[test] added unit test for stack-1-introduction

stack-1-introduction/stack-1-introduction_test.go

@@ -0,0 +1,40 @@
+// ====================================================
+// 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 TestStack(t *testing.T) {
+	var testDatas = []struct {
+		Stack    *Stack
+		ArrayIn  []int
+		ArrayOut []int
+	}{
+		{New(3), []int{10, 20, 30}, []int{30, 20, 10}},
+		{New(5), []int{10, 20, 30, 40, 50}, []int{50, 40, 30, 20, 10}},
+		{New(1), []int{7}, []int{7}},
+		{New(5), []int{15, 10, 22, 33, 77}, []int{77, 33, 22, 10, 15}},
+	}
+
+	for _, data := range testDatas {
+		for i := uint(0); i < data.Stack.capacity; i++ {
+			Push(data.Stack, data.ArrayIn[i])
+		}
+		for i := uint(0); i < data.Stack.capacity; i++ {
+			expected := data.ArrayOut[i]
+			actual := Pop(data.Stack)
+
+			if !reflect.DeepEqual(expected, actual) {
+				t.Errorf("Stack: Expected: %d, Actual: %d", expected, actual)
+			}
+		}
+	}
+}