Function TestCollectAndFormat

prometheus/testutil/testutil_test.go:437–464

(t *testing.T)

}

func TestCollectAndFormat(t *testing.T) {
	const expected = `# HELP foo_bar A value that represents the number of bars in foo.
# TYPE foo_bar counter
foo_bar{fizz="bang"} 1
`
	c := prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "foo_bar",
			Help: "A value that represents the number of bars in foo.",
		},
		[]string{"fizz"},
	)
	c.WithLabelValues("bang").Inc()

	got, err := CollectAndFormat(c, expfmt.TypeTextPlain, "foo_bar")
	if err != nil {
		t.Errorf("unexpected error: %s", err.Error())
	}

	gotS := string(got)
	if err != nil {
		t.Errorf("unexpected error: %s", err.Error())
	}

	if gotS != expected {
		t.Errorf("unexpected metric output, got %q, expected %q", gotS, expected)
	}
}