git: migrate to github.com/gogs/git-module@v1.0.0 (#5958)

* WIP

* Finish `internal/db/git_diff.go`

* FInish internal/db/mirror.go

* Finish internal/db/pull.go

* Finish internal/db/release.go

* Finish internal/db/repo.go

* Finish internal/db/repo_branch.go

* Finish internal/db/repo_editor.go

* Finish internal/db/update.go

* Save my work

* Add license header

* Compile!

* Merge master

* Finish internal/cmd/hook.go

* Finish internal/conf/static.go

* Finish internal/context/repo.go

* Finish internal/db/action.go

* Finish internal/db/git_diff.go

* Fix submodule URL inferring

* Finish internal/db/mirror.go

* Updat to beta.4

* css: update fonts

* Finish internal/db/pull.go

* Finish internal/db/release.go

* Finish internal/db/repo_branch.go

* Finish internal/db/wiki.go

* gitutil: enhance infer submodule UR

* Finish internal/route/api/v1/repo/commits.go

* mirror: only collect branch commits after sync

* mirror: fix tag support

* Finish internal/db/repo.go

* Finish internal/db/repo_editor.go

* Finish internal/db/update.go

* Finish internal/gitutil/pull_request.go

* Make it compile

* Finish internal/route/repo/setting.go

* Finish internal/route/repo/branch.go

* Finish internal/route/api/v1/repo/file.go

* Finish internal/route/repo/download.go

* Finish internal/route/repo/editor.go

* Use helper

* Finish internal/route/repo/issue.go

* Finish internal/route/repo/pull.go

* Finish internal/route/repo/release.go

* Finish internal/route/repo/repo.go

* Finish internal/route/repo/wiki.go

* Finish internal/route/repo/commit.go

* Finish internal/route/repo/view.go

* Finish internal/gitutil/tag.go

* go.sum

internal/gitutil/diff_test.go

@@ -0,0 +1,49 @@
+// Copyright 2016 The Gogs 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 gitutil
+
+import (
+	"html/template"
+	"testing"
+
+	dmp "github.com/sergi/go-diff/diffmatchpatch"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/gogs/git-module"
+)
+
+func Test_diffsToHTML(t *testing.T) {
+	tests := []struct {
+		diffs    []dmp.Diff
+		lineType git.DiffLineType
+		expHTML  template.HTML
+	}{
+		{
+			diffs: []dmp.Diff{
+				{Type: dmp.DiffEqual, Text: "foo "},
+				{Type: dmp.DiffInsert, Text: "bar"},
+				{Type: dmp.DiffDelete, Text: " baz"},
+				{Type: dmp.DiffEqual, Text: " biz"},
+			},
+			lineType: git.DiffLineAdd,
+			expHTML:  template.HTML(`+ foo <span class="added-code">bar</span> biz`),
+		},
+		{
+			diffs: []dmp.Diff{
+				{Type: dmp.DiffEqual, Text: "foo "},
+				{Type: dmp.DiffDelete, Text: "bar"},
+				{Type: dmp.DiffInsert, Text: " baz"},
+				{Type: dmp.DiffEqual, Text: " biz"},
+			},
+			lineType: git.DiffLineDelete,
+			expHTML:  template.HTML(`- foo <span class="removed-code">bar</span> biz`),
+		},
+	}
+	for _, test := range tests {
+		t.Run("", func(t *testing.T) {
+			assert.Equal(t, test.expHTML, diffsToHTML(test.diffs, test.lineType))
+		})
+	}
+}