Do not allow commiting to protected branch from online editor (#1502)

* Do not allow commiting to protected branch from online editor

* Add editor integration tests for adding new file and not allowing to add new file to protected branch

integrations/editor_test.go

@@ -0,0 +1,106 @@
+// 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 integrations
+
+import (
+	"bytes"
+	"net/http"
+	"net/url"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCreateFile(t *testing.T) {
+	prepareTestEnv(t)
+
+	session := loginUser(t, "user2", "password")
+
+	// Request editor page
+	req, err := http.NewRequest("GET", "/user2/repo1/_new/master/", nil)
+	assert.NoError(t, err)
+	resp := session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+
+	doc, err := NewHtmlParser(resp.Body)
+	assert.NoError(t, err)
+	lastCommit := doc.GetInputValueByName("last_commit")
+	assert.NotEmpty(t, lastCommit)
+
+	// Save new file to master branch
+	req, err = http.NewRequest("POST", "/user2/repo1/_new/master/",
+		bytes.NewBufferString(url.Values{
+			"_csrf":         []string{doc.GetInputValueByName("_csrf")},
+			"last_commit":   []string{lastCommit},
+			"tree_path":     []string{"test.txt"},
+			"content":       []string{"Content"},
+			"commit_choice": []string{"direct"},
+		}.Encode()),
+	)
+	assert.NoError(t, err)
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	resp = session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusFound, resp.HeaderCode)
+}
+
+func TestCreateFileOnProtectedBranch(t *testing.T) {
+	prepareTestEnv(t)
+
+	session := loginUser(t, "user2", "password")
+
+	// Open repository branch settings
+	req, err := http.NewRequest("GET", "/user2/repo1/settings/branches", nil)
+	assert.NoError(t, err)
+	resp := session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+
+	doc, err := NewHtmlParser(resp.Body)
+	assert.NoError(t, err)
+
+	// Change master branch to protected
+	req, err = http.NewRequest("POST", "/user2/repo1/settings/branches?action=protected_branch",
+		bytes.NewBufferString(url.Values{
+			"_csrf":      []string{doc.GetInputValueByName("_csrf")},
+			"branchName": []string{"master"},
+			"canPush":    []string{"true"},
+		}.Encode()),
+	)
+	assert.NoError(t, err)
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	resp = session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+	// Check if master branch has been locked successfully
+	flashCookie := session.GetCookie("macaron_flash")
+	assert.NotNil(t, flashCookie)
+	assert.EqualValues(t, flashCookie.Value, "success%3Dmaster%2BLocked%2Bsuccessfully")
+
+	// Request editor page
+	req, err = http.NewRequest("GET", "/user2/repo1/_new/master/", nil)
+	assert.NoError(t, err)
+	resp = session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+
+	doc, err = NewHtmlParser(resp.Body)
+	assert.NoError(t, err)
+	lastCommit := doc.GetInputValueByName("last_commit")
+	assert.NotEmpty(t, lastCommit)
+
+	// Save new file to master branch
+	req, err = http.NewRequest("POST", "/user2/repo1/_new/master/",
+		bytes.NewBufferString(url.Values{
+			"_csrf":         []string{doc.GetInputValueByName("_csrf")},
+			"last_commit":   []string{lastCommit},
+			"tree_path":     []string{"test.txt"},
+			"content":       []string{"Content"},
+			"commit_choice": []string{"direct"},
+		}.Encode()),
+	)
+	assert.NoError(t, err)
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	resp = session.MakeRequest(t, req)
+	assert.EqualValues(t, http.StatusOK, resp.HeaderCode)
+	// Check body for error message
+	assert.Contains(t, string(resp.Body), "Can not commit to protected branch 'master'.")
+}