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Krzysztof kuhy Rudnicki
d1ca1e3d5b
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Flutter repos now fail the repo contract when a launcher icon's ink is not on the shared 340px circle (png_ink), the launcher label breaks the naming rule (capital, ASCII letters, <= 10 chars, <= 522 wide in GoogleSansFlex), or an applicationIdSuffix variant still carries the LAUNCHER category. hook_sync rewrites a repo's stale repo-contract `files:` line to the widened template. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017k9j5dbjenpfZj7dh2faPN
131 lines
4.4 KiB
Python
131 lines
4.4 KiB
Python
"""The stdlib PNG reader and the family ink-circle rule (rule 4)."""
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from __future__ import annotations
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import struct
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import zlib
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from pathlib import Path
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import pytest
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from repo_contract import png_ink
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from .pngkit import CLEAR, FAINT, SIG, SIZE, chunk, disk_rows, encode, write_icon
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def geometry(tmp_path: Path, data: bytes) -> tuple[float, float, float]:
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path = tmp_path / "icon.png"
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path.write_bytes(data)
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return png_ink.ink_geometry(path)
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def test_family_disk_measures_340_centred(tmp_path: Path) -> None:
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radius, cx, cy = png_ink.ink_geometry(write_icon(tmp_path / "i.png"))
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assert (cx, cy) == (512, 512)
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assert 338 < radius <= 340
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def test_family_icon_passes(tmp_path: Path) -> None:
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assert png_ink.icon_problems(write_icon(tmp_path / "i.png"), "i.png") == []
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@pytest.mark.parametrize("radius", [380, 300])
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def test_too_big_or_too_small_fails(tmp_path: Path, radius: int) -> None:
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got = png_ink.icon_problems(write_icon(tmp_path / "i.png", radius), "i.png")
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assert len(got) == 1
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assert got[0].startswith("i.png: ink radius ")
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assert "340px" in got[0] and "app_icons" in got[0]
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def test_within_one_percent_passes(tmp_path: Path) -> None:
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assert png_ink.icon_problems(write_icon(tmp_path / "i.png", 349), "i.png") == []
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def test_off_centre_fails(tmp_path: Path) -> None:
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path = write_icon(tmp_path / "i.png", 340, cx=520)
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got = png_ink.icon_problems(path, "i.png")
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assert got == [
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"i.png: ink centre (520.0, 512.0) is 8.0px from (512, 512); at most 2px"
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]
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def test_two_px_off_centre_passes(tmp_path: Path) -> None:
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path = write_icon(tmp_path / "i.png", 340, cx=514)
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assert png_ink.icon_problems(path, "i.png") == []
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def test_every_filter_type_decodes_identically(tmp_path: Path) -> None:
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rows = disk_rows(100, 500, 520)
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plain = geometry(tmp_path, encode(rows))
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mixed = encode(rows, filters=lambda y: y % 5 if 400 <= y < 640 else 0)
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assert geometry(tmp_path, mixed) == plain
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def test_faint_fringe_is_not_ink(tmp_path: Path) -> None:
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rows = disk_rows(100)
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rows[0] = FAINT * SIZE
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assert geometry(tmp_path, encode(rows)) == geometry(
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tmp_path, encode(disk_rows(100))
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)
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def test_missing_iend_still_decodes(tmp_path: Path) -> None:
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assert geometry(tmp_path, encode(disk_rows(50), iend=False))[0] > 0
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def test_ancillary_chunks_skipped(tmp_path: Path) -> None:
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data = encode(disk_rows(50))
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with_text = data[:33] + chunk(b"tEXt", b"k\0v") + data[33:]
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assert geometry(tmp_path, with_text) == geometry(tmp_path, data)
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def _ihdr_only(ihdr: bytes) -> bytes:
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return SIG + chunk(b"IHDR", ihdr) + chunk(b"IEND", b"")
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def _header(size: int = SIZE, depth: int = 8, colour: int = 6, il: int = 0) -> bytes:
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return struct.pack(">IIBBBBB", size, size, depth, colour, 0, 0, il)
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@pytest.mark.parametrize(
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("data", "message"),
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[
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(b"GIF89a", "is not a PNG"),
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(SIG + chunk(b"IEND", b""), "has no IHDR chunk"),
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(_ihdr_only(_header(size=512)), "is 512x512; the family canvas is 1024x1024"),
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(_ihdr_only(_header(colour=2)), "must be 8-bit RGBA, non-interlaced"),
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(_ihdr_only(_header(depth=16)), "must be 8-bit RGBA, non-interlaced"),
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(_ihdr_only(_header(il=1)), "must be 8-bit RGBA, non-interlaced"),
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(
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SIG + chunk(b"IHDR", _header()) + chunk(b"IDAT", b"not zlib"),
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"has corrupt image data",
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),
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(
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SIG + chunk(b"IHDR", _header()) + chunk(b"IDAT", zlib.compress(b"\0" * 9)),
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"has truncated image data",
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),
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(encode([CLEAR * SIZE] * SIZE), "has no inked pixel (alpha > 127)"),
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],
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)
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def test_undecodable_fails_closed(tmp_path: Path, data: bytes, message: str) -> None:
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path = tmp_path / "icon.png"
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path.write_bytes(data)
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got = png_ink.icon_problems(path, "icon.png")
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assert len(got) == 1
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assert got[0].startswith(f"icon.png {message}")
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def test_bad_filter_type_fails_closed(tmp_path: Path) -> None:
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raw = (b"\x07" + CLEAR * SIZE) * SIZE
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data = SIG + chunk(b"IHDR", _header()) + chunk(b"IDAT", zlib.compress(raw))
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path = tmp_path / "icon.png"
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path.write_bytes(data)
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assert png_ink.icon_problems(path, "icon.png") == [
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"icon.png has an invalid PNG filter type 7"
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]
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def test_unreadable_file_fails_closed(tmp_path: Path) -> None:
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got = png_ink.icon_problems(tmp_path / "missing.png", "missing.png")
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assert len(got) == 1 and got[0].startswith("missing.png is unreadable:")
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