test(zfspv): minikube setup for travis

to run integration test cases

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

tests/k8svolume/volume.go

@@ -0,0 +1,71 @@
+// 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 k8svolume
+
+import (
+	corev1 "k8s.io/api/core/v1"
+)
+
+// Volume is a wrapper over named volume api object, used
+// within Pods. It provides build, validations and other common
+// logic to be used by various feature specific callers.
+type Volume struct {
+	object *corev1.Volume
+}
+
+type volumeBuildOption func(*Volume)
+
+// NewForAPIObject returns a new instance of Volume
+func NewForAPIObject(obj *corev1.Volume, opts ...volumeBuildOption) *Volume {
+	v := &Volume{object: obj}
+	for _, o := range opts {
+		o(v)
+	}
+	return v
+}
+
+// Predicate defines an abstraction
+// to determine conditional checks
+// against the provided volume instance
+type Predicate func(*Volume) bool
+
+// IsNil returns true if the Volume instance
+// is nil
+func (v *Volume) IsNil() bool {
+	return v.object == nil
+}
+
+// IsNil is predicate to filter out nil Volume
+// instances
+func IsNil() Predicate {
+	return func(v *Volume) bool {
+		return v.IsNil()
+	}
+}
+
+// PredicateList holds a list of predicate
+type PredicateList []Predicate
+
+// all returns true if all the predicates
+// succeed against the provided pvc
+// instance
+func (l PredicateList) all(v *Volume) bool {
+	for _, pred := range l {
+		if !pred(v) {
+			return false
+		}
+	}
+	return true
+}