"""Smoke tests for the sensor core (stdlib unittest; no hardware assumptions)."""

import unittest

from rigdoctor.core import sources
from rigdoctor.core.sample import Reading, Sample
from rigdoctor.core.sampler import Sampler
from rigdoctor.render import render_snapshot


class CoreTests(unittest.TestCase):
    def test_available_sources_returns_list(self):
        self.assertIsInstance(sources.available_sources(), list)

    def test_sample_groups_and_rows(self):
        sample = Sample(
            ts=1.0,
            readings=[
                Reading("gpu", "temp", 50.0, "°C"),
                Reading("cpu", "temp", 40.0, "°C", "Package id 0"),
            ],
        )
        self.assertEqual(set(sample.by_source()), {"gpu", "cpu"})
        rows = sample.to_rows()
        self.assertEqual(rows[0]["ts"], 1.0)
        self.assertEqual(rows[0]["source"], "gpu")

    def test_reading_handles_none_value(self):
        text = render_snapshot(Sample(readings=[Reading("gpu", "temp", None, "°C", "memory")]))
        self.assertIn("N/A", text)

    def test_sampler_runs(self):
        sample = Sampler(sources.available_sources()).sample()
        self.assertIsInstance(sample, Sample)


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