/*
Copyright 2019 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package store

import (
	"testing"

	v1 "k8s.io/api/core/v1"
	storagev1 "k8s.io/api/storage/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	generator "k8s.io/kube-state-metrics/v2/pkg/metric_generator"
)

func TestStorageClassStore(t *testing.T) {
	startTime := 1501569018
	metav1StartTime := metav1.Unix(int64(startTime), 0)
	reclaimPolicy := v1.PersistentVolumeReclaimDelete
	volumeBindingMode := storagev1.VolumeBindingImmediate

	cases := []generateMetricsTestCase{
		{
			Obj: &storagev1.StorageClass{
				ObjectMeta: metav1.ObjectMeta{
					Name: "test_storageclass-info",
				},
				Provisioner:       "kubernetes.io/rbd",
				ReclaimPolicy:     &reclaimPolicy,
				VolumeBindingMode: &volumeBindingMode,
			},
			Want: `
					# HELP kube_storageclass_info [STABLE] Information about storageclass.
					# TYPE kube_storageclass_info gauge
					kube_storageclass_info{storageclass="test_storageclass-info",provisioner="kubernetes.io/rbd",reclaim_policy="Delete",volume_binding_mode="Immediate"} 1
				`,
			MetricNames: []string{
				"kube_storageclass_info",
			},
		},
		{
			Obj: &storagev1.StorageClass{
				ObjectMeta: metav1.ObjectMeta{
					Name: "test_storageclass-default-info",
				},
				Provisioner:       "kubernetes.io/rbd",
				ReclaimPolicy:     nil,
				VolumeBindingMode: nil,
			},
			Want: `
					# HELP kube_storageclass_info [STABLE] Information about storageclass.
					# TYPE kube_storageclass_info gauge
					kube_storageclass_info{storageclass="test_storageclass-default-info",provisioner="kubernetes.io/rbd",reclaim_policy="Delete",volume_binding_mode="Immediate"} 1
				`,
			MetricNames: []string{
				"kube_storageclass_info",
			},
		},
		{
			Obj: &storagev1.StorageClass{
				ObjectMeta: metav1.ObjectMeta{
					Name:              "test_kube_storageclass-created",
					CreationTimestamp: metav1StartTime,
				},
				Provisioner:       "kubernetes.io/rbd",
				ReclaimPolicy:     &reclaimPolicy,
				VolumeBindingMode: &volumeBindingMode,
			},
			Want: `
					# HELP kube_storageclass_created [STABLE] Unix creation timestamp
					# TYPE kube_storageclass_created gauge
					kube_storageclass_created{storageclass="test_kube_storageclass-created"} 1.501569018e+09
				`,
			MetricNames: []string{
				"kube_storageclass_created",
			},
		},
		{
			Obj: &storagev1.StorageClass{
				ObjectMeta: metav1.ObjectMeta{
					Name: "test_storageclass-labels",
					Labels: map[string]string{
						"foo": "bar",
					},
				},
				Provisioner:       "kubernetes.io/rbd",
				ReclaimPolicy:     &reclaimPolicy,
				VolumeBindingMode: &volumeBindingMode,
			},
			Want: `
					# HELP kube_storageclass_labels [STABLE] Kubernetes labels converted to Prometheus labels.
					# TYPE kube_storageclass_labels gauge
				`,
			MetricNames: []string{
				"kube_storageclass_labels",
			},
		},
	}
	for i, c := range cases {
		c.Func = generator.ComposeMetricGenFuncs(storageClassMetricFamilies(nil, nil))
		c.Headers = generator.ExtractMetricFamilyHeaders(storageClassMetricFamilies(nil, nil))
		if err := c.run(); err != nil {
			t.Errorf("unexpected collecting result in %vth run:\n%s", i, err)
		}
	}
}