[test] added unit test for quick-sort

quick-sort/quick-sort_test.go

@@ -0,0 +1,34 @@
+// ====================================================
+// 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 TestQuickSort(t *testing.T) {
+	var testDatas = []struct {
+		ArrayIn  []int
+		ArrayOut []int
+	}{
+		{[]int{1, 3, 2, 4}, []int{1, 2, 3, 4}},
+		{[]int{3, 2, 1, 4}, []int{1, 2, 3, 4}},
+		{[]int{9, 8, 6, 5, 7, 4, 3, 0, 2, 1}, []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}},
+		{[]int{-3, -2, -1, -4, 0}, []int{-4, -3, -2, -1, 0}},
+	}
+	for _, data := range testDatas {
+		expected := data.ArrayOut
+		QuickSort(data.ArrayIn, 0, len(data.ArrayIn)-1)
+		actual := data.ArrayIn
+
+		if !reflect.DeepEqual(expected, actual) {
+			t.Errorf("QuickSort: Expected: %d, Actual: %d", expected, actual)
+		}
+	}
+}