[test] added unit test for array-rotation

Author: Dentrax

array-rotation/array-rotation_test.go

@@ -0,0 +1,37 @@
+// ====================================================
+// 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 TestLeftRotate(t *testing.T) {
+	var testDatas = []struct {
+		ArrayIn  []int
+		Count    int
+		Depth    int
+		ArrayOut []int
+	}{
+		{[]int{1, 2, 3, 4, 5, 6, 7}, 2, 7, []int{3, 4, 5, 6, 7, 1, 2}},
+		{[]int{1, 2, 3, 4, 5, 6, 7}, 2, 6, []int{3, 4, 5, 6, 1, 2, 7}},
+		{[]int{1, 2, 3, 4, 5, 6, 7}, 1, 2, []int{2, 1, 3, 4, 5, 6, 7}},
+		{[]int{1, 2, 3, 4, 5, 6, 7}, 7, 7, []int{1, 2, 3, 4, 5, 6, 7}},
+		{[]int{1, 2, 3, 4, 5, 6, 7}, 7, 6, []int{2, 3, 4, 5, 6, 1, 7}},
+	}
+	for _, data := range testDatas {
+		expected := data.ArrayOut
+		leftRotate(data.ArrayIn, data.Count, data.Depth)
+		actual := data.ArrayIn
+
+		if !reflect.DeepEqual(expected, actual) {
+			t.Errorf("LeftRotate: Expected: %d, Actual: %d", expected, actual)
+		}
+	}
+}