test(zfspv): minikube setup for travis

to run integration test cases

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

tests/pvc/buildlist.go

@@ -0,0 +1,165 @@
+/*
+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 pvc
+
+import (
+	"github.com/openebs/zfs-localpv/pkg/common/errors"
+	corev1 "k8s.io/api/core/v1"
+)
+
+// ListBuilder enables building an instance of
+// PVCList
+type ListBuilder struct {
+	// template to build a list of pvcs
+	template *corev1.PersistentVolumeClaim
+
+	// count determines the number of
+	// pvcs to be built using the provided
+	// template
+	count int
+
+	list    *PVCList
+	filters PredicateList
+	errs    []error
+}
+
+// NewListBuilder returns an instance of ListBuilder
+func NewListBuilder() *ListBuilder {
+	return &ListBuilder{list: &PVCList{}}
+}
+
+// ListBuilderFromTemplate returns a new instance of
+// ListBuilder based on the provided pvc template
+func ListBuilderFromTemplate(pvc *corev1.PersistentVolumeClaim) *ListBuilder {
+	b := NewListBuilder()
+	if pvc == nil {
+		b.errs = append(
+			b.errs,
+			errors.New("failed to build pvc list: nil pvc template"),
+		)
+		return b
+	}
+
+	b.template = pvc
+	b.count = 1
+	return b
+}
+
+// ListBuilderForAPIObjects returns a new instance of
+// ListBuilder based on provided api pvc list
+func ListBuilderForAPIObjects(pvcs *corev1.PersistentVolumeClaimList) *ListBuilder {
+	b := &ListBuilder{list: &PVCList{}}
+
+	if pvcs == nil {
+		b.errs = append(
+			b.errs,
+			errors.New("failed to build pvc list: missing api list"),
+		)
+		return b
+	}
+
+	for _, pvc := range pvcs.Items {
+		pvc := pvc
+		b.list.items = append(b.list.items, &PVC{object: &pvc})
+	}
+
+	return b
+}
+
+// ListBuilderForObjects returns a new instance of
+// ListBuilder based on provided pvc list
+func ListBuilderForObjects(pvcs *PVCList) *ListBuilder {
+	b := &ListBuilder{}
+	if pvcs == nil {
+		b.errs = append(
+			b.errs,
+			errors.New("failed to build pvc list: missing object list"),
+		)
+		return b
+	}
+
+	b.list = pvcs
+	return b
+}
+
+// WithFilter adds filters on which the pvcs
+// are filtered
+func (b *ListBuilder) WithFilter(pred ...Predicate) *ListBuilder {
+	b.filters = append(b.filters, pred...)
+	return b
+}
+
+// WithCount sets the count that determines
+// the number of pvcs to be built
+func (b *ListBuilder) WithCount(count int) *ListBuilder {
+	b.count = count
+	return b
+}
+
+func (b *ListBuilder) buildFromTemplateIfNilList() {
+	if len(b.list.items) != 0 || b.template == nil {
+		return
+	}
+
+	for i := 0; i < b.count; i++ {
+		b.list.items = append(b.list.items, &PVC{object: b.template})
+	}
+}
+
+// List returns the list of pvc instances
+// that was built by this builder
+func (b *ListBuilder) List() (*PVCList, error) {
+	if len(b.errs) > 0 {
+		return nil, errors.Errorf("failed to build pvc list: %+v", b.errs)
+	}
+
+	b.buildFromTemplateIfNilList()
+
+	if b.filters == nil || len(b.filters) == 0 {
+		return b.list, nil
+	}
+
+	filteredList := &PVCList{}
+	for _, pvc := range b.list.items {
+		if b.filters.all(pvc) {
+			filteredList.items = append(filteredList.items, pvc)
+		}
+	}
+
+	return filteredList, 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
+}
+
+// APIList builds core API PVC list using listbuilder
+func (b *ListBuilder) APIList() (*corev1.PersistentVolumeClaimList, error) {
+	l, err := b.List()
+	if err != nil {
+		return nil, err
+	}
+
+	return l.ToAPIList(), nil
+}