Function TestAlreadyRegistered

prometheus/registry_test.go:756–873

(t *testing.T)

}

func TestAlreadyRegistered(t *testing.T) {
	original := prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name:        "test",
			Help:        "help",
			ConstLabels: prometheus.Labels{"const": "label"},
		},
		[]string{"foo", "bar"},
	)
	equalButNotSame := prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name:        "test",
			Help:        "help",
			ConstLabels: prometheus.Labels{"const": "label"},
		},
		[]string{"foo", "bar"},
	)
	originalWithoutConstLabel := prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "test",
			Help: "help",
		},
		[]string{"foo", "bar"},
	)
	equalButNotSameWithoutConstLabel := prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "test",
			Help: "help",
		},
		[]string{"foo", "bar"},
	)

	scenarios := []struct {
		name              string
		originalCollector prometheus.Collector
		registerWith      func(prometheus.Registerer) prometheus.Registerer
		newCollector      prometheus.Collector
		reRegisterWith    func(prometheus.Registerer) prometheus.Registerer
	}{
		{
			"RegisterNormallyReregisterNormally",
			original,
			func(r prometheus.Registerer) prometheus.Registerer { return r },
			equalButNotSame,
			func(r prometheus.Registerer) prometheus.Registerer { return r },
		},
		{
			"RegisterNormallyReregisterWrapped",
			original,
			func(r prometheus.Registerer) prometheus.Registerer { return r },
			equalButNotSameWithoutConstLabel,
			func(r prometheus.Registerer) prometheus.Registerer {
				return prometheus.WrapRegistererWith(prometheus.Labels{"const": "label"}, r)
			},
		},
		{
			"RegisterWrappedReregisterWrapped",
			originalWithoutConstLabel,