# tests/unit/test_metrics.py

from prometheus_client import Counter, Gauge

import scouter.metrics as metrics

# --- Test Functions for Each Metric (Corrected for v0.22.0 _name behavior) ---


def test_scouter_laborious_data_written_count():
    """Verify the definition of LABORIOUS_DATA_WRITTEN_COUNT."""
    assert metrics.LABORIOUS_DATA_WRITTEN_COUNT is not None
    assert isinstance(metrics.LABORIOUS_DATA_WRITTEN_COUNT, Counter)
    assert metrics.LABORIOUS_DATA_WRITTEN_COUNT._name == 'scouter_laborious_data_written_count'
    assert set(metrics.LABORIOUS_DATA_WRITTEN_COUNT._labelnames) == {
        'pod_id',
        'model_name',
        'pipeline_name',
    }


def test_scouter_tag_changes_monitor():
    """Verify the definition of TAG_CHANGES_MONITOR."""
    assert metrics.TAG_CHANGES_MONITOR is not None
    assert isinstance(metrics.TAG_CHANGES_MONITOR, Gauge)
    assert metrics.TAG_CHANGES_MONITOR._name == 'scouter_tag_changes_monitor'
    assert set(metrics.TAG_CHANGES_MONITOR._labelnames) == {
        'pod_id',
        'model_name',
        'pipeline_name',
        'tag_name',
    }