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esphome/tests/unit_tests/components/test_esp8266.py
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Python

"""Tests for ESP8266 component."""
from __future__ import annotations
from collections.abc import Generator
from unittest.mock import MagicMock, patch
import pytest
from esphome.components import esp8266
from esphome.components.esp8266 import check_rosetta, lambdas_use_scanf_float
from esphome.core import EsphomeError, Lambda
from esphome.types import ConfigType
@pytest.mark.parametrize(
("src", "expected"),
[
# Basic float formats
('sscanf(buf, "%f", &v)', True),
('sscanf(buf, "%F", &v)', True),
('sscanf(buf, "%e", &v)', True),
('sscanf(buf, "%E", &v)', True),
('sscanf(buf, "%g", &v)', True),
('sscanf(buf, "%G", &v)', True),
('sscanf(buf, "%a", &v)', True),
('sscanf(buf, "%A", &v)', True),
# With modifiers
('sscanf(buf, "%lf", &v)', True),
('sscanf(buf, "%Lf", &v)', True),
('sscanf(buf, "%8lf", &v)', True),
('sscanf(buf, "%*f")', True),
('sscanf(buf, "%.2f", &v)', True),
# Mixed formats
('sscanf(buf, "%d,%f", &a, &b)', True),
# fscanf and std::sscanf
('fscanf(fp, "%f", &v)', True),
('std::sscanf(buf, "%f", &v)', True),
# Multi-line
('sscanf(buf,\n"%f", &v)', True),
# No float format
('sscanf(buf, "%d", &v)', False),
('sscanf(buf, "%s", s)', False),
# printf not scanf
('printf("%f", val)', False),
# %f in a different statement after scanf
('sscanf(buf, "%d", &x); printf("%f", val);', False),
# scanf %f in comment only
('// sscanf(buf, "%f", &v)\nsscanf(buf, "%d", &x)', False),
('/* sscanf(buf, "%f") */\nsscanf(buf, "%d", &x)', False),
],
)
def test_lambdas_use_scanf_float(src: str, expected: bool) -> None:
"""Test scanf float detection in lambda source."""
config: ConfigType = {"test": [Lambda(src)]}
assert lambdas_use_scanf_float(config) is expected
def test_lambdas_use_scanf_float_no_lambdas() -> None:
"""Test with config containing no lambdas."""
config: ConfigType = {"key": "value", "list": [1, 2]}
assert lambdas_use_scanf_float(config) is False
def test_lambdas_use_scanf_float_nested() -> None:
"""Test detection in deeply nested config."""
config: ConfigType = {"a": {"b": {"c": [Lambda('sscanf(buf, "%f", &v)')]}}}
assert lambdas_use_scanf_float(config) is True
@pytest.fixture
def apple_silicon_run(monkeypatch: pytest.MonkeyPatch) -> Generator[MagicMock]:
"""Simulate an Apple Silicon Mac and yield the mocked subprocess.run."""
monkeypatch.setattr(esp8266, "IS_MACOS", True)
with (
patch("esphome.components.esp8266.platform.machine", return_value="arm64"),
patch("esphome.components.esp8266.subprocess.run") as mock_run,
):
yield mock_run
@pytest.mark.parametrize(
("is_macos", "machine"),
[
(False, "arm64"),
(True, "x86_64"),
],
)
def test_check_rosetta_skips_other_systems(
monkeypatch: pytest.MonkeyPatch, is_macos: bool, machine: str
) -> None:
"""The check only probes on Apple Silicon Macs."""
monkeypatch.setattr(esp8266, "IS_MACOS", is_macos)
with (
patch("esphome.components.esp8266.platform.machine", return_value=machine),
patch("esphome.components.esp8266.subprocess.run") as mock_run,
):
check_rosetta()
mock_run.assert_not_called()
def test_check_rosetta_installed(apple_silicon_run: MagicMock) -> None:
"""No error when the x86_64 probe succeeds (Rosetta present)."""
apple_silicon_run.return_value = MagicMock(returncode=0)
check_rosetta()
apple_silicon_run.assert_called_once()
def test_check_rosetta_missing(apple_silicon_run: MagicMock) -> None:
"""A failing x86_64 probe raises an actionable error."""
apple_silicon_run.return_value = MagicMock(returncode=1)
with pytest.raises(EsphomeError, match="softwareupdate --install-rosetta"):
check_rosetta()
def test_check_rosetta_arch_unavailable(apple_silicon_run: MagicMock) -> None:
"""The build proceeds when arch(1) cannot be executed."""
apple_silicon_run.side_effect = OSError("no such file")
check_rosetta()