scraper_test.go

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package memcachedreceiver

import (
	"context"
	"path/filepath"
	"testing"
	"time"

	"github.com/stretchr/testify/require"
	"go.opentelemetry.io/collector/receiver/receivertest"

	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden"
	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest/pmetrictest"
)

func TestScraper(t *testing.T) {
	f := NewFactory()
	cfg := f.CreateDefaultConfig().(*Config)
	scraper := newMemcachedScraper(receivertest.NewNopSettings(), cfg)
	scraper.newClient = func(string, time.Duration) (client, error) {
		return &fakeClient{}, nil
	}

	actualMetrics, err := scraper.scrape(context.Background())
	require.NoError(t, err)

	expectedFile := filepath.Join("testdata", "scraper", "expected.yaml")
	expectedMetrics, err := golden.ReadMetrics(expectedFile)
	require.NoError(t, err)

	require.NoError(t, pmetrictest.CompareMetrics(expectedMetrics, actualMetrics,
		pmetrictest.IgnoreMetricDataPointsOrder(), pmetrictest.IgnoreStartTimestamp(), pmetrictest.IgnoreTimestamp()))
}