import pytest

from health import HealthCheck, HealthReport, HealthStatus, run_checks


class TestHealthStatus:
    def test_ok_less_than_warning(self):
        assert HealthStatus.OK.value == "ok"

    def test_warning_less_than_critical(self):
        assert HealthStatus.WARNING.value == "warning"


class TestHealthReport:
    def test_all_ok_returns_ok(self):
        checks = [
            HealthCheck("a", HealthStatus.OK, "fine", {}),
            HealthCheck("b", HealthStatus.OK, "fine", {}),
        ]
        report = run_checks(checks)
        assert report.status == HealthStatus.OK
        assert report.exit_code == 0

    def test_one_warning_returns_warning(self):
        checks = [
            HealthCheck("a", HealthStatus.OK, "fine", {}),
            HealthCheck("b", HealthStatus.WARNING, "hmm", {}),
        ]
        report = run_checks(checks)
        assert report.status == HealthStatus.WARNING
        assert report.exit_code == 1

    def test_one_critical_returns_critical(self):
        checks = [
            HealthCheck("a", HealthStatus.OK, "fine", {}),
            HealthCheck("b", HealthStatus.CRITICAL, "bad", {}),
        ]
        report = run_checks(checks)
        assert report.status == HealthStatus.CRITICAL
        assert report.exit_code == 2

    def test_critical_trumps_warning(self):
        checks = [
            HealthCheck("a", HealthStatus.WARNING, "hmm", {}),
            HealthCheck("b", HealthStatus.CRITICAL, "bad", {}),
        ]
        report = run_checks(checks)
        assert report.status == HealthStatus.CRITICAL
        assert report.exit_code == 2

    def test_empty_checks_returns_ok(self):
        report = run_checks([])
        assert report.status == HealthStatus.OK
        assert report.exit_code == 0