test: add AddPrefix test.

middlewares/addPrefix_test.go

@@ -0,0 +1,29 @@
+package middlewares
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/containous/traefik/testhelpers"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAddPrefix(t *testing.T) {
+
+	path := "/bar"
+	prefix := "/foo"
+
+	var expectedPath string
+	handler := &AddPrefix{
+		Prefix: prefix,
+		Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			expectedPath = r.URL.Path
+		}),
+	}
+
+	req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost"+path, nil)
+
+	handler.ServeHTTP(nil, req)
+
+	assert.Equal(t, expectedPath, "/foo/bar", "Unexpected path.")
+}