Integrations.test is erroneously used as the hook in pre-receive.d of a forked repo in integration testing

[typeless]

• Gitea version (or commit ref):
  v1.1.0-289-g9ddc35e

• Git version:
  2.7.4

• Operating system:
  Ubuntu 16.04 64bit

• Database (use [x]):

  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite

• Can you reproduce the bug at https://try.gitea.io:

  • Yes (provide example URL)
  • No
  • Not relevant

• Log gist:

Description

Under the environment created by integrations.test, a forked repo will contain a hook which looks like the following:

cat /tmp/repo1.git/hooks/pre-receive.d/gitea
#!/usr/bin/env bash
"/home/mura/devel/go/src/code.gitea.io/gitea/integrations.test" hook --config='/home/mura/devel/go/src/code.gitea.io/gitea/integrations/sqlite.ini' pre-receive

For some clues I've found so far:
https://github.com/go-gitea/gitea/blob/master/models/repo.go#L946
https://github.com/go-gitea/gitea/blob/master/modules/setting/setting.go#L510
...

P.S. The problem can be reproduced with #1912

Screenshots

If this issue involves the Web Interface, please include a screenshot

[typeless]

Any thoughts?

The problem seems to be due to the limitation of the integration framework or the way that the hooks are handled. Neither are obvious to fix to me.