Add e2e tests

vendor/github.com/gophercloud/gophercloud/pagination/single.go

@@ -0,0 +1,33 @@
+package pagination
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/gophercloud/gophercloud"
+)
+
+// SinglePageBase may be embedded in a Page that contains all of the results from an operation at once.
+type SinglePageBase PageResult
+
+// NextPageURL always returns "" to indicate that there are no more pages to return.
+func (current SinglePageBase) NextPageURL() (string, error) {
+	return "", nil
+}
+
+// IsEmpty satisifies the IsEmpty method of the Page interface
+func (current SinglePageBase) IsEmpty() (bool, error) {
+	if b, ok := current.Body.([]interface{}); ok {
+		return len(b) == 0, nil
+	}
+	err := gophercloud.ErrUnexpectedType{}
+	err.Expected = "[]interface{}"
+	err.Actual = fmt.Sprintf("%v", reflect.TypeOf(current.Body))
+	return true, err
+}
+
+// GetBody returns the single page's body. This method is needed to satisfy the
+// Page interface.
+func (current SinglePageBase) GetBody() interface{} {
+	return current.Body
+}