add builder test

Author: senghoo

06_builder/builder_test.go

@@ -0,0 +1,66 @@
+package builder
+
+import (
+	"strconv"
+	"testing"
+)
+
+type Builder1 struct {
+	result string
+}
+
+func (b *Builder1) Part1() {
+	b.result += "1"
+}
+
+func (b *Builder1) Part2() {
+	b.result += "2"
+}
+
+func (b *Builder1) Part3() {
+	b.result += "3"
+}
+
+func (b *Builder1) GetResult() string {
+	return b.result
+}
+
+func TestBuilder1(t *testing.T) {
+	builder := &Builder1{}
+	director := NewDirector(builder)
+	director.Construct()
+	res := builder.GetResult()
+	if res != "123" {
+		t.Fatalf("Builder1 fail expect 123 acture %s", res)
+	}
+}
+
+type Builder2 struct {
+	result int
+}
+
+func (b *Builder2) Part1() {
+	b.result += 1
+}
+
+func (b *Builder2) Part2() {
+	b.result += 2
+}
+
+func (b *Builder2) Part3() {
+	b.result += 3
+}
+
+func (b *Builder2) GetResult() string {
+	return strconv.Itoa(b.result)
+}
+
+func TestBuilder2(t *testing.T) {
+	builder := &Builder2{}
+	director := NewDirector(builder)
+	director.Construct()
+	res := builder.GetResult()
+	if res != "6" {
+		t.Fatalf("Builder2 fail expect 6 acture %s", res)
+	}
+}