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chore: import upstream snapshot with attribution
2026-07-13 13:38:09 +08:00

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Python

"""Tests for CLI verbosity options.
This module tests the configurable verbosity functionality that allows
suppressing C++ output from FAISS/HNSW.
See: https://github.com/yichuan-w/LEANN/issues/187
"""
import os
import pytest
class TestSuppressCppOutput:
"""Test the suppress_cpp_output context manager."""
def test_suppress_cpp_output_captures_stdout(self):
"""C output to stdout should be suppressed when enabled."""
from leann.cli import suppress_cpp_output
with suppress_cpp_output(suppress=True):
# This goes to fd 1, but is redirected to devnull
os.write(1, b"This should be suppressed\n")
# If we got here without error, suppression worked
# The text was written to devnull
def test_suppress_cpp_output_captures_stderr(self):
"""C output to stderr should be suppressed when enabled."""
from leann.cli import suppress_cpp_output
with suppress_cpp_output(suppress=True):
# This goes to fd 2, but is redirected to devnull
os.write(2, b"This error should be suppressed\n")
def test_suppress_cpp_output_restores_fds(self):
"""File descriptors should be restored after context."""
from leann.cli import suppress_cpp_output
# Save original fds
original_stdout = os.dup(1)
original_stderr = os.dup(2)
try:
with suppress_cpp_output(suppress=True):
pass
# Verify fds are still valid and point to original destinations
# by checking we can write to them
os.write(1, b"") # Should not raise
os.write(2, b"") # Should not raise
finally:
os.close(original_stdout)
os.close(original_stderr)
def test_suppress_cpp_output_disabled(self):
"""When suppress=False, output should not be suppressed."""
from leann.cli import suppress_cpp_output
with suppress_cpp_output(suppress=False):
# This should work normally
os.write(1, b"")
os.write(2, b"")
class TestCliVerbosityArgs:
"""Test CLI argument parsing for verbosity options."""
def test_verbose_flag_parsed(self):
"""--verbose flag should be parsed correctly."""
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
args = parser.parse_args(["--verbose", "list"])
assert args.verbose is True
assert args.quiet is False
def test_quiet_flag_parsed(self):
"""-q flag should be parsed correctly."""
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
args = parser.parse_args(["-q", "list"])
assert args.quiet is True
assert args.verbose is False
def test_verbose_short_flag(self):
"""-v should work as shorthand for --verbose."""
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
args = parser.parse_args(["-v", "list"])
assert args.verbose is True
def test_verbose_and_quiet_mutually_exclusive(self):
"""--verbose and --quiet should be mutually exclusive."""
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
with pytest.raises(SystemExit):
parser.parse_args(["--verbose", "--quiet", "list"])
def test_default_is_quiet(self):
"""Default behavior should be quiet (suppress C++ output)."""
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
args = parser.parse_args(["list"])
assert args.verbose is False
assert args.quiet is False
# When both are False, we suppress by default
class TestVerbosityIntegration:
"""Integration tests for verbosity in commands."""
def test_list_command_does_not_suppress(self):
"""List command should work without suppression."""
import asyncio
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
# List command should not raise
args = parser.parse_args(["list"])
asyncio.run(cli.run(args))
def test_verbose_flag_with_list(self):
"""Verbose flag should work with list command."""
import asyncio
from leann.cli import LeannCLI
cli = LeannCLI()
parser = cli.create_parser()
args = parser.parse_args(["-v", "list"])
asyncio.run(cli.run(args))