test(zfspv): minikube setup for travis

to run integration test cases

Signed-off-by: Pawan <pawan@mayadata.io>

tests/sc/buildlist.go

@@ -0,0 +1,102 @@
+/*
+Copyright 2019 The OpenEBS Authors
+
+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 sc
+
+import (
+	"github.com/openebs/zfs-localpv/pkg/common/errors"
+	storagev1 "k8s.io/api/storage/v1"
+)
+
+// ListBuilder enables building an instance of StorageClassList
+type ListBuilder struct {
+	list    *StorageClassList
+	filters predicateList
+	errs    []error
+}
+
+// NewListBuilder returns a instance of ListBuilder
+func NewListBuilder() *ListBuilder {
+	return &ListBuilder{list: &StorageClassList{items: []*StorageClass{}}}
+}
+
+// ListBuilderForAPIList builds the ListBuilder object based on SC API list
+func ListBuilderForAPIList(scl *storagev1.StorageClassList) *ListBuilder {
+	b := &ListBuilder{list: &StorageClassList{}}
+	if scl == nil {
+		b.errs = append(b.errs, errors.New("failed to build storageclass list: missing api list"))
+		return b
+	}
+	for _, sc := range scl.Items {
+		sc := sc
+		b.list.items = append(b.list.items, &StorageClass{object: &sc})
+	}
+	return b
+}
+
+// ListBuilderForObjects returns a instance of ListBuilder from SC instances
+func ListBuilderForObjects(scl *StorageClassList) *ListBuilder {
+	b := &ListBuilder{list: &StorageClassList{}}
+	if scl == nil {
+		b.errs = append(b.errs, errors.New("failed to build storageclass list: missing object list"))
+		return b
+	}
+	b.list = scl
+	return b
+}
+
+// List returns the list of StorageClass instances that was built by this builder
+func (b *ListBuilder) List() (*StorageClassList, error) {
+	if len(b.errs) > 0 {
+		return nil, errors.Errorf("failed to list storageclass: %+v", b.errs)
+	}
+	if b.filters == nil || len(b.filters) == 0 {
+		return b.list, nil
+	}
+	filtered := &StorageClassList{}
+	for _, sc := range b.list.items {
+		if b.filters.all(sc) {
+			sc := sc // Pin it
+			filtered.items = append(filtered.items, sc)
+		}
+	}
+	return filtered, nil
+}
+
+// WithFilter add filters on which the StorageClass has to be filtered
+func (b *ListBuilder) WithFilter(pred ...Predicate) *ListBuilder {
+	b.filters = append(b.filters, pred...)
+	return b
+}
+
+// APIList builds core API PVC list using listbuilder
+func (b *ListBuilder) APIList() (*storagev1.StorageClassList, error) {
+	l, err := b.List()
+	if err != nil {
+		return nil, err
+	}
+	return l.ToAPIList(), nil
+}
+
+// Len returns the number of items present
+// in the PVCList of a builder
+func (b *ListBuilder) Len() (int, error) {
+	l, err := b.List()
+	if err != nil {
+		return 0, err
+	}
+	return l.Len(), nil
+}