[test] added unit test for linked-list-reverse

Author: Dentrax

linked-list-reverse/linked-list-reverse_test.go

@@ -0,0 +1,47 @@
+// ====================================================
+// Data-Structures-with-Go Copyright(C) 2017 Furkan Türkal
+// This program comes with ABSOLUTELY NO WARRANTY; This is free software,
+// and you are welcome to redistribute it under certain conditions; See
+// file LICENSE, which is part of this source code package, for details.
+// ====================================================
+
+package main
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestLinkedListReverse(t *testing.T) {
+	var testDatas = []struct {
+		Node     *Node
+		ArrayIn  []int
+		ArrayOut []int
+	}{
+		{New(), []int{20, 4, 15, 85}, []int{-1, 20, 4, 15, 85, -1}},
+		{New(), []int{10, 20, 30, 40, 50}, []int{-1, 10, 20, 30, 40, 50, -1}},
+		{New(), []int{7}, []int{-1, 7, -1}},
+	}
+
+	for _, data := range testDatas {
+		for i := 0; i < len(data.ArrayIn); i++ {
+			Push(&data.Node, data.ArrayIn[i])
+		}
+
+		Reverse(&data.Node)
+
+		n := data.Node
+		i := 0
+		for n != nil {
+			expected := data.ArrayOut[i]
+			actual := n.data
+
+			if !reflect.DeepEqual(expected, actual) {
+				t.Errorf("LinkedListReverse: Expected: %d, Actual: %d", expected, actual)
+			}
+
+			n = n.Next()
+			i++
+		}
+	}
+}