feat: support only remain slash (#605)

* support only remain slash

* fix gofmt

* move test in right place

Co-authored-by: sdghchj <sdghchj@qq.com>
Co-authored-by: Bogdan U <ubogdan@gmail.com>

operation.go

@@ -505,7 +505,7 @@ func parseMimeTypeList(mimeTypeList string, typeList *[]string, format string) e
 	return nil
 }
 
-var routerPattern = regexp.MustCompile(`^(/[\w\.\/\-{}\+:]+)[[:blank:]]+\[(\w+)]`)
+var routerPattern = regexp.MustCompile(`^(/[\w\.\/\-{}\+:]*)[[:blank:]]+\[(\w+)]`)
 
 // ParseRouterComment parses comment for gived `router` comment string.
 func (operation *Operation) ParseRouterComment(commentLine string) error {

operation_test.go

@@ -111,6 +111,15 @@ func TestParseRouterComment(t *testing.T) {
 	assert.Equal(t, "GET", operation.HTTPMethod)
 }
 
+func TestParseRouterOnlySlash(t *testing.T) {
+	comment := `// @Router / [get]`
+	operation := NewOperation()
+	err := operation.ParseComment(comment, nil)
+	assert.NoError(t, err)
+	assert.Equal(t, "/", operation.Path)
+	assert.Equal(t, "GET", operation.HTTPMethod)
+}
+
 func TestParseRouterCommentWithPlusSign(t *testing.T) {
 	comment := `/@Router /customer/get-wishlist/{proxy+} [post]`
 	operation := NewOperation()