fix typo add testing for checkScraperMetrics

Author: moh-osman3

obsreport/obsreport_scraper.go

@@ -74,7 +74,7 @@ func NewScraper(cfg ScraperSettings) *Scraper {
 	return scr
 }
 
-// MustNewReceiver creates a new Scraper.
+// MustNewScraper creates a new Scraper.
 func MustNewScraper(cfg ScraperSettings) *Scraper {
 	scr, err := newScraper(cfg, featuregate.GetRegistry())
 	if err != nil {

obsreport/obsreporttest/otelprometheuschecker_test.go

@@ -47,6 +47,7 @@ func TestPromChecker(t *testing.T) {
 	pc, err := newStubPromChecker()
 	require.NoError(t, err)
 
+	scraper := config.NewComponentID("fakeScraper")
 	receiver := config.NewComponentID("fakeReceiver")
 	exporter := config.NewComponentID("fakeExporter")
 	transport := "fakeTransport"
@@ -76,6 +77,11 @@ func TestPromChecker(t *testing.T) {
 		"invalid metric type should return error",
 	)
 
+	assert.NoError(t,
+		pc.checkScraperMetrics(receiver, scraper, 7, 41),
+		"metrics from Scraper Metrics should be valid",
+	)
+
 	assert.NoError(t,
 		pc.checkReceiverTraces(receiver, transport, 42, 13),
 		"metrics from Receiver Traces should be valid",

obsreport/obsreporttest/testdata/prometheus_response

@@ -34,6 +34,12 @@ receiver_refused_metric_points{receiver="fakeReceiver",transport="fakeTransport"
 # HELP receiver_refused_spans Number of spans that could not be pushed into the pipeline.
 # TYPE receiver_refused_spans counter
 receiver_refused_spans{receiver="fakeReceiver",transport="fakeTransport"} 13
+# HELP scraper_scraped_metric_points Number of metric points successfully scraped.
+# TYPE scraper_scraped_metric_points counter
+scraper_scraped_metric_points{receiver="fakeReceiver",scraper="fakeScraper"} 7
+# HELP scraper_errored_metric_points Number of metric points that were unable to be scraped.
+# TYPE scraper_errored_metric_points counter
+scraper_errored_metric_points{receiver="fakeReceiver",scraper="fakeScraper"} 41
 # HELP gauge_metric A simple gauge metric
 # TYPE gauge_metric gauge
 gauge_metric 49