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import subprocess
from unittest import mock
import pytest
@pytest.mark.parametrize("is_color_enabled", [True, False])
def test_logcat(mock_tools, adb, is_color_enabled, monkeypatch):
"""Invoking `logcat()` calls `Popen()` with the appropriate parameters."""
# Mock whether color is enabled for the console
monkeypatch.setattr(
type(mock_tools.console),
"is_color_enabled",
mock.PropertyMock(return_value=is_color_enabled),
)
# Mock the result of calling Popen so we can compare against this return value
popen = mock.MagicMock()
mock_tools.subprocess.Popen.return_value = popen
# Invoke logcat
result = adb.logcat("1234")
# Validate call parameters.
mock_tools.subprocess.Popen.assert_called_once_with(
[
mock_tools.android_sdk.adb_path,
"-s",
"exampleDevice",
"logcat",
"--format=tag",
"--pid",
"1234",
"EGL_emulation:S",
]
+ (["--format=color"] if is_color_enabled else []),
env=mock_tools.android_sdk.env,
encoding="UTF-8",
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=1,
)
# The Popen object is returned
assert result == popen
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