feat: 新增通知图片测试命令

tests/test_danding_qqpush_image_render.py

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+"""通知卡片渲染测试：版式、场景徽章、中文/Emoji 折行与降级路径。"""
+import base64
+import importlib.util
+import io
+from pathlib import Path
+
+from PIL import Image, ImageDraw
+
+
+def load_image_renderer():
+	"""按路径加载渲染模块，避免拉起需要 NoneBot 初始化的插件包。"""
+	path = Path(__file__).resolve().parents[1] / "danding_bot" / "plugins" / "danding_qqpush" / "image_render.py"
+	spec = importlib.util.spec_from_file_location("danding_qqpush_image_render", path)
+	module = importlib.util.module_from_spec(spec)
+	spec.loader.exec_module(module)
+	return module
+
+
+def build_renderer(module, **kwargs):
+	return module.ImageRenderer(**kwargs)
+
+
+def install_offline_pilmoji(monkeypatch, module):
+	"""用不访问远程 Emoji 源的替身，保证 Emoji 相关渲染测试离线可跑。"""
+
+	class OfflinePilmoji:
+		def __init__(self, image):
+			self._draw = ImageDraw.Draw(image)
+
+		def __enter__(self):
+			return self
+
+		def __exit__(self, *args):
+			return False
+
+		def text(self, xy, text, font=None, fill=None, **kwargs):
+			self._draw.text(xy, text, font=font, fill=fill)
+
+	monkeypatch.setattr(module, "Pilmoji", OfflinePilmoji)
+
+
+def open_png(data: bytes) -> Image.Image:
+	return Image.open(io.BytesIO(data)).convert("RGB")
+
+
+def ink_bbox(image: Image.Image, box=None):
+	"""返回区域内墨迹（暗色像素）的包围盒，用于判断是否越界。"""
+	region = image.crop(box) if box else image
+	mask = region.convert("L").point(lambda value: 255 if value < 200 else 0)
+	return mask.getbbox()
+
+
+def ink_pixels(image: Image.Image, box=None) -> int:
+	"""区域内墨迹像素数量，用于比较某块区域是否新增了文字。"""
+	region = image.crop(box) if box else image
+	mask = region.convert("L").point(lambda value: 255 if value < 200 else 0)
+	return mask.histogram()[255]
+
+
+def first_ink_row(image: Image.Image, y_from: int, margin: int) -> int:
+	"""自 y_from 起逐行扫描，返回第一行存在墨迹的 y 坐标。"""
+	for y in range(y_from, image.size[1] - 1):
+		if ink_pixels(image, (margin, y, image.size[0] - margin, y + 1)) > 0:
+			return y
+	raise AssertionError("区域下方未找到任何墨迹")
+
+
+def header_bottom(image: Image.Image, margin: int, brand_color) -> int:
+	"""沿水平中线向下找到蓝色头部结束的位置。"""
+	width, height = image.size
+	pixels = image.load()
+	for y in range(margin, height):
+		if pixels[width // 2, y] != brand_color:
+			return y
+	raise AssertionError("未找到品牌头部下边界")
+
+
+def color_count(image: Image.Image, box, color) -> int:
+	colors = image.crop(box).getcolors(maxcolors=image.size[0] * image.size[1])
+	return dict((pixel, count) for count, pixel in colors).get(color, 0)
+
+
+def content_limits(renderer, width: int = 800):
+	margin = renderer.OUTER_MARGIN
+	card_right = width - margin
+	return margin + renderer.padding, card_right - renderer.padding
+
+
+def test_render_keeps_legacy_calls_working():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	png = renderer.render("系统告警")
+	assert png.startswith(b"\x89PNG")
+
+	encoded = renderer.render_to_base64("系统告警")
+	assert encoded.startswith("base64://")
+	assert base64.b64decode(encoded[len("base64://"):]) == png
+
+	# 历史调用方式（位置参数传 title）依然可用
+	assert renderer.render("系统告警", "自定义标题").startswith(b"\x89PNG")
+	assert renderer.render_to_base64("系统告警", title="自定义标题").startswith("base64://")
+
+
+def test_card_uses_cool_gray_backdrop_and_blue_brand_header():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+	renderer_class = module.ImageRenderer
+
+	image = open_png(renderer.render("卡片版式校验", scene="group"))
+	width, height = image.size
+	margin = renderer_class.OUTER_MARGIN
+
+	assert width == renderer.width == 800
+	assert image.getpixel((2, 2)) == renderer_class.OUTER_BG_COLOR
+	assert image.getpixel((width - 3, height - 3)) == renderer_class.OUTER_BG_COLOR
+	assert image.getpixel((width // 2, margin + 5)) == renderer_class.BRAND_COLOR
+	assert image.getpixel((width // 2, height - margin - 5)) == renderer.bg_color
+
+
+def test_scene_badges_distinguish_group_and_private_notifications():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	common = renderer.render("同一段通知内容", scene="common")
+	group = renderer.render("同一段通知内容", scene="group")
+	private = renderer.render("同一段通知内容", scene="private")
+
+	assert len({common, group, private}) == 3
+
+	margin = renderer.OUTER_MARGIN
+	header_box = (margin, margin, 800 - margin, margin + 80)
+	private_image = open_png(private)
+	common_image = open_png(common)
+
+	# 徽章为白色胶囊，文字使用场景强调色
+	assert color_count(private_image, header_box, renderer.BADGE_BG_COLOR) > 200
+	assert color_count(private_image, header_box, renderer.SCENE_STYLES["private"]["color"]) > 0
+	assert color_count(common_image, header_box, renderer.SCENE_STYLES["common"]["color"]) > 0
+	assert color_count(common_image, header_box, renderer.SCENE_STYLES["private"]["color"]) == 0
+
+
+def test_unknown_scene_falls_back_to_common_style():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	assert renderer._scene_style("group")["label"] == "群聊通知"
+	assert renderer._scene_style("private")["label"] == "私聊通知"
+
+	unknown = renderer._scene_style("nope")
+	assert unknown["label"] == renderer.SCENE_STYLES[renderer.DEFAULT_SCENE]["label"]
+	assert unknown["color"] == renderer.SCENE_STYLES[renderer.DEFAULT_SCENE]["color"]
+
+	assert renderer.render("未知场景", scene="nope") == renderer.render("未知场景", scene="common")
+
+
+def test_long_text_wraps_without_leaving_the_card():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	content_left, content_right = content_limits(renderer)
+	content_width = content_right - content_left
+
+	lines = renderer._wrap_text("超长文本测试，" * 200, content_width)
+	assert all(renderer._measure_text(line, renderer.font) <= content_width for line in lines)
+	assert "".join(lines) == "超长文本测试，" * 200
+
+	image = open_png(renderer.render("超长文本测试，" * 200, scene="group"))
+	width, height = image.size
+	margin = renderer.OUTER_MARGIN
+	header_end = header_bottom(image, margin, renderer.BRAND_COLOR)
+	body_box = (margin, header_end + 1, width - margin, height - margin)
+
+	left, top, right, bottom = ink_bbox(image, body_box)
+	absolute = (body_box[0] + left, body_box[1] + top, body_box[0] + right, body_box[1] + bottom)
+	assert absolute[0] >= content_left
+	assert absolute[2] <= content_right
+	assert absolute[3] < height - margin
+
+
+def test_explicit_newlines_and_blank_lines_are_preserved():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+	content_left, content_right = content_limits(renderer)
+
+	lines = renderer._wrap_text("第一行\n第二行\n\n第四行", content_right - content_left)
+
+	assert lines == ["第一行", "第二行", "", "第四行"]
+
+
+def test_cjk_punctuation_does_not_start_or_end_a_line():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+	content_left, content_right = content_limits(renderer)
+	content_width = content_right - content_left
+
+	cases = [
+		# 28 个全角汉字正好铺满一行，逗号会落在下一行行首
+		"甲" * 28 + "，后续内容" + "乙" * 26 + "（括号内容）",
+		# 27 个汉字加左括号刚好占满，右括号内容会被挤到下一行，左括号不能留在行尾
+		"甲" * 27 + "（乙" * 20,
+	]
+
+	for text in cases:
+		lines = renderer._wrap_text(text, content_width)
+
+		assert "".join(lines) == text
+		for line in lines:
+			if line:
+				assert line[0] not in module.ImageRenderer.LINE_START_FORBIDDEN
+				assert renderer._measure_text(line, renderer.font) <= content_width
+		for line in lines[:-1]:
+			assert line[-1] not in module.ImageRenderer.LINE_END_FORBIDDEN
+
+
+def test_emoji_is_measured_as_square_and_kept_whole():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	atoms = list(renderer._iter_atoms("🏇出发", renderer.font))
+	assert atoms[0][0] == "🏇"
+	assert atoms[0][1] == renderer.font.size
+
+	# ZWJ 组合、肤色修饰、区域指示符组合都不应被拆开
+	family, flag = "👨‍👩‍👧", "🇨🇳"
+	atoms = list(renderer._iter_atoms(f"👍🏻{family}{flag}赞", renderer.font))
+	groups = [atom for atom, _ in atoms]
+	assert "👍🏻" in groups
+	assert family in groups
+	assert flag in groups
+
+
+def test_emoji_text_does_not_overflow_the_card(monkeypatch):
+	module = load_image_renderer()
+	install_offline_pilmoji(monkeypatch, module)
+	renderer = build_renderer(module)
+
+	content_left, content_right = content_limits(renderer)
+	content_width = content_right - content_left
+
+	text = "🏇🎉😀 中文与 Emoji 混排的长通知，" * 20
+	lines = renderer._wrap_text(text, content_width)
+	assert "".join(lines) == text
+	assert all(renderer._measure_text(line, renderer.font) <= content_width for line in lines)
+
+	image = open_png(renderer.render(text, scene="group"))
+	width, height = image.size
+	margin = renderer.OUTER_MARGIN
+	header_end = header_bottom(image, margin, renderer.BRAND_COLOR)
+	body_box = (margin, header_end + 1, width - margin, height - margin)
+	left, _, right, _ = ink_bbox(image, body_box)
+	assert body_box[0] + left >= content_left
+	assert body_box[0] + right <= content_right
+
+
+def test_body_line_height_is_at_least_one_point_six(monkeypatch):
+	module = load_image_renderer()
+	renderer = build_renderer(module, line_spacing=1.2)
+
+	single = open_png(renderer.render("单行"))
+	double = open_png(renderer.render("第一行\n第二行"))
+	line_height = double.size[1] - single.size[1]
+
+	assert line_height > 0
+	assert line_height >= int(renderer._text_size("测试", renderer.font)[1] * 1.6)
+
+
+def test_default_title_keeps_legacy_text_and_none_hides_it(monkeypatch):
+	"""默认标题沿用旧版文案（向后兼容），显式 None / 空字符串才隐藏标题行。"""
+	module = load_image_renderer()
+	install_offline_pilmoji(monkeypatch, module)
+	renderer = build_renderer(module)
+
+	assert module.ImageRenderer.DEFAULT_TITLE == "蛋定助手通知您："
+
+	default_image = open_png(renderer.render("正文内容"))
+	hidden_image = open_png(renderer.render("正文内容", title=None))
+	empty_image = open_png(renderer.render("正文内容", title=""))
+	custom_image = open_png(renderer.render("正文内容", title="🏇 赛马开赛"))
+
+	# 默认渲染比显式隐藏多一行标题
+	assert default_image.size[1] > hidden_image.size[1]
+	# 显式 None 与空字符串等效，且自定义单行标题与默认标题高度一致
+	assert hidden_image.size[1] == empty_image.size[1]
+	assert custom_image.size[1] == default_image.size[1]
+
+	# 默认渲染在头部下方先画标题行，显式隐藏时同一位置直接是正文
+	margin = renderer.OUTER_MARGIN
+	header_end = header_bottom(default_image, margin, module.ImageRenderer.BRAND_COLOR)
+	top_band = (
+		margin,
+		header_end + renderer.padding + 1,
+		default_image.size[0] - margin,
+		header_end + renderer.padding + 40,
+	)
+	default_band = ink_bbox(default_image, top_band)
+	hidden_band = ink_bbox(hidden_image, top_band)
+
+	assert default_band is not None and hidden_band is not None
+	# 隐藏标题时正文紧贴头部内边距开始
+	assert first_ink_row(hidden_image, header_end + 1, margin) >= header_end + renderer.padding
+	# 标题「蛋定助手通知您：」明显宽于正文「正文内容」，据此确认标题行确实绘制了
+	assert (default_band[2] - default_band[0]) > (hidden_band[2] - hidden_band[0]) * 1.5
+
+	# render_to_base64 同样继承默认标题文案
+	encoded = renderer.render_to_base64("正文内容")
+	assert open_png(base64.b64decode(encoded[len("base64://"):])).size == default_image.size
+
+
+def test_empty_text_keeps_placeholder_and_minimum_height():
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	image = open_png(renderer.render(""))
+	margin = renderer.OUTER_MARGIN
+	header_end = header_bottom(image, margin, renderer.BRAND_COLOR)
+	body_box = (margin, header_end + 1, image.size[0] - margin, image.size[1] - margin)
+
+	assert image.size[1] >= module.ImageRenderer.MIN_HEIGHT
+	assert ink_bbox(image, body_box) is not None
+
+
+def test_render_falls_back_to_plain_text_when_emoji_source_fails(monkeypatch):
+	module = load_image_renderer()
+	renderer = build_renderer(module)
+
+	class BrokenPilmoji:
+		def __init__(self, image):
+			self.image = image
+
+		def __enter__(self):
+			return self
+
+		def __exit__(self, *args):
+			return False
+
+		def text(self, *args, **kwargs):
+			raise RuntimeError("emoji 源不可用")
+
+	monkeypatch.setattr(module, "Pilmoji", BrokenPilmoji)
+
+	png = renderer.render("降级测试 🏇", scene="private")
+
+	assert png.startswith(b"\x89PNG")
+	assert renderer._emoji_enabled is False
+
+
+def test_pure_black_text_color_falls_back_to_soft_ink():
+	module = load_image_renderer()
+
+	assert build_renderer(module, text_color=(0, 0, 0)).text_color == module.ImageRenderer.DEFAULT_TEXT_COLOR
+	assert build_renderer(module, text_color=(10, 20, 30)).text_color == (10, 20, 30)
+	assert module.ImageRenderer.DEFAULT_TEXT_COLOR != (0, 0, 0)

tests/test_danding_qqpush_test_command.py

@@ -0,0 +1,538 @@
+"""通知图片测试命令测试：命令/别名、固定预览内容、群聊/私聊场景与发送约定。
+
+直接导入插件包会触发 NoneBot 插件初始化，因此这里按路径加载 test_command.py，
+同级模块用轻量替身（text_parser 用真实实现，命令匹配与权限用真实 NoneBot 规则）。
+"""
+import ast
+import asyncio
+import base64
+import importlib.util
+import io
+import logging
+import os
+import sys
+import types
+from contextlib import contextmanager
+from pathlib import Path
+
+import nonebot
+import pytest
+from nonebot.adapters.onebot.v11 import Message, MessageSegment
+from nonebot.adapters.onebot.v11.event import MessageEvent
+from nonebot.rule import CommandRule
+
+PLUGIN_DIR = (
+	Path(__file__).resolve().parents[1]
+	/ "danding_bot"
+	/ "plugins"
+	/ "danding_qqpush"
+).resolve()
+PACKAGE_NAME = "danding_bot.plugins.danding_qqpush"
+
+# 与 .env 中的 SUPERUSERS 一致，用于权限判定
+SUPERUSER_ID = 1424473282
+NON_SUPERUSER_ID = 10001111
+
+
+class ConfigStub:
+	"""渲染器所需配置字段的轻量替身。"""
+
+	Token = "danding-test"
+	ImageWidth = 800
+	ImageFontSize = 24
+	ImagePadding = 30
+	ImageLineSpacing = 1.4
+	ImageBgColor = (252, 252, 252)
+	ImageTextColor = (0, 0, 0)
+	MaxTextLength = 2000
+	FontPaths = ["C:/Windows/Fonts/msyh.ttc"]
+
+
+class ImageRendererStub:
+	"""只记录构造参数的替身，用于验证渲染器按配置构建。"""
+
+	def __init__(self, **kwargs):
+		self.kwargs = kwargs
+
+	def render_to_base64(self, text, title=None, scene="common"):
+		return "base64://" + base64.b64encode(b"fake-png").decode("utf-8")
+
+
+class FakeMessageEvent:
+	"""仅保留 scene 判定需要的字段。"""
+
+	def __init__(self, group_id=None, user_id=10001):
+		self.group_id = group_id
+		self.user_id = user_id
+
+
+class FakeMatcher:
+	"""记录 finish 调用（失败提示走这里）。"""
+
+	def __init__(self):
+		self.finished = []
+
+	async def finish(self, message=None, **kwargs):
+		self.finished.append(message)
+
+
+class RecordingBot:
+	"""记录 bot.send 的 (event, message)。"""
+
+	def __init__(self):
+		self.sent = []
+
+	async def send(self, event, message, **kwargs):
+		self.sent.append((event, message))
+		return {"message_id": len(self.sent)}
+
+
+def build_permission_bot(driver):
+	"""构造权限判定用的真实 OneBot V11 Bot。
+
+	matcher.permission 经 NoneBot 依赖注入会校验 bot 类型，
+	必须是真正的 nonebot.adapters.Bot，所以用真实 Adapter + Bot，
+	并把已初始化驱动配置中的超级用户列表（字符串化）拷进 Bot 配置，
+	保证超级用户判定与真实运行时一致且不产生 pydantic 归一化告警。
+	"""
+	from nonebot.adapters.onebot.v11.adapter import Adapter
+	from nonebot.adapters.onebot.v11.bot import Bot
+
+	bot = Bot(Adapter(driver), self_id="10000")
+	bot.config.superusers = {str(user_id) for user_id in driver.config.superusers}
+	return bot
+
+
+@contextmanager
+def silence_nonebot_logs():
+	"""初始化期间完全静默 NoneBot 日志，避免把 .env 配置打进测试输出。"""
+	logging.getLogger("nonebot").setLevel(logging.CRITICAL + 1)
+	try:
+		yield
+	finally:
+		logging.getLogger("nonebot").setLevel(logging.CRITICAL)
+
+
+def ensure_nonebot_initialized():
+	"""on_command 需要已初始化的 NoneBot：只创建驱动，不启动服务、不加载插件。"""
+	try:
+		nonebot.get_driver()
+	except ValueError:
+		with silence_nonebot_logs():
+			nonebot.init(
+				log_level="CRITICAL",
+				driver="~fastapi+~websockets",
+				host="127.0.0.1",
+				port=18080,
+			)
+	driver = nonebot.get_driver()
+	# 保证超级用户判定不受 .env 的 SUPERUSERS 配置影响；
+	# 与 .env 一致使用字符串形式，避免驱动配置被 int/str 混装归一化
+	if str(SUPERUSER_ID) not in driver.config.superusers:
+		driver.config.superusers.add(str(SUPERUSER_ID))
+	return driver
+
+
+def _load_module(name, path):
+	spec = importlib.util.spec_from_file_location(f"{PACKAGE_NAME}.{name}", path)
+	module = importlib.util.module_from_spec(spec)
+	sys.modules[spec.name] = module
+	spec.loader.exec_module(module)
+	return module
+
+
+def load_test_command():
+	"""按路径加载 test_command.py，同时用替身满足同级模块依赖。"""
+	if PACKAGE_NAME in sys.modules:
+		return sys.modules[PACKAGE_NAME + ".test_command"]
+
+	ensure_nonebot_initialized()
+
+	package = types.ModuleType(PACKAGE_NAME)
+	package.__path__ = [str(PLUGIN_DIR)]
+	sys.modules[PACKAGE_NAME] = package
+
+	# text_parser 用真实实现：预览文本要经它把 # 解析为换行
+	_load_module("text_parser", PLUGIN_DIR / "text_parser.py")
+
+	config_module = types.ModuleType(PACKAGE_NAME + ".config")
+	config_module.Config = ConfigStub
+	sys.modules[config_module.__name__] = config_module
+
+	image_render_module = types.ModuleType(PACKAGE_NAME + ".image_render")
+	image_render_module.ImageRenderer = ImageRendererStub
+	sys.modules[image_render_module.__name__] = image_render_module
+
+	# preview_image_render 是 test_command 唯一依赖的同级辅助模块
+	_load_module("preview_image_render", PLUGIN_DIR / "preview_image_render.py")
+
+	module = _load_module("test_command", PLUGIN_DIR / "test_command.py")
+	# 供 handler 测试使用的插件配置替身
+	package.plugin_config = ConfigStub()
+	return module
+
+
+def load_real_image_renderer():
+	"""按路径加载真实渲染模块（不引入 NoneBot）。"""
+	name = PACKAGE_NAME + ".real_image_render"
+	if name in sys.modules:
+		return sys.modules[name]
+	# 真实 image_render 不含相对导入，直接按路径加载即可
+	path = PLUGIN_DIR / "image_render.py"
+	spec = importlib.util.spec_from_file_location(name, path)
+	module = importlib.util.module_from_spec(spec)
+	sys.modules[spec.name] = module
+	spec.loader.exec_module(module)
+	return module
+
+
+def source_tree():
+	tree = ast.parse((PLUGIN_DIR / "test_command.py").read_text(encoding="utf-8"))
+	if os.getenv("DSH_DEBUG_QQPUSH"):
+		print(
+			"\nDEBUG async nodes:",
+			[
+				(n.name, [is_handle_decorator(d) for d in n.decorator_list])
+				for n in ast.walk(tree)
+				if isinstance(n, ast.AsyncFunctionDef)
+			],
+		)
+	return tree
+
+
+def source_text() -> str:
+	return (PLUGIN_DIR / "test_command.py").read_text(encoding="utf-8")
+
+
+def build_event(text: str, group_id: int | None = None, user_id: int = SUPERUSER_ID):
+	"""构造 OneBot V11 消息事件，用于命令匹配与权限判定。"""
+	if group_id is None:
+		return MessageEvent(
+			time=0,
+			self_id=10000,
+			post_type="message",
+			sub_type="friend",
+			user_id=user_id,
+			message_type="private",
+			message_id=1,
+			message=Message(text),
+			original_message=Message(text),
+			raw_message=text,
+			font=0,
+			sender={"user_id": user_id},
+		)
+	return MessageEvent(
+		time=0,
+		self_id=10000,
+		post_type="message",
+		sub_type="normal",
+		user_id=user_id,
+		message_type="group",
+		message_id=1,
+		message=Message(text),
+		original_message=Message(text),
+		raw_message=text,
+		font=0,
+		sender={"user_id": user_id},
+		group_id=group_id,
+	)
+
+
+def command_matches(matcher, event) -> bool:
+	"""按 NoneBot 依赖注入的语义执行命令匹配规则。"""
+	state: dict = {}
+	for checker in matcher.rule.checkers:
+		if isinstance(checker.call, CommandRule):
+			state = {
+				"_prefix": {
+					"command": (event.get_plaintext().strip(),),
+					"command_arg": None,
+					"command_whitespace": None,
+				}
+			}
+			break
+	return asyncio.run(matcher.rule(build_permission_bot(nonebot.get_driver()), event, state))
+
+
+def has_permission(matcher, event) -> bool:
+	"""按 NoneBot 运行时约定调用 matcher 的 permission（Superuser 需要 bot.adapter/bot.config）。"""
+	return asyncio.run(
+		matcher.permission(build_permission_bot(nonebot.get_driver()), event)
+	)
+
+
+def test_main_command_and_aliases_are_registered_and_match_plain_messages():
+	"""主命令「测试通知图片」与两个别名都要能直接触发（群聊、私聊都不需要 @机器人）。"""
+	module = load_test_command()
+	matcher = module.test_notification_image
+
+	assert module.TEST_COMMAND == "测试通知图片"
+	assert set(module.TEST_COMMAND_ALIASES) == {"通知图片测试", "测试通知卡片"}
+
+	for text in (module.TEST_COMMAND, *module.TEST_COMMAND_ALIASES):
+		for group_id in (None, 621016172):
+			assert command_matches(
+				matcher, build_event(text, group_id)
+			), f"命令 {text} 应可触发（group_id={group_id}）"
+
+	# 无关消息不触发
+	for text in ("测试通知", "通知图片", "测试通知图片额外内容"):
+		assert not command_matches(matcher, build_event(text))
+
+
+def test_command_is_superuser_only_and_not_at_restricted():
+	module = load_test_command()
+	matcher = module.test_notification_image
+
+	call = command_registration_source()
+	keywords = keyword_names(call)
+
+	permission = keywords["permission"]
+	assert isinstance(permission, ast.Name) and permission.id == "SUPERUSER"
+	assert any(
+		isinstance(node, ast.ImportFrom)
+		and node.module == "nonebot.permission"
+		and any(alias.name == "SUPERUSER" for alias in node.names)
+		for node in ast.walk(source_tree())
+	)
+
+	# 群聊与私聊都要能触发：不限制 to_me，也不限制会话类型
+	assert "rule" not in keywords
+	assert ast.literal_eval(keywords["block"]) is True
+	assert "to_me" not in source_text()
+
+	# 权限判定走真实 NoneBot Permission 对象
+	assert has_permission(matcher, build_event(module.TEST_COMMAND)) is True
+	assert not has_permission(
+		matcher, build_event(module.TEST_COMMAND, user_id=NON_SUPERUSER_ID)
+	)
+
+
+def test_single_handler_is_registered_on_the_matcher():
+	handlers = [
+		node
+		for node in ast.walk(source_tree())
+		if isinstance(node, ast.AsyncFunctionDef)
+		if any(is_handle_decorator(decorator) for decorator in node.decorator_list)
+	]
+	assert [node.name for node in handlers] == ["handle_test_notification_image"]
+	assert [arg.arg for arg in handlers[0].args.args] == ["matcher", "bot", "event"]
+	# 使用当前事件的 Bot 发送，渲染放到线程池
+	assert "bot.send(event, build_message(image_base64))" in source_text()
+	assert "asyncio.to_thread" in source_text()
+
+
+def test_plugin_package_registers_the_test_command():
+	"""插件包导入时须加载该模块，命令才会真正注册。"""
+	source = (PLUGIN_DIR / "__init__.py").read_text(encoding="utf-8")
+
+	assert any(
+		isinstance(node, ast.ImportFrom)
+		and node.module is None
+		and any(alias.name == "test_command" for alias in node.names)
+		for node in ast.walk(ast.parse(source))
+	), "插件 __init__.py 应以相对导入加载 test_command"
+	assert "测试通知图片" in source
+	assert source.index("plugin_config = Config.model_validate") < source.index(
+		"from . import test_command"
+	), "插件包须先完成配置初始化，再导入测试命令"
+
+
+def test_preview_content_covers_title_chinese_multiline_emoji_and_punctuation():
+	module = load_test_command()
+	text = module.preview_text()
+
+	assert module.PREVIEW_TITLE
+	# 标题同时演示 # 作为换行符的用法
+	assert module.PREVIEW_TITLE != module.PREVIEW_TITLE.replace("#", "")
+
+	# 标题、中文、多行、Emoji 与中文标点都要有，方便肉眼核对版式
+	assert "#" in text, "预览文本应使用 # 表示换行"
+	assert any("\u4e00" <= char <= "\u9fff" for char in text), "预览应包含中文"
+	assert len(text.split("#")) >= 3, "预览应为多行内容"
+	assert any(char in text for char in "，。、；：！？"), "预览应包含中文标点"
+	assert any(ord(char) > 0x1F000 for char in text), "预览应包含 Emoji"
+
+	# 经 TextParser 解析后，与 PREVIEW_TEXT 完全一致（# 均表示换行）
+	parser = sys.modules[PACKAGE_NAME + ".text_parser"].TextParser(
+		max_length=ConfigStub.MaxTextLength
+	)
+	assert parser.parse(text) == module.PREVIEW_TEXT
+	assert module.PREVIEW_TEXT.count("\n") == text.count("#")
+	assert "#" not in module.PREVIEW_TEXT
+
+
+def test_scene_resolution_uses_group_for_group_events_and_private_otherwise():
+	module = load_test_command()
+
+	assert module.resolve_scene(FakeMessageEvent(group_id=123456789)) == "group"
+	assert module.resolve_scene(FakeMessageEvent()) == "private"
+	# group_id=0 视为无效群号，同样回退到私聊
+	assert module.resolve_scene(FakeMessageEvent(group_id=0)) == "private"
+	assert module.resolve_scene(build_event("测试通知图片", 621016172)) == "group"
+	assert module.resolve_scene(build_event("测试通知图片")) == "private"
+
+	# 两个场景徽章都由现有渲染器提供，测试命令不新增场景
+	real = load_real_image_renderer()
+	assert "group" in real.ImageRenderer.SCENE_STYLES
+	assert "private" in real.ImageRenderer.SCENE_STYLES
+
+
+def test_render_runs_in_thread_and_passes_scene_and_title(monkeypatch):
+	module = load_test_command()
+	calls = []
+
+	class RecordingRenderer:
+		def render_to_base64(self, text, title=None, scene="common"):
+			calls.append({"text": text, "title": title, "scene": scene})
+			return "base64://cG5n"
+
+	monkeypatch.setattr(module, "get_preview_renderer", lambda config: RecordingRenderer())
+	real_to_thread = asyncio.to_thread
+	to_thread_calls = []
+
+	async def spy_to_thread(func, *args, **kwargs):
+		to_thread_calls.append(func)
+		return await real_to_thread(func, *args, **kwargs)
+
+	monkeypatch.setattr(module.asyncio, "to_thread", spy_to_thread)
+
+	for group_id, expected_scene in ((987654321, "group"), (None, "private")):
+		calls.clear()
+		to_thread_calls.clear()
+		matcher = FakeMatcher()
+		bot = RecordingBot()
+
+		asyncio.run(
+			module.handle_test_notification_image(
+				matcher, bot, FakeMessageEvent(group_id=group_id)
+			)
+		)
+
+		assert to_thread_calls, "Pillow 渲染必须放到 asyncio.to_thread"
+		assert [call["scene"] for call in calls] == [expected_scene]
+		assert calls[0]["title"] == module.PREVIEW_TITLE
+		assert calls[0]["text"] == module.PREVIEW_TEXT
+		assert calls[0]["text"] == module.preview_text().replace("#", "\n")
+		assert not matcher.finished
+
+
+def test_handler_sends_onebot_v11_image_message_via_event_bot():
+	module = load_test_command()
+	matcher = FakeMatcher()
+	bot = RecordingBot()
+	event = FakeMessageEvent(group_id=1)
+
+	rendered = "base64://" + base64.b64encode(b"png-bytes").decode("utf-8")
+	message = module.build_message(rendered)
+
+	assert message[0].type == "image"
+	assert message[0].data["file"] == rendered
+	assert module.build_message(rendered) == message
+
+	asyncio.run(module.handle_test_notification_image(matcher, bot, event))
+
+	assert len(bot.sent) == 1
+	sent_event, sent_message = bot.sent[0]
+	assert sent_event is event
+	assert sent_message[0].type == "image"
+	assert sent_message[0].data["file"].startswith("base64://")
+	assert not matcher.finished
+
+
+def test_render_failure_logs_and_replies_with_readable_hint(monkeypatch):
+	module = load_test_command()
+	matcher = FakeMatcher()
+	bot = RecordingBot()
+	logged = []
+
+	class BrokenRenderer:
+		def render_to_base64(self, text, title=None, scene="common"):
+			raise RuntimeError("字体缺失")
+
+	monkeypatch.setattr(module, "get_preview_renderer", lambda config: BrokenRenderer())
+	monkeypatch.setattr(module.logger, "error", lambda message: logged.append(str(message)))
+
+	asyncio.run(module.handle_test_notification_image(matcher, bot, FakeMessageEvent()))
+
+	assert not bot.sent
+	assert len(matcher.finished) == 1
+	assert isinstance(matcher.finished[0], str)
+	assert "字体缺失" in logged[0]
+	assert "scene=private" in logged[0]
+
+
+def test_preview_renderer_is_built_from_plugin_config_and_reused():
+	module = load_test_command()
+	helper = sys.modules[PACKAGE_NAME + ".preview_image_render"]
+	helper._preview_renderer = None
+
+	first = module.get_preview_renderer(ConfigStub())
+	second = module.get_preview_renderer(ConfigStub())
+
+	assert isinstance(first, ImageRendererStub)
+	assert first is second, "渲染器实例应被缓存复用"
+	assert first.kwargs["width"] == ConfigStub.ImageWidth
+	assert first.kwargs["font_size"] == ConfigStub.ImageFontSize
+	assert first.kwargs["padding"] == ConfigStub.ImagePadding
+	assert first.kwargs["line_spacing"] == ConfigStub.ImageLineSpacing
+	assert tuple(first.kwargs["bg_color"]) == tuple(ConfigStub.ImageBgColor)
+	assert tuple(first.kwargs["text_color"]) == tuple(ConfigStub.ImageTextColor)
+	assert list(first.kwargs["font_paths"]) == list(ConfigStub.FontPaths)
+
+	helper._preview_renderer = None
+
+
+def test_preview_renders_through_the_shared_renderer():
+	"""预览内容必须能真正渲染成通知卡片（使用真实 ImageRenderer）。"""
+	module = load_test_command()
+	real = load_real_image_renderer()
+	renderer = real.ImageRenderer(
+		width=800, font_size=24, padding=30, font_paths=ConfigStub.FontPaths
+	)
+
+	png = renderer.render(module.PREVIEW_TEXT, title=module.PREVIEW_TITLE, scene="group")
+	assert png.startswith(b"\x89PNG")
+
+	from PIL import Image
+
+	image = Image.open(io.BytesIO(png))
+	assert image.size[0] == 800
+	assert image.size[1] >= real.ImageRenderer.MIN_HEIGHT
+
+	encoded = renderer.render_to_base64(
+		module.PREVIEW_TEXT, module.PREVIEW_TITLE, "private"
+	)
+	assert encoded.startswith("base64://")
+	assert base64.b64decode(encoded[len("base64://"):]) == renderer.render(
+		module.PREVIEW_TEXT, title=module.PREVIEW_TITLE, scene="private"
+	)
+
+
+def is_handle_decorator(decorator) -> bool:
+	"""识别 @matcher.handle 与 @matcher.handle() 两种等价写法。"""
+	target = decorator.func if isinstance(decorator, ast.Call) else decorator
+	return isinstance(target, ast.Attribute) and target.attr == "handle"
+
+
+def command_registration_source():
+	"""解析 test_command.py 中 on_command 的注册调用。"""
+	for node in ast.walk(source_tree()):
+		if not isinstance(node, ast.Call):
+			continue
+		func = node.func
+		if isinstance(func, ast.Name) and func.id == "on_command":
+			return node
+	raise AssertionError("test_command.py 中未找到 on_command 注册调用")
+
+
+def keyword_names(call):
+	return {
+		keyword.arg: keyword.value
+		for keyword in call.keywords
+		if keyword.arg is not None
+	}
+
+
+if __name__ == "__main__":  # pragma: no cover
+	raise SystemExit(pytest.main([__file__, "-q"]))