Add API Endpoint for Branch Creation (#11607)

* [FEATURE] [API] Add Endpoint for Branch Creation

Issue: https://github.com/go-gitea/gitea/issues/11376

This commit introduces an API endpoint for branch creation.

The added route is POST /repos/{owner}/{repo}/branches.
A JSON with the name of the new branch and the name of the old branch is
required as parameters.

Signed-off-by: Terence Le Huu Phuong <terence@qwasar.io>

* Put all the logic into CreateBranch and removed CreateRepoBranch

* - Added the error ErrBranchDoesNotExist in error.go
- Made the CreateNewBranch function return an errBranchDoesNotExist error
when the OldBranch does not exist
- Made the CreateBranch API function checks that the repository is not
empty and that branch exists.

* - Added a resetFixtures helper function in integration_test.go to
fine-tune test env resetting
- Added api test for CreateBranch
- Used resetFixture instead of the more general prepareTestEnv in the
repo_branch_test CreateBranch tests

* Moved the resetFixtures call inside the loop for APICreateBranch function

* Put the prepareTestEnv back in repo_branch_test

* fix import order/sort api branch test

Co-authored-by: zeripath <art27@cantab.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/integrations/integration_test.go b/integrations/integration_test.go
index c6a4169751..3c0125af6c 100644
--- a/integrations/integration_test.go
+++ b/integrations/integration_test.go
@@ -26,6 +26,7 @@ import (
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/graceful"
+	"code.gitea.io/gitea/modules/queue"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/routers"
 	"code.gitea.io/gitea/routers/routes"
@@ -459,3 +460,14 @@ func GetCSRF(t testing.TB, session *TestSession, urlStr string) string {
 	doc := NewHTMLParser(t, resp.Body)
 	return doc.GetCSRF()
 }
+
+// resetFixtures flushes queues, reloads fixtures and resets test repositories within a single test.
+// Most tests should call defer prepareTestEnv(t)() (or have onGiteaRun do that for them) but sometimes
+// within a single test this is required
+func resetFixtures(t *testing.T) {
+	assert.NoError(t, queue.GetManager().FlushAll(context.Background(), -1))
+	assert.NoError(t, models.LoadFixtures())
+	assert.NoError(t, os.RemoveAll(setting.RepoRootPath))
+	assert.NoError(t, com.CopyDir(path.Join(filepath.Dir(setting.AppPath), "integrations/gitea-repositories-meta"),
+		setting.RepoRootPath))
+}