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"""Unit tests for the subscleaner module."""
from io import StringIO
from unittest.mock import patch
import pysrt
import pytest
from src.subscleaner.subscleaner import (
contains_ad,
get_encoding,
is_processed_before,
main,
process_subtitle_file,
process_subtitle_files,
remove_ad_lines,
)
@pytest.fixture
def sample_srt_content():
"""Return a sample SRT content."""
return """1
00:00:01,000 --> 00:00:03,000
This is a sample subtitle.
2
00:00:04,000 --> 00:00:06,000
OpenSubtitles
3
00:00:07,000 --> 00:00:09,000
Another sample subtitle.
"""
def create_sample_srt_file(tmpdir, content):
"""Create a sample SRT file with the given content."""
file_path = tmpdir.join("sample.srt")
file_path.write(content)
return str(file_path)
@pytest.mark.parametrize(
"subtitle_line, expected_result",
[
("This is a normal line", False),
("This line contains OpenSubtitles", True),
("Subtitles by XYZ", True),
],
)
def test_contains_ad(subtitle_line, expected_result):
"""
Test the contains_ad function with different subtitle lines and expected results.
Args:
subtitle_line (str): The subtitle line to be tested.
expected_result (bool): The expected result (True if the line contains an ad, False otherwise).
"""
assert contains_ad(subtitle_line) is expected_result
def test_is_processed_before(tmpdir):
"""
Test the is_processed_before function.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT file.
"""
subtitle_file = create_sample_srt_file(tmpdir, "")
with patch("src.subscleaner.subscleaner.os.path.getctime", return_value=0):
assert is_processed_before(subtitle_file) is True
with patch("src.subscleaner.subscleaner.os.path.getctime", return_value=9999999999):
assert is_processed_before(subtitle_file) is False
def test_get_encoding(tmpdir, sample_srt_content):
"""
Test the get_encoding function.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT file.
sample_srt_content (str): The sample SRT content.
"""
subtitle_file = create_sample_srt_file(tmpdir, sample_srt_content)
assert get_encoding(subtitle_file) == "ascii"
def test_remove_ad_lines(sample_srt_content):
"""
Test the remove_ad_lines function.
Args:
sample_srt_content (str): The sample SRT content.
"""
subtitle_data = pysrt.from_string(sample_srt_content)
expected_subtitle_count = 2
assert remove_ad_lines(subtitle_data) is True
assert len(subtitle_data) == expected_subtitle_count
subtitle_data = pysrt.from_string("1\n00:00:01,000 --> 00:00:03,000\nThis is a sample subtitle.")
assert remove_ad_lines(subtitle_data) is False
assert len(subtitle_data) == 1
def test_process_subtitle_file_no_modification(tmpdir, sample_srt_content):
"""
Test the process_subtitle_file function when the file does not require modification.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT file.
sample_srt_content (str): The sample SRT content.
"""
subtitle_file = create_sample_srt_file(tmpdir, sample_srt_content)
with patch("src.subscleaner.subscleaner.is_processed_before", return_value=True):
assert process_subtitle_file(subtitle_file) is False
def test_process_subtitle_file_with_modification(tmpdir, sample_srt_content):
"""
Test the process_subtitle_file function when the file requires modification.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT file.
sample_srt_content (str): The sample SRT content.
"""
subtitle_file = create_sample_srt_file(tmpdir, sample_srt_content)
with patch("src.subscleaner.subscleaner.is_processed_before", return_value=False):
assert process_subtitle_file(subtitle_file) is True
def test_process_subtitle_file_error(tmpdir):
"""
Test the process_subtitle_file function when an error occurs (e.g., file not found).
Args:
tmpdir (pytest.fixture): A temporary directory.
"""
subtitle_file = tmpdir.join("nonexistent.srt")
assert process_subtitle_file(str(subtitle_file)) is False
def test_process_subtitle_files(tmpdir, sample_srt_content):
"""
Test the process_subtitle_files function.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT files.
sample_srt_content (str): The sample SRT content.
"""
subtitle_file1 = create_sample_srt_file(tmpdir, sample_srt_content)
subtitle_file2 = create_sample_srt_file(tmpdir, "1\n00:00:01,000 --> 00:00:03,000\nThis is a sample subtitle.")
with patch("src.subscleaner.subscleaner.process_subtitle_file", side_effect=[True, False]):
modified_subtitle_files = process_subtitle_files([subtitle_file1, subtitle_file2])
assert modified_subtitle_files == [subtitle_file1]
def test_main_no_modification(tmpdir, sample_srt_content):
"""
Test the main function when no files require modification.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT file.
sample_srt_content (str): The sample SRT content.
"""
subtitle_file = create_sample_srt_file(tmpdir, sample_srt_content)
with (
patch("sys.stdin", StringIO(subtitle_file)),
patch("src.subscleaner.subscleaner.process_subtitle_files", return_value=[]) as mock_process_subtitle_files,
):
main()
mock_process_subtitle_files.assert_called_once_with([subtitle_file])
def test_main_with_modification(tmpdir, sample_srt_content):
"""
Test the main function when files require modification.
Args:
tmpdir (pytest.fixture): A temporary directory for creating the sample SRT file.
sample_srt_content (str): The sample SRT content.
"""
subtitle_file = create_sample_srt_file(tmpdir, sample_srt_content)
with (
patch("sys.stdin", StringIO(subtitle_file)),
patch(
"src.subscleaner.subscleaner.process_subtitle_files",
return_value=[subtitle_file],
) as mock_process_subtitle_files,
):
main()
mock_process_subtitle_files.assert_called_once_with([subtitle_file])
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