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#!/usr/bin/env pytest
import asyncio
import os
import subprocess
import sys
import pytest
sys.path.insert(0, os.path.join(os.path.dirname(__file__), "../"))
from ffmpeg_progress_yield import FfmpegProgress # noqa: E402
_TEST_ASSET = os.path.join(os.path.dirname(__file__), "test.mp4")
def count_ffmpeg_processes():
"""Count the number of running ffmpeg processes."""
try:
result = subprocess.run(
["pgrep", "-c", "ffmpeg"], capture_output=True, text=True
)
return int(result.stdout.strip()) if result.returncode == 0 else 0
except (subprocess.CalledProcessError, ValueError):
return 0
class TestLibrary:
cmd = [
"ffmpeg",
"-i",
_TEST_ASSET,
"-c:v",
"libx264",
"-vf",
"scale=1920x1080",
"-preset",
"fast",
"-f",
"null",
"/dev/null",
]
unknown_dur_cmd = [
"ffmpeg",
"-re",
"-f",
"lavfi",
"-i",
"testsrc=d=10",
"-t",
"5",
"-f",
"null",
"/dev/null",
]
def test_library(self):
ff = FfmpegProgress(TestLibrary.cmd)
elapsed = 0
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
assert progress >= elapsed
elapsed = progress
# assert that we get 100% progress
assert elapsed == 100
def test_unknown_dur(self):
ff = FfmpegProgress(TestLibrary.unknown_dur_cmd)
progresses = set([0.0])
for progress in ff.run_command_with_progress():
progresses.add(progress)
# assert that we get only 0 and 100% progress since we have no implicit duration
assert list(progresses) == [0, 100]
def test_manual_dur(self):
ff = FfmpegProgress(TestLibrary.unknown_dur_cmd)
progresses = set([0.0])
for progress in ff.run_command_with_progress(duration_override=5):
progresses.add(progress)
# assert that we get more than just 0 and 100
assert len(progresses) > 2
def test_getting_stderr(self):
ff = FfmpegProgress(TestLibrary.cmd)
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0 and ff.stderr is not None:
assert len(ff.stderr) > 0
break
def test_quit(self):
ff = FfmpegProgress(TestLibrary.cmd)
proc = None
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
proc = ff.process
ff.quit()
break
# expect that no ffmpeg process is running after this test after sleeping for 1 second
assert proc is not None
proc.wait()
assert proc.returncode == -9
def test_quit_gracefully(self):
ff = FfmpegProgress(TestLibrary.cmd)
proc = None
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0 and ff.process is not None:
proc = ff.process
ff.quit_gracefully()
break
# expect that no ffmpeg process is running after this test after sleeping for 1 second
assert proc is not None
assert proc.returncode == 0
def test_stderr_callback(self):
def stderr_callback(line):
print(line)
ff = FfmpegProgress(TestLibrary.cmd)
ff.set_stderr_callback(stderr_callback)
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
break
def test_progress_with_loglevel_error(self):
cmd = TestLibrary.cmd + ["-loglevel", "error"]
ff = FfmpegProgress(cmd)
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
assert 0 < progress < 100
break
def test_stderr_without_progress(self):
ff = FfmpegProgress(TestLibrary.cmd, exclude_progress=True)
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0 and ff.stderr is not None:
assert len(ff.stderr) > 0
break
assert "out_time=" not in ff.stderr
def test_stderr_with_progress(self):
ff = FfmpegProgress(TestLibrary.cmd, exclude_progress=False)
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0 and ff.stderr is not None:
assert len(ff.stderr) > 0
break
assert "out_time=" in ff.stderr
def test_context_manager(self):
"""Test that context manager works and cleans up processes."""
initial_count = count_ffmpeg_processes()
with FfmpegProgress(TestLibrary.cmd) as ff:
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 50: # Exit early to test cleanup
break
final_count = count_ffmpeg_processes()
assert final_count <= initial_count
def test_context_manager_with_exception(self):
"""Test that context manager cleans up even when exceptions occur."""
initial_count = count_ffmpeg_processes()
try:
with FfmpegProgress(TestLibrary.cmd) as ff:
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
raise ValueError("Test exception")
except ValueError:
pass # Expected exception
final_count = count_ffmpeg_processes()
assert final_count <= initial_count
def test_automatic_cleanup_on_exception(self):
"""Test that processes are cleaned up automatically when exceptions occur."""
initial_count = count_ffmpeg_processes()
try:
ff = FfmpegProgress(TestLibrary.cmd)
for progress in ff.run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
raise ValueError("Test exception")
except ValueError:
pass # Expected exception
final_count = count_ffmpeg_processes()
assert final_count <= initial_count
class TestProgress:
def test_progress(self):
cmd = [
"python3",
"-m",
"ffmpeg_progress_yield",
"ffmpeg",
"-i",
_TEST_ASSET,
"-c:v",
"libx264",
"-preset",
"fast",
"-f",
"null",
"/dev/null",
]
# Force fallback format for reliable testing
env = os.environ.copy()
env["FFMPEG_PROGRESS_NO_TQDM"] = "1"
ret = subprocess.run(cmd, capture_output=True, universal_newlines=True, env=env)
# Check for fallback format (X/100) in stdout
assert "0/100" in ret.stdout
assert "100.0/100" in ret.stdout or "100/100" in ret.stdout
class TestAsyncLibrary:
cmd = TestLibrary.cmd
@pytest.mark.asyncio
async def test_async_library(self):
ff = FfmpegProgress(TestAsyncLibrary.cmd)
elapsed = 0
async for progress in ff.async_run_command_with_progress():
print(f"{progress}/100")
assert progress >= elapsed
elapsed = progress
# assert that we get 100% progress
assert elapsed == 100
@pytest.mark.asyncio
async def test_async_quit(self):
ff = FfmpegProgress(TestAsyncLibrary.cmd)
proc = None
async for progress in ff.async_run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
proc = ff.process
await ff.async_quit()
break
assert proc is not None
await proc.wait()
assert proc.returncode != 0
@pytest.mark.asyncio
async def test_async_quit_gracefully(self):
ff = FfmpegProgress(TestAsyncLibrary.cmd)
proc = None
async for progress in ff.async_run_command_with_progress():
print(f"{progress}/100")
if progress > 0 and ff.process is not None:
proc = ff.process
await ff.async_quit_gracefully()
break
assert proc is not None
assert proc.returncode == 0
@pytest.mark.asyncio
async def test_async_context_manager(self):
"""Test that async context manager works and cleans up processes."""
initial_count = count_ffmpeg_processes()
async with FfmpegProgress(TestAsyncLibrary.cmd) as ff:
async for progress in ff.async_run_command_with_progress():
print(f"{progress}/100")
if progress > 50: # Exit early to test cleanup
break
# Give cleanup a moment
await asyncio.sleep(0.5)
final_count = count_ffmpeg_processes()
assert final_count <= initial_count
@pytest.mark.asyncio
async def test_async_context_manager_with_exception(self):
"""Test that async context manager cleans up even when exceptions occur."""
initial_count = count_ffmpeg_processes()
try:
async with FfmpegProgress(TestAsyncLibrary.cmd) as ff:
async for progress in ff.async_run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
raise ValueError("Test exception")
except ValueError:
pass # Expected exception
# Give cleanup a moment
await asyncio.sleep(0.5)
final_count = count_ffmpeg_processes()
assert final_count <= initial_count
@pytest.mark.asyncio
async def test_async_automatic_cleanup_on_exception(self):
"""Test that async processes are cleaned up automatically when exceptions occur."""
initial_count = count_ffmpeg_processes()
try:
ff = FfmpegProgress(TestAsyncLibrary.cmd)
async for progress in ff.async_run_command_with_progress():
print(f"{progress}/100")
if progress > 0:
raise ValueError("Test exception")
except ValueError:
pass # Expected exception
# Give cleanup a moment
await asyncio.sleep(0.5)
final_count = count_ffmpeg_processes()
assert final_count <= initial_count
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