package queryrange

import (
	"testing"

	"github.com/prometheus/prometheus/promql"
	"github.com/stretchr/testify/require"

	"github.com/grafana/loki/pkg/loghttp"
	"github.com/grafana/loki/pkg/logqlmodel"
	"github.com/grafana/loki/pkg/querier/queryrange/queryrangebase"
)

func TestResultToResponse(t *testing.T) {
	tests := []struct {
		name     string
		result   logqlmodel.Result
		response queryrangebase.Response
	}{
		{
			name: "nil matrix",
			result: logqlmodel.Result{
				Data: promql.Matrix(nil),
			},
			response: &LokiPromResponse{
				Response: &queryrangebase.PrometheusResponse{
					Status: "success",
					Data: queryrangebase.PrometheusData{
						ResultType: loghttp.ResultTypeMatrix,
						Result:     []queryrangebase.SampleStream{},
					},
				},
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			actual, err := ResultToResponse(tt.result, nil)
			require.NoError(t, err)

			require.Equal(t, tt.response, actual)
		})
	}
}