Function checkLinesAreEqual

prometheus/graphite/bridge_test.go:298–337

(w, g string, useTags bool)

}

func checkLinesAreEqual(w, g string, useTags bool) error {
	if useTags {
		taggedLineRegexp := regexp.MustCompile(`;| `)

		wantLines, err := stringToLines(w)
		if err != nil {
			return err
		}

		gotLines, err := stringToLines(g)
		if err != nil {
			return err
		}

		for lineInd := range gotLines {
			var log string
			// Tagged metric, order of tags doesn't matter
			// m1 := "prefix.name;tag1=val1;tag2=val2 3 1477043"
			// m2 := "prefix.name;tag2=val2;tag1=val1 3 1477043"
			// m1 should be equal to m2
			wantSplit := taggedLineRegexp.Split(wantLines[lineInd], -1)
			gotSplit := taggedLineRegexp.Split(gotLines[lineInd], -1)
			sort.Strings(wantSplit)
			sort.Strings(gotSplit)

			log += fmt.Sprintf("want: %v\ngot: %v\n\n", wantSplit, gotSplit)

			if !reflect.DeepEqual(wantSplit, gotSplit) {
				return errors.New(log)
			}
		}
		return nil
	}

	if w != g {
		return fmt.Errorf("wanted:\n\n%s\ngot:\n\n%s", w, g)
	}

	return nil
}

func stringToLines(s string) (lines []string, err error) {
	scanner := bufio.NewScanner(strings.NewReader(s))