SEBA-704 implement sorting

Change-Id: Ic790b01b36d6bad9f79e064bc04f77a22ddfd396
diff --git a/order/order_test.go b/order/order_test.go
new file mode 100644
index 0000000..b136824
--- /dev/null
+++ b/order/order_test.go
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019-present Ciena Corporation
+ *
+ * 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 order
+
+import (
+	"fmt"
+	"testing"
+)
+
+type SortTestStruct struct {
+	One   string
+	Two   string
+	Three uint64
+}
+
+var testList = []SortTestStruct{
+	{
+		One:   "a",
+		Two:   "x",
+		Three: 10,
+	},
+	{
+		One:   "a",
+		Two:   "c",
+		Three: 1,
+	},
+	{
+		One:   "a",
+		Two:   "b",
+		Three: 2,
+	},
+	{
+		One:   "a",
+		Two:   "a",
+		Three: 3,
+	},
+	{
+		One:   "b",
+		Two:   "a",
+		Three: 3,
+	},
+}
+
+func TestSort(t *testing.T) {
+	s, err := Parse("+One,-Two")
+	if err != nil {
+		t.Errorf("Unable to parse sort specification")
+	}
+	//fmt.Printf("%#v\n", s)
+	o, err := s.Process(testList)
+	if err != nil {
+		t.Errorf("Sort failed: %s", err.Error())
+	}
+
+	fmt.Printf("END: %#v\n", o)
+}
+
+func TestSortInt(t *testing.T) {
+	s, err := Parse("Three,One")
+	if err != nil {
+		t.Errorf("Unable to parse sort specification")
+	}
+	//fmt.Printf("%#v\n", s)
+	o, err := s.Process(testList)
+	if err != nil {
+		t.Errorf("Sort failed: %s", err.Error())
+	}
+
+	fmt.Printf("END: %#v\n", o)
+}