"""Tests for M15 session-scoped system-log collection (kernel + coredumps)."""

import unittest
from unittest import mock

from rigdoctor.core import syslogs


class KernelLogTests(unittest.TestCase):
    def test_passes_since_and_tails(self):
        with mock.patch("shutil.which", return_value="/usr/bin/journalctl"), \
             mock.patch.object(syslogs, "_run", return_value="X" * 100 + "TAILLINE") as run:
            out = syslogs.kernel_log(since=1_000_000_000, max_bytes=8)
        self.assertEqual(out, "TAILLINE")
        cmd = run.call_args[0][0]
        self.assertIn("-k", cmd)
        self.assertIn("--since", cmd)

    def test_missing_tool_returns_empty(self):
        with mock.patch("shutil.which", return_value=None):
            self.assertEqual(syslogs.kernel_log(), "")


class CoredumpTests(unittest.TestCase):
    def test_empty_when_no_coredumps(self):
        with mock.patch("shutil.which", return_value="/usr/bin/coredumpctl"), \
             mock.patch.object(syslogs, "_run", return_value="No coredumps found."):
            self.assertEqual(syslogs.coredumps(), "")

    def test_returns_list(self):
        with mock.patch("shutil.which", return_value="/usr/bin/coredumpctl"), \
             mock.patch.object(syslogs, "_run", return_value="TIME PID SIG EXE\n... SEGV PathOfExile"):
            out = syslogs.coredumps()
        self.assertIn("PathOfExile", out)


class CollectTests(unittest.TestCase):
    def test_collect_combines_sections(self):
        with mock.patch.object(syslogs, "kernel_log", return_value="NVRM: Xid 79"), \
             mock.patch.object(syslogs, "coredumps", return_value="game SIGSEGV"):
            out = syslogs.collect()
        self.assertIn("Kernel log", out)
        self.assertIn("Xid 79", out)
        self.assertIn("Crashed processes", out)
        self.assertIn("SIGSEGV", out)

    def test_collect_empty_when_nothing(self):
        with mock.patch.object(syslogs, "kernel_log", return_value=""), \
             mock.patch.object(syslogs, "coredumps", return_value=""):
            self.assertEqual(syslogs.collect(), "")


if __name__ == "__main__":
    unittest.main()