Function TestHelpStringFix

storage/diskmetricstore_test.go:1473–1536

(t *testing.T)

}

func TestHelpStringFix(t *testing.T) {
	dms := NewDiskMetricStore("", 100*time.Millisecond, prometheus.DefaultGatherer, logger)

	ts1 := time.Now()
	errCh := make(chan error, 1)
	dms.SubmitWriteRequest(WriteRequest{
		Labels: map[string]string{
			"job": "job1",
		},
		Timestamp: ts1,
		MetricFamilies: map[string]*dto.MetricFamily{
			"go_goroutines": mfgg,
			"mf_help":       mfh1,
		},
	})
	dms.SubmitWriteRequest(WriteRequest{
		Labels: map[string]string{
			"job": "job2",
		},
		Timestamp: ts1,
		MetricFamilies: map[string]*dto.MetricFamily{
			"mf_help": mfh2,
		},
		Done: errCh,
	})
	for err := range errCh {
		t.Fatal("Unexpected error:", err)
	}

	// Either we have settled on the mfh1 help string or the mfh2 help string.
	gotMFs := dms.GetMetricFamilies()
	if len(gotMFs) != 4 {
		t.Fatalf("expected 4 metric families, got %d", len(gotMFs))
	}
	gotMFsAsStrings := make([]string, len(gotMFs))
	for i, mf := range gotMFs {
		sort.Sort(metricSorter(mf.GetMetric()))
		gotMFsAsStrings[i] = mf.String()
	}
	sort.Strings(gotMFsAsStrings)
	gotGG := gotMFsAsStrings[0]
	got12 := gotMFsAsStrings[1]
	expectedGG := mfggFixed.String()
	expected12 := mfh12.String()
	expected21 := mfh21.String()

	if gotGG != expectedGG {
		t.Errorf(
			"help strings weren't properly adjusted, got '%s', expected '%s'",
			gotGG, expectedGG,
		)
	}
	if got12 != expected12 && got12 != expected21 {
		t.Errorf(
			"help strings weren't properly adjusted, got '%s' which is neither '%s' nor '%s'",
			got12, expected12, expected21,
		)
	}