add testing and fix path.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

multitemplate.go

@@ -2,6 +2,7 @@ package multitemplate
 
 import (
 	"html/template"
+	"path/filepath"
 
 	"github.com/gin-gonic/gin/render"
 )

multitemplate_test.go

@@ -0,0 +1,38 @@
+package multitemplate
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/gin-gonic/gin.v1"
+)
+
+func performRequest(r http.Handler, method, path string) *httptest.ResponseRecorder {
+	req, _ := http.NewRequest(method, path, nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+	return w
+}
+
+func createMyRender() Render {
+	r := New()
+	r.AddFromFiles("index", "tests/base.html", "tests/base.html")
+
+	return r
+}
+
+func TestAddFromFiles(t *testing.T) {
+	router := gin.New()
+	router.HTMLRender = createMyRender()
+	router.GET("/", func(c *gin.Context) {
+		c.HTML(200, "index", gin.H{
+			"title": "Test Multiple Template",
+		})
+	})
+
+	w := performRequest(router, "GET", "/")
+	assert.Equal(t, 200, w.Code)
+	assert.Equal(t, "<p>Test Multiple Template</p>\n", w.Body.String())
+}

tests/base.html

@@ -0,0 +1 @@
+<p>{{ .title }}</p>