package health

import (
	"context"
	"errors"
	"testing"
)

type databaseStub struct{ err error }

func (s databaseStub) Ping(context.Context) error { return s.err }

func TestCheckReportsDatabaseReadiness(t *testing.T) {
	for _, tc := range []struct {
		name  string
		db    Database
		ready bool
	}{
		{name: "not connected", db: nil, ready: false},
		{name: "ready", db: databaseStub{}, ready: true},
		{name: "unavailable", db: databaseStub{err: errors.New("down")}, ready: false},
	} {
		t.Run(tc.name, func(t *testing.T) {
			got := NewService(tc.db).Check(context.Background())
			if !got.Serving || got.DatabaseReady != tc.ready {
				t.Fatalf("unexpected status: %+v", got)
			}
		})
	}
}