manifest_resources_with_filter_source_files() -> None:
"""Test that ComponentManifest.resources correctly filters out excluded files."""
# Create a mock module with FILTER_SOURCE_FILES function
mock_module = MagicMock()
mock_module.FILTER_SOURCE_FILES = lambda: [
"platform_esp32.cpp",
"platform_esp8266.cpp",
]
mock_module.__package__ = "esphome.components.test_component"
# Create ComponentManifest instance
manifest = ComponentManifest(mock_module)
# Mock the files in the package
def create_mock_file(filename: str) -> MagicMock:
mock_file = MagicMock()
mock_file.name = filename
mock_file.is_file.return_value = True
return mock_file
mock_files = [
create_mock_file("test.cpp"),
create_mock_file("test.h"),
create_mock_file("platform_esp32.cpp"),
create_mock_file("platform_esp8266.cpp"),
create_mock_file("common.cpp"),
create_mock_file("README.md"), # Should be excluded by extension
]
# Mock importlib.resources
with patch("importlib.resources.files") as mock_files_func:
mock_package_files = MagicMock()
mock_package_files.iterdir.return_value = mock_files
mock_package_files.joinpath = lambda name: MagicMock(is_file=lambda: True)
mock_files_func.return_value = mock_package_files
# Get resources
resources = manifest.resources
# Convert to list of filenames for easier testing
resource_names = [r.resource for r in resources]
# Check that platform files are excluded
assert "platform_esp32.cpp" not in resource_names
assert "platform_esp8266.cpp" not in resource_names
# Check that other source files are included
assert "test.cpp" in resource_names
assert "test.h" in resource_names
assert "common.cpp" in resource_names
# Check that non-source files are excluded
assert "README.md" not in resource_names
# Verify the correct number of resources
assert len(resources) == 3 # test.cpp, test.h, common.cpp
# ---------------------------------------------------------------------------
# recursive_sources — used only by the core "esphome" manifest so that files
# in esphome/core/<subdir>/*.cpp (e.g. esphome/core/wake/wake_host.cpp) are
# discovered without promoting <subdir>/ to a Python subpackage.
# ---------------------------------------------------------------------------
def _mock_file(filename: str) -> MagicMock:
m = MagicMock()
m.name = filename
m.is_file.return_value = True
m.is_dir.return_value = False
return m
def _mock_dir(dirname: str, children: list, has_init: bool = False) -> MagicMock:
"""Mock a directory entry with an iterdir() and joinpath('__init__.py')."""
d = MagicMock()
d.name = dirname
d.is_file.return_value = False
d.is_dir.return_value = True
d.iterdir.return_value = children
init_marker = MagicMock()
init_marker.is_file.return_value = has_init
d.joinpath.return_value = init_marker
return d
def test_component_manifest_resources_non_recursive_skips_subdirs() -> None:
"""Default (recursive_sources=False) does not descend into subdirectories."""
mock_module = MagicMock()
mock_module.__package__ = "esphome.components.test_component"
# No FILTER_SOURCE_FILES.
del mock_module.FILTER_SOURCE_FILES
manifest = ComponentManifest(mock_module) # recursive_sources defaults to False
top_level = [
_mock_file("top.cpp"),
_mock_dir("subdir", [_mock_file("nested.cpp")]),
]
with patch("importlib.resources.files") as mock_files_func:
pkg = MagicMock()
pkg.iterdir.return_value = top_level
mock_files_func.return_value = pkg
names = [r.resource for r in manifest.resources]
assert names == ["top.cpp"]
def test_component_manifest_resources_recursive_walks_non_subpackage_subdirs() -> None:
"""With recursive_sources=True, a subdir without __init__.py is walked."""
mock_module = MagicMock()
mock_module.__package__ = "esphome.core"
del mock_module.FILTER_SOURCE_FILES
manifest = ComponentManifest(mock_module, recursive_sources=True)
wake_dir = _mock_dir(
"wake",
[
_mock_file("wake_host.cpp"),
_mock_file("wake_host.h"),
_mock_file("README.md"), # wrong suffix, excluded
],
has_init=False,
)
top_level = [
_mock_file("wake.h"),
wake_dir,
]
with patch("importlib.resources.files") as mock_files_func:
pkg = MagicMock()
pkg.iterdir.return_value = top_level
mock_files_func.return_value = pkg
names = sorted(r.resource for r in manifest.resources)
assert names == ["wake.h", "wake/wake_host.cpp", "wake/wake_host.h"]
def test_component_manifest_resources_recursive_skips_subpackages() -> None:
"""Subdirectories that ARE Python subpackages (contain __init__.py) are
skipped even with recursive_sources=True — those load as their own
ComponentManifest and would otherwise be double-counted."""
mock_module = MagicMock()
mock_module.__package__ = "esphome.components.haier"
del mock_module.FILTER_SOURCE_FILES
manifest = ComponentManifest(mock_module, recursive_sources=True)
button_pkg = _mock_dir(
"button",
[_mock_file("self_cleaning.cpp")],
has_init=True, # Python subpackage — must be skipped.
)
top_level = [
_mock_file("haier.cpp"),
button_pkg,
]
with patch("importlib.resources.files") as mock_files_func:
pkg = MagicMock()
pkg.iterdir.return_value = top_level
mock_files_func.return_value = pkg
names = [r.resource for r in manifest.resources]
assert names == ["haier.cpp"]
def test_component_manifest_resources_recursive_skips_pycache() -> None:
"""__pycache__ inside a recursive walk must never be descended into."""
mock_module = MagicMock()
mock_module.__package__ = "esphome.core"
del mock_module.FILTER_SOURCE_FILES
manifest = ComponentManifest(mock_module, recursive_sources=True)
# __pycache__ is_dir=True but must be skipped without checking __init__.py
# or calling iterdir (would yield compiled artifacts).
pycache = _mock_dir("__pycache__", [_mock_file("wake.cpython-314.pyc")])
top_level = [
_mock_file("wake.h"),
pycache,
]
with patch("importlib.resources.files") as mock_files_func:
pkg = MagicMock()
pkg.iterdir.return_value = top_level
mock_files_func.return_value = pkg
names = [r.resource for r in manifest.resources]
assert names == ["wake.h"]
def test_component_manifest_resources_recursive_filter_source_files_supports_subpaths() -> (
None
):
"""FILTER_SOURCE_FILES entries using '/'-joined subpaths exclude files
inside a recursively-walked subdir."""
mock_module = MagicMock()
mock_module.__package__ = "esphome.core"
mock_module.FILTER_SOURCE_FILES = lambda: ["wake/wake_host.cpp"]
manifest = ComponentManifest(mock_module, recursive_sources=True)
wake_dir = _mock_dir(
"wake",
[
_mock_file("wake_host.cpp"), # excluded
_mock_file("wake_freertos.cpp"), # kept
],
)
with patch("importlib.resources.files") as mock_files_func:
pkg = MagicMock()
pkg.iterdir.return_value = [wake_dir]
mock_files_func.return_value = pkg
names = [r.resource for r in manifest.resources]
assert names == ["wake/wake_freertos.cpp"]