first commit

tests/test_bgi_log_format.py

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+import unittest
+from pathlib import Path
+from tempfile import TemporaryDirectory
+from types import SimpleNamespace
+from unittest.mock import patch
+
+from app.danmu_queue import BgiLogMonitor, WebServer
+
+
+class BgiLogDisplayFormatTests(unittest.TestCase):
+    def test_formats_multi_instance_log_as_single_readable_line(self):
+        raw_lines = [
+            "[23:55:25.160] [INF] [Primary:S1:P16720:T1785426828552] "
+            "BetterGenshinImpact.GameTask.TaskTriggerDispatcher\n",
+            "游戏已退出，BetterGI 自动停止截图器\n",
+            "\n",
+        ]
+
+        self.assertEqual(
+            BgiLogMonitor.format_display_lines(raw_lines),
+            ["[23:55:25] 游戏已退出，BetterGI 自动停止截图器"],
+        )
+
+    def test_formats_legacy_log_header_the_same_way(self):
+        raw_lines = [
+            "[16:39:12.328] [INF] BetterGenshinImpact.GameTask.TaskTriggerDispatcher\n",
+            "游戏已退出，BetterGI 自动停止截图器\n",
+        ]
+
+        self.assertEqual(
+            BgiLogMonitor.format_display_lines(raw_lines),
+            ["[16:39:12] 游戏已退出，BetterGI 自动停止截图器"],
+        )
+
+    def test_preserves_multiline_message_inside_one_log_entry(self):
+        raw_lines = [
+            "[10:00:00.001] [ERR] [Primary:S1:P1:T2] BetterGI.Component\n",
+            "第一行\n",
+            "第二行\n",
+            "[10:00:01.999] [INF] BetterGI.OtherComponent\n",
+            "下一条\n",
+        ]
+
+        self.assertEqual(
+            BgiLogMonitor.format_display_lines(raw_lines),
+            ["[10:00:00] 第一行\n第二行", "[10:00:01] 下一条"],
+        )
+
+    def test_frontend_reader_falls_back_to_latest_log_after_midnight(self):
+        with TemporaryDirectory() as temp_dir:
+            log_dir = Path(temp_dir) / "log"
+            log_dir.mkdir()
+            (log_dir / "better-genshin-impact20260730.log").write_text(
+                "[23:55:25.160] [INF] [Primary:S1:P16720:T1785426828552] "
+                "BetterGenshinImpact.GameTask.TaskTriggerDispatcher\n"
+                "游戏已退出，BetterGI 自动停止截图器\n",
+                encoding="utf-8",
+            )
+            server = WebServer.__new__(WebServer)
+            server.config = SimpleNamespace(bettergi_work_dir=temp_dir)
+
+            with patch("app.danmu_queue.datetime") as mocked_datetime:
+                mocked_datetime.now.return_value.strftime.return_value = "20260731"
+                result = server._read_bgi_log(50)
+
+        self.assertEqual(
+            result,
+            ["[23:55:25] 游戏已退出，BetterGI 自动停止截图器"],
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()