test(zfspv): minikube setup for travis

to run integration test cases

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

tests/stringer/stringer.go

@@ -0,0 +1,63 @@
+/*
+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 stringer
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/ghodss/yaml"
+)
+
+// Yaml returns the provided object
+// as a yaml formatted string
+func Yaml(ctx string, obj interface{}) string {
+	if obj == nil {
+		return fmt.Sprintf("\n%s {nil}", ctx)
+	}
+
+	str, ok := obj.(string)
+	if ok {
+		return fmt.Sprintf("\n%s {%s}", ctx, str)
+	}
+
+	b, err := yaml.Marshal(obj)
+	if err != nil {
+		return fmt.Sprintf("\n%s {nil}", ctx)
+	}
+
+	return fmt.Sprintf("\n%s {%s}", ctx, string(b))
+}
+
+// JSONIndent returns the provided object
+// as a json indent string
+func JSONIndent(ctx string, obj interface{}) string {
+	if obj == nil {
+		return fmt.Sprintf("\n%s {nil}", ctx)
+	}
+
+	str, ok := obj.(string)
+	if ok {
+		return fmt.Sprintf("\n%s {%s}", ctx, str)
+	}
+
+	b, err := json.MarshalIndent(obj, "", ".")
+	if err != nil {
+		return fmt.Sprintf("\n%s {nil}", ctx)
+	}
+
+	return fmt.Sprintf("\n%s %s", ctx, string(b))
+}