Add init support of orgmode document type on file view and readme (#2525)

* add init support of orgmode document type on file view and readme

* fix imports

* fix imports and readmeExist

* fix imports order

* fix format

* remove unnecessary convert

modules/markup/orgmode/orgmode_test.go

@@ -0,0 +1,54 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package markup
+
+import (
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const AppURL = "http://localhost:3000/"
+const Repo = "gogits/gogs"
+const AppSubURL = AppURL + Repo + "/"
+
+func TestRender_StandardLinks(t *testing.T) {
+	setting.AppURL = AppURL
+	setting.AppSubURL = AppSubURL
+
+	test := func(input, expected string) {
+		buffer := RenderString(input, setting.AppSubURL, nil, false)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer))
+	}
+
+	googleRendered := `<p><a href="https://google.com/" title="https://google.com/">https://google.com/</a></p>`
+	test("[[https://google.com/]]", googleRendered)
+
+	lnk := markup.URLJoin(AppSubURL, "WikiPage")
+	test("[[WikiPage][WikiPage]]",
+		`<p><a href="`+lnk+`" title="WikiPage">WikiPage</a></p>`)
+}
+
+func TestRender_Images(t *testing.T) {
+	setting.AppURL = AppURL
+	setting.AppSubURL = AppSubURL
+
+	test := func(input, expected string) {
+		buffer := RenderString(input, setting.AppSubURL, nil, false)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer))
+	}
+
+	url := "../../.images/src/02/train.jpg"
+	title := "Train"
+	result := markup.URLJoin(AppSubURL, url)
+
+	test(
+		"[[file:"+url+"]["+title+"]]",
+		`<p><a href="`+result+`"><img src="`+result+`" alt="`+title+`" title="`+title+`" /></a></p>`)
+}