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#!/usr/bin/python3
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
"""Run: /usr/bin/python3 desktop/assistant/test_fileops.py
Builds throwaway inputs in a temp folder and runs every operation but
trackcrop (it opens a window) into a temp output folder.
"""
import json
import os
import signal
import subprocess
import sys
import tarfile
import tempfile
import time
HERE = os.path.dirname(os.path.abspath(__file__))
FILEOPS = os.path.join(HERE, "fileops")
def fileops(op, outdir, *files):
p = subprocess.run([sys.executable, FILEOPS, op, outdir, *files],
capture_output=True, text=True, timeout=120)
return json.loads(p.stdout.strip().splitlines()[-1]), p.returncode
def mime(path):
return subprocess.run(["file", "-b", "--mime-type", path], capture_output=True,
text=True).stdout.strip()
def sh(*argv):
subprocess.run(argv, check=True, capture_output=True)
with tempfile.TemporaryDirectory() as src, tempfile.TemporaryDirectory() as out:
pdf_a, pdf_b = os.path.join(src, "a.pdf"), os.path.join(src, "b.pdf")
png = os.path.join(src, "pic.png")
# This ffmpeg has no libx264 and no AAC encoder: inputs are VP9 + Opus
# in WebM and MPEG-4 + PCM in Matroska.
clip = os.path.join(src, "clip.webm")
raw = os.path.join(src, "raw.mkv")
tarball = os.path.join(src, "bundle.tar")
sh("magick", "-size", "200x100", "xc:white", pdf_a)
sh("magick", "-size", "200x100", "xc:gray", pdf_b)
sh("magick", "-size", "64x32", "xc:red", png)
sh("ffmpeg", "-v", "error", "-f", "lavfi", "-i", "testsrc=duration=1:size=160x120:rate=10",
"-f", "lavfi", "-i", "sine=duration=1", "-c:v", "libvpx-vp9", "-c:a", "libopus", "-shortest", clip)
sh("ffmpeg", "-v", "error", "-f", "lavfi", "-i", "testsrc=duration=1:size=160x120:rate=10",
"-f", "lavfi", "-i", "sine=duration=1", "-c:v", "mpeg4", "-c:a", "pcm_s16le", "-shortest", raw)
with open(os.path.join(src, "note.txt"), "w") as f:
f.write("hello\n")
with tarfile.open(tarball, "w") as t:
t.add(os.path.join(src, "note.txt"), arcname="note.txt")
def one(op, *files):
r, rc = fileops(op, out, *files)
assert r["ok"] and rc == 0, (op, r)
return r["out"]
# Each result, by the type file(1) sees in it.
[m] = one("pdf-merge", pdf_a, pdf_b)
assert mime(m) == "application/pdf" and os.path.basename(m) == "merged.pdf"
assert subprocess.run(["qpdf", "--show-npages", m], capture_output=True,
text=True).stdout.strip() == "2"
[d] = one("pdf-images", pdf_a)
assert os.path.basename(d) == "a (pages)" and [mime(os.path.join(d, x)) for x in os.listdir(d)] == ["image/png"]
[a] = one("audio", clip) # Opus: copied as it is
assert a.endswith("clip.opus") and mime(a) == "audio/ogg", mime(a)
[a2] = one("audio", raw) # PCM: encoded to MP3
assert a2.endswith("raw.mp3") and mime(a2) == "audio/mpeg", mime(a2)
[w] = one("webm", raw)
assert mime(w) == "video/webm" and w.endswith("raw.webm")
[v] = one("mp4", raw) # h264_vaapi + MP3
assert mime(v) == "video/mp4" and v.endswith("raw.mp4")
[g] = one("gif", clip)
assert mime(g) == "image/gif"
[j] = one("jpeg", png)
assert mime(j) == "image/jpeg"
[p] = one("png", j)
assert mime(p) == "image/png" and os.path.basename(p) == "pic.png"
[wp] = one("webp", png)
assert mime(wp) == "image/webp"
[h] = one("half", png)
assert os.path.basename(h) == "pic (50%).png"
assert subprocess.run(["magick", "identify", "-format", "%wx%h", h], capture_output=True,
text=True).stdout == "32x16"
[x] = one("extract", tarball)
assert os.path.basename(x) == "bundle" and os.listdir(x) == ["note.txt"]
for op, want, ext in (("zip", "application/zip", ".zip"), ("tgz", "application/gzip", ".tar.gz"),
("txz", "application/x-xz", ".tar.xz"), ("tbz2", "application/x-bzip2", ".tar.bz2")):
[z] = one(op, png, pdf_a)
assert mime(z) == want and os.path.basename(z) == "archive" + ext, (op, z)
[z1] = one("zip", png) # one file: named after it
assert os.path.basename(z1) == "pic.zip"
# One result per file, and taken names get a number.
rs = one("png", png, png)
assert [os.path.basename(r) for r in rs] == ["pic (1).png", "pic (2).png"], rs
# A failure leaves nothing behind.
before = set(os.listdir(out))
fake = os.path.join(src, "fake.mp4")
with open(fake, "w") as f:
f.write("not a video\n")
r, rc = fileops("gif", out, fake)
assert not r["ok"] and rc == 1 and r["error"], r
assert set(os.listdir(out)) == before, set(os.listdir(out)) - before
for bad in (("nope", out, png), ("png", "relative/dir", png), ("png", out, src + "/missing.png")):
r, rc = fileops(*bad)
assert not r["ok"] and rc == 1, bad
r, _ = fileops("audio", out, g)
assert not r["ok"] and "audio" in r["error"], r # a GIF has no audio track
# From review: each of these failed or misbehaved once.
anim = os.path.join(src, "anim.gif")
sh("magick", "-size", "8x8", "xc:red", "xc:blue", "-loop", "0", anim)
[ap] = one("png", anim) # first frame, no stray frame files
assert mime(ap) == "image/png" and not [n for n in os.listdir(out) if n.startswith(".")]
clear = os.path.join(src, "clear.png")
sh("magick", "-size", "8x8", "xc:none", clear)
[cj] = one("jpeg", clear) # transparency flattened onto white
assert subprocess.run(["magick", cj, "-format", "%[fx:int(255*p{0,0}.r)]", "info:"],
capture_output=True, text=True).stdout == "255"
dotted = os.path.join(src, "v1.2 notes.pdf")
sh("magick", "-size", "50x50", "xc:white", dotted)
names = [os.path.basename(one("pdf-images", dotted)[0]) for _ in range(2)]
assert names == ["v1.2 notes (pages)", "v1.2 notes (pages) (1)"], names
gz = os.path.join(src, "note.txt.gz")
sh("sh", "-c", f"gzip -c {os.path.join(src, 'note.txt')} > '{gz}'")
[gx] = one("extract", gz) # a single compressed file
assert os.path.basename(gx) == "note.txt" and open(gx).read() == "hello\n"
pgz = os.path.join(src, "pic.png.gz")
sh("sh", "-c", f"gzip -c '{png}' > '{pgz}'")
[px] = one("extract", pgz) # binary content survives
assert open(px, "rb").read() == open(png, "rb").read()
with open(os.path.join(src, ".bashrc"), "w") as fh:
fh.write("x\n")
[dz] = one("zip", os.path.join(src, ".bashrc"))
assert os.path.basename(dz) == "bashrc.zip"
with tempfile.TemporaryDirectory() as tree: # the output folder inside the input
inner = os.path.join(tree, "Assistant")
with open(os.path.join(tree, "a.txt"), "w") as fh:
fh.write("a\n")
os.mkfifo(os.path.join(tree, "pipe"))
os.symlink("/nonexistent", os.path.join(tree, "dangling"))
r, rc = fileops("zip", inner, tree)
assert r["ok"], r
import zipfile
assert sorted(zipfile.ZipFile(r["out"][0]).namelist()) == [os.path.basename(tree) + "/a.txt"]
stale = os.path.join(out, ".fileops-999999-0.png")
open(stale, "w").close()
one("png", png) # a dead run's leftovers are swept
assert not os.path.exists(stale)
# SIGTERM mid-encode (the canvas's Stop): no ffmpeg left, no partial file.
long_clip = os.path.join(src, "long.mp4")
sh("ffmpeg", "-v", "error", "-f", "lavfi", "-i", "testsrc=duration=20:size=1280x720:rate=30",
"-c:v", "mpeg4", long_clip)
with tempfile.TemporaryDirectory() as slow:
proc = subprocess.Popen([sys.executable, FILEOPS, "webm", slow, long_clip],
stdout=subprocess.PIPE, text=True)
time.sleep(1.5)
proc.send_signal(signal.SIGTERM)
r = json.loads(proc.communicate(timeout=10)[0].strip().splitlines()[-1])
assert not r["ok"] and r["error"] == "stopped", r
time.sleep(0.5)
left = subprocess.run(["pgrep", "-f", slow], capture_output=True, text=True).stdout
assert left == "", left
assert os.listdir(slow) == [], os.listdir(slow)
print("ok")
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