diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..a759715
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,5 @@
+# 管理checkout的eol
+# 確保test的文本內容，不會因為eol的問題導致不相等
+* text eol=lf
+# *.html text eol=lf
+*.exe binary
diff --git a/v2/main_test.go b/v2/main_test.go
new file mode 100644
index 0000000..10f7974
--- /dev/null
+++ b/v2/main_test.go
@@ -0,0 +1,45 @@
+package highlighting_test
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	highlighting "github.com/CarsonSlovoka/goldmark-highlighting/v2"
+	"github.com/yuin/goldmark"
+	"log"
+	"os"
+	"strings"
+	"testing"
+)
+
+func startTest(markdown goldmark.Markdown, testDir string) error {
+	content, err := os.ReadFile(fmt.Sprintf("testData/%s/input.md", testDir))
+	if err != nil {
+		return err
+	}
+	got := bytes.NewBuffer(make([]byte, 0))
+	if err = markdown.Convert(content, got); err != nil {
+		return err
+	}
+	want, err := os.ReadFile(fmt.Sprintf("testData/%s/expected.html", testDir))
+	if err != nil {
+		return err
+	}
+	if got.String() != strings.TrimRight(string(want), "\n") { // 移除結尾多出的空行，避免editorconfig中的insert_final_newline與其衝突
+		log.Printf("[error]\ngot:\n%s\nwant:\n%s", got, want)
+		return errors.New("got != want")
+	}
+	return nil
+}
+
+func Test_NewHighlightingExtender(t *testing.T) {
+	markdown := goldmark.New(
+		goldmark.WithExtensions(
+			highlighting.NewHighlightingExtender(),
+		),
+	)
+
+	if err := startTest(markdown, "basic"); err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/v2/testData/basic/expected.html b/v2/testData/basic/expected.html
new file mode 100644
index 0000000..6434aa6
--- /dev/null
+++ b/v2/testData/basic/expected.html
@@ -0,0 +1,21 @@
+<h2>Demo</h2>
+<pre>
+<code>package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello World")
+}
+</code>
+</pre>
+<div class="highlight Go">
+<pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><code><span style="display:flex;"><span><span style="color:#f92672">package</span> <span style="color:#a6e22e">main</span>
+</span></span><span style="display:flex;"><span>
+</span></span><span style="display:flex;"><span><span style="color:#f92672">import</span> <span style="color:#e6db74">&#34;fmt&#34;</span>
+</span></span><span style="display:flex;"><span>
+</span></span><span style="display:flex;"><span><span style="color:#66d9ef">func</span> <span style="color:#a6e22e">main</span>() {
+</span></span><span style="display:flex;"><span>	<span style="color:#a6e22e">fmt</span>.<span style="color:#a6e22e">Println</span>(<span style="color:#e6db74">&#34;Hello World&#34;</span>)
+</span></span><span style="display:flex;"><span>}
+</span></span></code></pre>
+</div>
diff --git a/v2/testData/basic/input.md b/v2/testData/basic/input.md
new file mode 100644
index 0000000..dd8c135
--- /dev/null
+++ b/v2/testData/basic/input.md
@@ -0,0 +1,21 @@
+## Demo
+
+```
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello World")
+}
+```
+
+```go
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello World")
+}
+```