tests: Lift out CreateDeclarativeRepo()

There are a number of tests which require creating a repository on the
fly, and they each do it their own way. To reduce code duplication, lift
out this common pattern into a helper called `CreateDeclarativeRepo()`,
which lets us create a repository, set up enabled and disabled repo
units, and even add, delete, or update files.

Also convert a number of users of this pattern to the new helper - those
users that I introduced, and are in code introduced by Forgejo in the
first place.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>

tests/integration/integration_test.go

@@ -1,4 +1,5 @@
 // Copyright 2017 The Gitea Authors. All rights reserved.
+// Copyright 2024 The Forgejo Authors c/o Codeberg e.V.. All rights reserved.
 // SPDX-License-Identifier: MIT
 
 //nolint:forbidigo
@@ -25,9 +26,12 @@ import (
 
 	"code.gitea.io/gitea/models/auth"
 	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	unit_model "code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 	gitea_context "code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/graceful"
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/log"
@@ -36,10 +40,13 @@ import (
 	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers"
+	repo_service "code.gitea.io/gitea/services/repository"
+	files_service "code.gitea.io/gitea/services/repository/files"
 	user_service "code.gitea.io/gitea/services/user"
 	"code.gitea.io/gitea/tests"
 
 	"github.com/PuerkitoBio/goquery"
+	gouuid "github.com/google/uuid"
 	"github.com/markbates/goth"
 	"github.com/markbates/goth/gothic"
 	goth_gitlab "github.com/markbates/goth/providers/gitlab"
@@ -577,3 +584,68 @@ func GetHTMLTitle(t testing.TB, session *TestSession, urlStr string) string {
 	doc := NewHTMLParser(t, resp.Body)
 	return doc.Find("head title").Text()
 }
+
+func CreateDeclarativeRepo(t *testing.T, owner *user_model.User, name string, enabledUnits, disabledUnits []unit_model.Type, files []*files_service.ChangeRepoFile) (*repo_model.Repository, string, func()) {
+	t.Helper()
+
+	repoName := name
+	if repoName == "" {
+		repoName = gouuid.NewString()
+	}
+
+	// Create a new repository
+	repo, err := repo_service.CreateRepository(db.DefaultContext, owner, owner, repo_service.CreateRepoOptions{
+		Name:          repoName,
+		Description:   "Temporary Repo",
+		AutoInit:      true,
+		Gitignores:    "",
+		License:       "WTFPL",
+		Readme:        "Default",
+		DefaultBranch: "main",
+	})
+	assert.NoError(t, err)
+	assert.NotEmpty(t, repo)
+
+	if enabledUnits != nil || disabledUnits != nil {
+		units := make([]repo_model.RepoUnit, len(enabledUnits))
+		for i, unitType := range enabledUnits {
+			units[i] = repo_model.RepoUnit{
+				RepoID: repo.ID,
+				Type:   unitType,
+			}
+		}
+
+		err := repo_model.UpdateRepositoryUnits(db.DefaultContext, repo, units, disabledUnits)
+		assert.NoError(t, err)
+	}
+
+	var sha string
+	if len(files) > 0 {
+		resp, err := files_service.ChangeRepoFiles(git.DefaultContext, repo, owner, &files_service.ChangeRepoFilesOptions{
+			Files:     files,
+			Message:   "add files",
+			OldBranch: "main",
+			NewBranch: "main",
+			Author: &files_service.IdentityOptions{
+				Name:  owner.Name,
+				Email: owner.Email,
+			},
+			Committer: &files_service.IdentityOptions{
+				Name:  owner.Name,
+				Email: owner.Email,
+			},
+			Dates: &files_service.CommitDateOptions{
+				Author:    time.Now(),
+				Committer: time.Now(),
+			},
+		})
+		assert.NoError(t, err)
+		assert.NotEmpty(t, resp)
+
+		sha = resp.Commit.SHA
+	}
+
+	return repo, sha, func() {
+		repo_service.DeleteRepository(db.DefaultContext, owner, repo, false)
+	}
+}